Go terms map to parent GO term: GO:0043234   protein complex
GOID
Link to GO
 Functional Category Description Protein Count
link to
protein list
GO:0005875 microtubule associated complex Any multimeric complex connected to a microtubule. 477
GO:0005667 transcription factor complex A protein complex, distinct from RNA polymerase, that associates with DNA at promoters or at cis-acting regulatory sequences, by direct binding or by interaction with other DNA-binding polypeptides or complexes, and regulates transcription. 178
GO:0005819 spindle The array of microtubules and associated molecules that forms between opposite poles of a eukaryotic cell during mitosis or meiosis and serves to move the duplicated chromosomes apart. 118
GO:0031941 filamentous actin A two-stranded helical polymer of the protein actin. 95
GO:0005874 microtubule Any of the long, generally straight, hollow tubes of internal diameter 12-15 nm and external diameter 24 nm found in a wide variety of eukaryotic cells; each consists (usually) of 13 protofilaments of polymeric tubulin, staggered in such a manner that the tubulin monomers are arranged in a helical pattern on the microtubular surface, and with the alpha/beta axes of the tubulin subunits parallel to the long axis of the tubule; exist in equilibrium with pool of tubulin monomers and can be rapidly assembled or disassembled in response to physiological stimuli; concerned with force generation, e.g. in the spindle. 93
GO:0005876 spindle microtubule Any microtubule that is part of a mitotic or meiotic spindle; anchored at one spindle pole. 79
GO:0005816 spindle pole body The microtubule organizing center in fungi; functionally homologous to the animal cell centrosome. 78
GO:0008180 signalosome A protein complex that catalyzes the deneddylation of proteins, including the cullin component of SCF ubiquitin E3 ligase; deneddylation increases the activity of cullin family ubiquitin ligases. The signalosome is involved in many regulatory process, including some which control development, in many species; also regulates photomorphogenesis in plants; in many species its subunits are highly similar to those of the proteasome. 77
GO:0031521 spitzenkorper Structure within the hyphal tip of filamentous fungi that acts as an organizing center for hyphal tip growth; may function to supply vesicles to the elongating tip and/or to organize cytoskeletal microfilaments. 67
GO:0000922 spindle pole Either of the ends of a spindle, where spindle microtubules are organized; usually contains a microtubule organizing center and accessory molecules, spindle microtubules and astral microtubules. 56
GO:0072686 mitotic spindle A spindle that forms as part of mitosis. Mitotic and meiotic spindles contain distinctive complements of proteins associated with microtubules. 56
GO:0000776 kinetochore A multisubunit complex that is located at the centromeric region of DNA and provides an attachment point for the spindle microtubules. 55
GO:0005881 cytoplasmic microtubule Any microtubule in the cytoplasm of a cell. 52
GO:0017053 transcriptional repressor complex A protein complex that possesses activity that prevents or downregulates transcription. 51
GO:0035371 microtubule plus end The growing (plus) end of a microtubule. In vitro, microtubules polymerize more quickly at the plus end than at the minus end. In vivo, microtubule growth occurs only at the plus end, and the plus end switches between periods of growth and shortening, a behavior known as dynamic instability. 50
GO:0000235 astral microtubule Any of the spindle microtubules that radiate in all directions from the spindle poles and are thought to contribute to the forces that separate the poles and position them in relation to the rest of the cell. 46
GO:0044732 mitotic spindle pole body The microtubule organizing center on a spindle that forms as part of mitosis; functionally homologous to the animal cell centrosome. 46
GO:0005882 intermediate filament A cytoskeletal structure that forms a distinct elongated structure, characteristically 10 nm in diameter, that occurs in the cytoplasm of eukaryotic cells. Intermediate filaments form a fibrous system, composed of chemically heterogeneous subunits and involved in mechanically integrating the various components of the cytoplasmic space. Intermediate filaments may be divided into five chemically distinct classes: Type I, acidic keratins; Type II, basic keratins; Type III, including desmin, vimentin and others; Type IV, neurofilaments and related filaments; and Type V, lamins. 43
GO:0005859 muscle myosin complex A filament of myosin found in a muscle cell of any type. 43
GO:0031011 Ino80 complex A multisubunit protein complex that contains the Ino80p ATPase; exhibits chromatin remodeling activity and 3' to 5' DNA helicase activity. 41
GO:0051233 spindle midzone The area in the center of the spindle where the spindle microtubules from opposite poles overlap. 39
GO:0016592 mediator complex A protein complex that interacts with the carboxy-terminal domain of the largest subunit of RNA polymerase II and plays an active role in transducing the signal from a transcription factor to the transcriptional machinery. The mediator complex is required for activation of transcription of most protein-coding genes, but can also act as a transcriptional corepressor. The Saccharomyces complex contains several identifiable subcomplexes: a head domain comprising Srb2, -4, and -5, Med6, -8, and -11, and Rox3 proteins; a middle domain comprising Med1, -4, and -7, Nut1 and -2, Cse2, Rgr1, Soh1, and Srb7 proteins; a tail consisting of Gal11p, Med2p, Pgd1p, and Sin4p; and a regulatory subcomplex comprising Ssn2, -3, and -8, and Srb8 proteins. Metazoan mediator complexes have similar modular structures and include homologs of yeast Srb and Med proteins. 38
GO:0005884 actin filament A filamentous structure formed of a two-stranded helical polymer of the protein actin and associated proteins. Actin filaments are a major component of the contractile apparatus of skeletal muscle and the microfilaments of the cytoskeleton of eukaryotic cells. The filaments, comprising polymerized globular actin molecules, appear as flexible structures with a diameter of 5-9 nm. They are organized into a variety of linear bundles, two-dimensional networks, and three dimensional gels. In the cytoskeleton they are most highly concentrated in the cortex of the cell just beneath the plasma membrane. 35
GO:0031477 myosin VII complex A myosin complex containing a dimer of class VII myosin heavy chains and associated light chains. Myosin VII (240 kDa) is predicted to be a dimeric molecule with 5 IQ motifs and a tail region with a short stretch of coiled coil followed by two myosin-tail homology (MyTH4) domains, two talin-binding (FERM) domains and an SH3-domain. 34
GO:0071339 MLL1 complex A protein complex that can methylate lysine-4 of histone H3. MLL1/MLL is the catalytic methyltransferase subunit, and the complex also contains the core components ASH2L, HCFC1/HCF1 WDR5 and RBBP5. 33
GO:0032982 myosin filament A protein complex containing myosin heavy chains, plus associated light chains and other proteins, in which the myosin heavy chains are arranged into a filament. 33
GO:0042642 actomyosin, myosin complex part The myosin part of any complex of actin, myosin, and accessory proteins. 32
GO:0005834 heterotrimeric G-protein complex Any of a family of heterotrimeric GTP-binding and hydrolyzing proteins; they belong to a superfamily of GTPases that includes monomeric proteins such as EF-Tu and RAS. Heterotrimeric G-proteins consist of three subunits; the alpha subunit contains the guanine nucleotide binding site and possesses GTPase activity; the beta and gamma subunits are tightly associated and function as a beta-gamma heterodimer; extrinsic plasma membrane proteins (cytoplasmic face) that function as a complex to transduce signals from G-protein coupled receptors to an effector protein. 32
GO:0000159 protein phosphatase type 2A complex A protein complex that has protein serine/threonine phosphatase activity that is polycation-stimulated (PCS), being directly stimulated by protamine, polylysine, or histone H1; it constitutes a subclass of several enzymes activated by different histones and polylysine, and consists of catalytic, scaffolding, and regulatory subunits. The catalytic and scaffolding subunits form the core enzyme, and the holoenzyme also includes the regulatory subunit. 31
GO:0035267 NuA4 histone acetyltransferase complex A complex having histone acetylase activity on chromatin, as well as ATPase, DNA helicase and structural DNA binding activities. The complex is thought to be involved in double-strand DNA break repair. Subunits of the human complex include HTATIP/TIP60, TRRAP, RUVBL1, BUVBL2, beta-actin and BAF53/ACTL6A. In yeast, the complex has 13 subunits, including the catalytic subunit Esa1 (homologous to human Tip60). 31
GO:0002199 zona pellucida receptor complex A multisubunit complex comprising the chaperonin-containing T-complex and several other components involved in mediating sperm-oocyte Interaction. 31
GO:0008540 proteasome regulatory particle, base subcomplex The subcomplex of the proteasome regulatory particle that directly associates with the proteasome core complex. 30
GO:0005747 mitochondrial respiratory chain complex I A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. It contains about 25 different polypeptide subunits, including NADH dehydrogenase (ubiquinone), flavin mononucleotide and several different iron-sulfur clusters containing non-heme iron. The iron undergoes oxidation-reduction between Fe(II) and Fe(III), and catalyzes proton translocation linked to the oxidation of NADH by ubiquinone. 29
GO:0000151 ubiquitin ligase complex A protein complex that includes a ubiquitin-protein ligase and other proteins that may confer substrate specificity on the complex. 29
GO:0034515 proteasome storage granule A multisubunit proteasome complex that localizes in the cytoplasm as dot-like structures when cells are in a quiescent state. 29
GO:0070688 MLL5-L complex A protein complex that can methylate lysine-4 of histone H3 and plays an essential role in retinoic-acid-induced granulopoiesis. MLL5 is the catalytic methyltransferase subunit, and the complex also contains serine/threonine kinase 38 (STK38), protein phosphatase 1 catalytic subunits, the host cell factor-1 N-terminal subunit, beta-actin, and O-GlcNAc transferase; the human genes encoding the subunits are MLL5, STK38, PPP1CA, PPP1CB, PPP1CC, HCFC1, ACTB and OGT, respectively. 29
GO:0000974 Prp19 complex A protein complex consisting of Prp19 and associated proteins that is involved in the transition from the precatalytic spliceosome to the activated form that catalyzes step 1 of splicing, and which remains associated with the spliceosome through the second catalytic step. It is widely conserved, found in both yeast and mammals, though the exact composition varies. In S. cerevisiae, it contains Prp19p, Ntc20p, Snt309p, Isy1p, Syf2p, Cwc2p, Prp46p, Clf1p, Cef1p, and Syf1p. 28
GO:0000778 condensed nuclear chromosome kinetochore A multisubunit complex that is located at the centromeric region of a condensed chromosome in the nucleus and provides an attachment point for the spindle microtubules. 27
GO:0031463 Cul3-RING ubiquitin ligase complex A ubiquitin ligase complex in which a cullin from the Cul3 subfamily and a RING domain protein form the catalytic core; substrate specificity is conferred by a BTB-domain-containing protein. 27
GO:0000502 proteasome complex A large multisubunit complex which catalyzes protein degradation. This complex consists of the barrel shaped proteasome core complex and one or two associated proteins or complexes that act in regulating entry into or exit from the core. 27
GO:0005643 nuclear pore Any of the numerous similar discrete openings in the nuclear envelope of a eukaryotic cell, where the inner and outer nuclear membranes are joined. 27
GO:0005847 mRNA cleavage and polyadenylation specificity factor complex A multisubunit complex that binds to the canonical AAUAAA hexamer and to U-rich upstream sequence elements on the pre-mRNA, thereby stimulating the otherwise weakly active and nonspecific polymerase to elongate efficiently RNAs containing a poly(A) signal. 26
GO:0005863 striated muscle myosin thick filament Bipolar filaments formed of polymers of a muscle-specific myosin II isoform, found in the middle of sarcomeres in myofibrils. 26
GO:0043235 receptor complex Any protein complex that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function. 25
GO:0005832 chaperonin-containing T-complex A multisubunit ring-shaped complex that mediates protein folding in the cytosol without a cofactor. 25
GO:0031298 replication fork protection complex A protein complex conserved in eukaryotes and associated with the replication fork; the complex stabilizes stalled replication forks and is thought to be involved in coordinating leading- and lagging-strand synthesis and in replication checkpoint signaling. 24
GO:0016514 SWI/SNF complex A SWI/SNF-type complex that contains nine or more proteins, including both conserved (core) and nonconserved components; the Swi2/Snf2 ATPase is one of the core components. 24
GO:0000812 Swr1 complex A multisubunit protein complex that is involved in chromatin remodeling. It is required for the incorporation of the histone variant H2AZ into chromatin. In S. cerevisiae, the complex contains Swr1p, a Swi2/Snf2-related ATPase, and 12 additional subunits. 24
GO:0005871 kinesin complex Any complex that includes a dimer of molecules from the kinesin superfamily, a group of related proteins that contain an extended region of predicted alpha-helical coiled coil in the main chain that likely produces dimerization. The native complexes of several kinesin family members have also been shown to contain additional peptides, often designated light chains as all of the noncatalytic subunits that are currently known are smaller than the chain that contains the motor unit. Kinesin complexes generally possess a force-generating enzymatic activity, or motor, which converts the free energy of the gamma phosphate bond of ATP into mechanical work. 24
GO:0005879 axonemal microtubule A microtubule in the axoneme of a cilium or flagellum; an axoneme contains nine modified doublet microtubules surrounding a pair of single microtubules. 23
GO:0008076 voltage-gated potassium channel complex A protein complex that forms a transmembrane channel through which potassium ions may cross a cell membrane in response to changes in membrane potential. 21
GO:0005868 cytoplasmic dynein complex Any dynein complex that catalyzes movement along a cytoplasmic microtubule; cytoplasmic dynein complexes participates in many transport activities in eukaryotes, such as mRNA localization, intermediate filament transport, nuclear envelope breakdown, apoptosis, transport of centrosomal proteins, mitotic spindle assembly, virus transport, kinetochore functions, and movement of signaling and spindle checkpoint proteins. Subunits associated with the dynein heavy chain mediate association between dynein heavy chain and cargoes,and may include light chains and light intermediate chains. 20
GO:0000118 histone deacetylase complex A protein complex that possesses histone deacetylase activity. 20
GO:0035098 ESC/E(Z) complex A multimeric protein complex that can methylate lysine-27 and lysine-9 residues of histone H3. In Drosophila the core subunits of the complex include ESC, E(Z), CAF1 (NURF-55) and SU(Z)12. In mammals the core subunits of the complex include EED, EZH2, SUZ12 and RBBP4. 20
GO:0031201 SNARE complex A protein complex involved in membrane fusion; a stable ternary complex consisting of a four-helix bundle, usually formed from one R-SNARE and three Q-SNAREs with an ionic layer sandwiched between hydrophobic layers. One well-characterized example is the neuronal SNARE complex formed of synaptobrevin 2, syntaxin 1a, and SNAP-25. 20
GO:0005665 DNA-directed RNA polymerase II, core complex RNA polymerase II, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces mRNAs, snoRNAs, and some of the snRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The largest subunit of RNA polymerase II contains an essential carboxyl-terminal domain (CTD) composed of a variable number of heptapeptide repeats (YSPTSPS). The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerases I and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template. 20
GO:0033503 HULC complex A ubiquitin-conjugating enzyme complex that contains two RING finger proteins, which have ubiquitin ligase activity, in addition to a protein with ubiquitin-conjugating enzyme activity; catalyzes the ubiquitination of histone H2B at lysine 119 (or the equivalent residue). In Schizosaccharomyces the subunits are Rhp1, Brl2/Rfp1 and Brl1/Rfp2. 20
GO:0030126 COPI vesicle coat One of two multimeric complexes that forms a membrane vesicle coat. The mammalian COPI subunits are called alpha-, beta-, beta'-, gamma-, delta-, epsilon- and zeta-COP. Vesicles with COPI coats are found associated with Golgi membranes at steady state. 19
GO:0045298 tubulin complex A heterodimer of tubulins alpha and beta that constitutes the protomer for microtubule assembly. 19
GO:0000164 protein phosphatase type 1 complex A protein complex that possesses magnesium-dependent protein serine/threonine phosphatase (AMD phosphatase) activity, and consists of a catalytic subunit and one or more regulatory subunits that dictates the phosphatase's substrate specificity, function, and activity. 19
GO:0005852 eukaryotic translation initiation factor 3 complex A complex of several polypeptides that plays at least two important roles in protein synthesis: First, eIF3 binds to the 40S ribosome and facilitates loading of the Met-tRNA/eIF2.GTP ternary complex to form the 43S preinitiation complex. Subsequently, eIF3 apparently assists eIF4 in recruiting mRNAs to the 43S complex. The eIF3 complex contains five conserved core subunits, and may contain several additional proteins; the non-core subunits are thought to mediate association of the complex with specific sets of mRNAs. 18
GO:0034704 calcium channel complex An ion channel complex through which calcium ions pass. 18
GO:0016581 NuRD complex An approximately 2 MDa multi-subunit complex that exhibits ATP-dependent chromatin remodeling activity in addition to histone deacetylase (HDAC) activity, and has been shown to establish transcriptional repression of a number of target genes in vertebrates, invertebrates and fungi. Amongst its subunits, the NuRD complex contains histone deacetylases, histone binding proteins and Mi-2-like proteins. 18
GO:0000145 exocyst A protein complex peripherally associated with the plasma membrane that determines where vesicles dock and fuse. At least eight complex components are conserved between yeast and mammals. 18
GO:0034967 Set3 complex A histone deacetylase complex that is involved in transcriptional regulation. In S. cerevisiae, this complex consists of Set3p, Snt1p, Hos4p, Sif2p, Cpr1p, Hos2p, and Hst1p. 17
GO:0072357 PTW/PP1 phosphatase complex A protein serine/threonine phosphatase complex that contains a catalytic subunit (PPP1CA, PPP1CB or PPP1CC) and the regulatory subunits PPP1R10 (PNUTS), TOX4 and WDR82, and plays a role in the control of chromatin structure and cell cycle progression during the transition from mitosis into interphase. 17
GO:0030289 protein phosphatase 4 complex The complex formed by the catalytic subunit of protein phosphatase 4 plus a regulatory subunit. 16
GO:0048188 Set1C/COMPASS complex A conserved protein complex that catalyzes methylation of histone H3. In Saccharomyces the complex contains Shg1p, Sdc1p, Swd1p, Swd2p, Swd3p, Spp1p, Bre2p, and the trithorax-related Set1p; in mammals it contains the catalytic subunit (SETD1A or SETD1B), WDR5, WDR82, RBBP5, ASH2L/ASH2, CXXC1/CFP1, HCFC1 and DPY30. 16
GO:0034663 endoplasmic reticulum chaperone complex A protein complex that is located in the endoplasmic reticulum and is composed of chaperone proteins, including BiP, GRP94; CaBP1, protein disulfide isomerase (PDI), ERdj3, cyclophilin B, ERp72, GRP170, UDP-glucosyltransferase, and SDF2-L1. 16
GO:0072380 TRC complex An ER membrane insertion complex that contains subunits that recognize two types of transmembrane domain signals. In budding yeast the complex contains Get4p, Get5p, Sgt2p, and at least two heat shock proteins (HSPs). 16
GO:0008305 integrin complex A protein complex that is composed of one alpha subunit and one beta subunit, both of which are members of the integrin superfamily of cell adhesion receptors; the complex spans the plasma membrane and binds to extracellular matrix ligands, cell-surface ligands, and soluble ligands. 16
GO:0036128 CatSper complex A sperm-specific voltage-gated calcium channel that controls the intracellular calcium ion concentration and, thereby, the swimming behavior of sperm. Consists of a heteromeric tetramer surrounding a calcium ion- selective pore. May also contain additional auxiliary subunits. 16
GO:0034099 luminal surveillance complex A multiprotein complex that recognizes ERAD-luminal misfolded substrates and brings them to the ubiquitination/extraction machinery. In yeast, this complex consists of Yos9p, Kar2p and Hrd3p proteins. 16
GO:0005669 transcription factor TFIID complex A complex composed of TATA binding protein (TBP) and TBP associated factors (TAFs); the total mass is typically about 800 kDa. Most of the TAFs are conserved across species. In TATA-containing promoters for RNA polymerase II (Pol II), TFIID is believed to recognize at least two distinct elements, the TATA element and a downstream promoter element. TFIID is also involved in recognition of TATA-less Pol II promoters. Binding of TFIID to DNA is necessary but not sufficient for transcription initiation from most RNA polymerase II promoters. 16
GO:0033181 plasma membrane proton-transporting V-type ATPase complex A proton-transporting two-sector ATPase complex found in the plasma membrane. 16
GO:0016460 myosin II complex A myosin complex containing two class II myosin heavy chains, two myosin essential light chains and two myosin regulatory light chains. Also known as classical myosin or conventional myosin, the myosin II class includes the major muscle myosin of vertebrate and invertebrate muscle, and is characterized by alpha-helical coiled coil tails that self assemble to form a variety of filament structures. 15
GO:0019005 SCF ubiquitin ligase complex A ubiquitin ligase complex in which a cullin from the Cul1 subfamily and a RING domain protein form the catalytic core; substrate specificity is conferred by a Skp1 adaptor and an F-box protein. SCF complexes are involved in targeting proteins for degradation by the proteasome. The best characterized complexes are those from yeast and mammals (with core subunits named Cdc53/Cul1, Rbx1/Hrt1/Roc1). 15
GO:0005892 acetylcholine-gated channel complex A homo- or hetero-pentameric protein complex that forms a transmembrane channel through which ions may pass in response to acetylcholine binding. 15
GO:0005827 polar microtubule Any of the spindle microtubules that come from each pole and overlap at the spindle midzone. This interdigitating structure consisting of antiparallel microtubules is responsible for pushing the poles of the spindle apart. 15
GO:0005828 kinetochore microtubule Any of the spindle microtubules that attach to the kinetochores of chromosomes by their plus ends, and maneuver the chromosomes during mitotic or meiotic chromosome segregation. 15
GO:0005891 voltage-gated calcium channel complex A protein complex that forms a transmembrane channel through which calcium ions may pass in response to changes in membrane potential. 15
GO:0001405 presequence translocase-associated import motor Protein complex located on the matrix side of the mitochondrial inner membrane and associated with the presequence translocase complex; hydrolyzes ATP to provide the force to drive import of proteins into the mitochondrial matrix. 15
GO:0005753 mitochondrial proton-transporting ATP synthase complex A proton-transporting ATP synthase complex found in the mitochondrial membrane. 14
GO:0016589 NURF complex An ISWI complex that contains an ATPase subunit of the ISWI family (SNF2L in mammals), a NURF301 homolog (BPTF in humans), and additional subunits, though the composition of these additional subunits varies slightly with species. NURF is involved in regulation of transcription from TRNA polymerase II promoters. 14
GO:0016459 myosin complex A protein complex, formed of one or more myosin heavy chains plus associated light chains and other proteins, that functions as a molecular motor; uses the energy of ATP hydrolysis to move actin filaments or to move vesicles or other cargo on fixed actin filaments; has magnesium-ATPase activity and binds actin. Myosin classes are distinguished based on sequence features of the motor, or head, domain, but also have distinct tail regions that are believed to bind specific cargoes. 14
GO:0000307 cyclin-dependent protein kinase holoenzyme complex Cyclin-dependent protein kinases (CDKs) are heterodimeric enzymes that contain a kinase catalytic subunit associated with a regulatory cyclin partner. 14
GO:0031519 PcG protein complex A chromatin-associated multiprotein complex containing Polycomb Group proteins. In Drosophila, Polycomb group proteins are involved in the long-term maintenance of gene repression, and PcG protein complexes associate with Polycomb group response elements (PREs) in target genes to regulate higher-order chromatin structure. 14
GO:0005671 Ada2/Gcn5/Ada3 transcription activator complex A multiprotein complex that possesses histone acetyltransferase and is involved in regulation of transcription. Contains either GCN5 or PCAF in a mutually exclusive manner. The budding yeast complex includes Gcn5p, two proteins of the Ada family, and two TBP-associate proteins (TAFs); analogous complexes in other species have analogous compositions, and usually contain homologs of the yeast proteins. Both ATAC- or SAGA (see GO:0000124, SAGA complex) are involved in the acetylation of histone H3K9 and K14 residues. 14
GO:0005845 mRNA cap binding complex Any protein complex that binds to an mRNA cap at any time in the lifetime of the mRNA. 14
GO:0071817 MMXD complex A protein complex that contains the proteins MMS19, MIP18 and XPD, localizes to mitotic spindle during mitosis, and is required for proper chromosome segregation. 14
GO:0005869 dynactin complex A 20S multiprotein assembly of total mass about 1.2 MDa that activates dynein-based activity in vivo. A large structural component of the complex is an actin-like 40 nm filament composed of actin-related protein, to which other components attach. 13
GO:0080008 Cul4-RING ubiquitin ligase complex A ubiquitin ligase complex in which a cullin from the Cul4 family and a RING domain protein form the catalytic core; substrate specificity is conferred by an adaptor protein. 13
GO:0019773 proteasome core complex, alpha-subunit complex The proteasome core subcomplex that constitutes the two outer rings of the proteasome core complex. An example of this component is found in Mus musculus. 13
GO:0035060 brahma complex A SWI/SNF-type complex that contains the ATPase product of the Drosophila brahma gene, or an ortholog thereof. 13
GO:0071565 nBAF complex A SWI/SNF-type complex that is found in post-mitotic neurons, and in human contains actin and proteins encoded by the ARID1A/BAF250A or ARID1B/BAF250B, SMARCD1/BAF60A, SMARCD3/BAF60C, SMARCA2/BRM/BAF190B, SMARCA4/BRG1/BAF190A, SMARCB1/BAF47, SMARCC1/BAF155, SMARCE1/BAF57, SMARCC2/BAF170, DPF1/BAF45B, DPF3/BAF45C, ACTL6B/BAF53B genes. The nBAF complex along with CREST plays a role regulating the activity of genes essential for dendrite growth. 13
GO:0019774 proteasome core complex, beta-subunit complex The proteasome core subcomplex that constitutes the two inner rings of the proteasome core complex. An example of this component is found in Mus musculus. 12
GO:0005680 anaphase-promoting complex A ubiquitin ligase complex that degrades mitotic cyclins and anaphase inhibitory protein, thereby triggering sister chromatid separation and exit from mitosis. Substrate recognition by APC occurs through degradation signals, the most common of which is termed the Dbox degradation motif, originally discovered in cyclin B. 12
GO:0000124 SAGA complex A SAGA-type histone acetyltransferase complex that contains Spt8 (in budding yeast) or a homolog thereof; additional polypeptides include Spt group, consisting of Spt7, Spt3, and Spt20/Ada5, which interact with the TATA-binding protein (TBP); the Ada group, consisting of Ada1, Ada2, Ada3, Ada4/Gcn5, and Ada5/Spt20, which is functionally linked to the nucleosomal HAT activity; Tra1, an ATM/PI-3 kinase-related protein that targets DNA-bound activators for recruitment to promoters; the TBP-associated factor (TAF) proteins, consisting of Taf5, Taf6, Taf9, Taf10, and Taf12, which mediate nucleosomal HAT activity and are thought to help recruit the basal transcription machinery. 12
GO:0005885 Arp2/3 protein complex A stable protein complex that contains two actin-related proteins, Arp2 and Arp3, and five novel proteins (ARPC1-5), and functions in the nucleation of branched actin filaments. 12
GO:0005675 holo TFIIH complex A complex that contains kinase activity directed towards the C-terminal Domain (CTD) of the largest subunit of RNA polymerase II and is essential for initiation at RNA polymerase II promoters in vitro. In S. cerevisiae, it is composed of the 5-subunit core (Rad3p, Tfb1p, Tfb2p, Ssl1p and Tfb4p), Ssl2p, and TFIIK (Kin28p, Ccl1p, and Tfb3p). All of the subunits have equivalents in humans: the 5 subunit core is composed of ERCC2, p62, p55, p44, p34; the equivalent of the TFIIK subcomplex is composed of MO15, Mat1, and a cyclin; the human equivalent of Ssl2p is XPB. 12
GO:0035145 exon-exon junction complex A multi-subunit complex deposited by the spliceosome upstream of messenger RNA exon-exon junctions. The exon-exon junction complex provides a binding platform for factors involved in mRNA export and nonsense-mediated mRNA decay. 12
GO:0005880 nuclear microtubule Any microtubule in the nucleus of a cell. 11
GO:0000176 nuclear exosome (RNase complex) Complex of 3'-5' exoribonucleases found in the nucleus. 11
GO:0044666 MLL3/4 complex A protein complex that can methylate lysine-4 of histone H3, and which contains either of the protein subunits MLL3 or MLL4 in mammals, or equivalent in other species. 11
GO:0000220 vacuolar proton-transporting V-type ATPase, V0 domain The V0 domain of a proton-transporting V-type ATPase found in the vacuolar membrane. 11
GO:0016533 cyclin-dependent protein kinase 5 holoenzyme complex A protein complex that activates cyclin-dependent kinase 5; composed of regulatory and catalytic subunits. 11
GO:0000123 histone acetyltransferase complex A protein complex that possesses histone acetyltransferase activity. 11
GO:0016461 unconventional myosin complex A portmanteau term for myosins other than myosin II. 11
GO:0033276 transcription factor TFTC complex A protein complex that does not contain either a TATA-binding protein (TBP) or a TBP-like factor, but is composed of several TAFIIs and other proteins, including a histone acetyltransferase. This complex is able to nucleate transcription initiation by RNA polymerase II, can mediate transcriptional activation, and has histone acetyltransferase activity. 10
GO:0030008 TRAPP complex A large complex that acts as a tethering factor involved in transporting vesicles from the ER through the Golgi to the plasma membrane. A TRAPP (transport protein particle) complex has a core set of proteins which are joined by specific subunits depending on the cellular component where a given TRAPP complex is active. 10
GO:0000177 cytoplasmic exosome (RNase complex) Complex of 3'-5' exoribonucleases found in the cytoplasm. 10
GO:0005861 troponin complex A complex of accessory proteins (typically troponin T, troponin I and troponin C) found associated with actin in muscle thin filaments; involved in calcium regulation of muscle contraction. 10
GO:0000815 ESCRT III complex An endosomal sorting complex required for transport. Consists of two soluble subcomplexes of highly charged coiled-coil proteins and is required for sorting and/or concentration of multivesicular body (MVB) cargoes. 10
GO:0032045 guanyl-nucleotide exchange factor complex A protein complex that stimulates the exchange of guanyl nucleotides associated with a GTPase. 10
GO:0000939 condensed chromosome inner kinetochore The region of a condensed chromosome kinetochore closest to centromeric DNA; in mammals the CREST antigens (CENP proteins) are found in this layer; this layer may help define underlying centromeric chromatin structure and position of the kinetochore on the chromosome. 10
GO:0005890 sodium:potassium-exchanging ATPase complex Sodium:potassium-exchanging ATPases are tetrameric proteins, consisting of two large alpha subunits and two smaller beta subunits. The alpha subunits bear the active site and penetrate the membrane, while the beta subunits carry oligosaccharide groups and face the cell exterior. 10
GO:0034464 BBSome A protein complex that associates with the primary cilium and is involved in cilium biogenesis; consists of seven conserved proteins: BBS1, BBS2, BBS4, BBS5, BBS7, BBS8 and BBS9. 10
GO:0005954 calcium- and calmodulin-dependent protein kinase complex An enzyme complex which in eukaryotes is composed of four different chains: alpha, beta, gamma, and delta. The different isoforms assemble into homo- or heteromultimeric holoenzymes composed of 8 to 12 subunits. Catalyzes the phosphorylation of proteins to O-phosphoproteins. 10
GO:0070776 MOZ/MORF histone acetyltransferase complex A histone acetyltransferase complex that has histone H3 acetyltransferase and coactivator activities. Subunits of the human complex include MYST3/MOZ, MYST4/MORF, ING5, EAF6 and one of BRPF1, BRD1/BRPF2 and BRPF3. 10
GO:0005823 central plaque of spindle pole body One of three laminate structures that form the spindle pole body; the central plaque is embedded in the nuclear envelope. 10
GO:0030122 AP-2 adaptor complex A heterotetrameric AP-type membrane coat adaptor complex that consists of alpha, beta2, mu2 and sigma2 subunits, and links clathrin to the membrane surface of a vesicle; vesicles with AP-2-containing coats are normally found primarily near the plasma membrane, on endocytic vesicles. In at least humans, the AP-2 complex can be heterogeneric due to the existence of multiple subunit isoforms encoded by different alpha genes (alphaA and alphaC). 10
GO:0017146 N-methyl-D-aspartate selective glutamate receptor complex An assembly of four or five subunits which form a structure with an extracellular N-terminus and a large loop that together form the ligand binding domain. The C-terminus is intracellular. The ionotropic glutamate receptor complex itself acts as a ligand gated ion channel; on binding glutamate, charged ions pass through a channel in the center of the receptor complex. NMDA receptors are composed of assemblies of NR1 subunits (Figure 3) and NR2 subunits, which can be one of four separate gene products (NR2A-D). Expression of both subunits are required to form functional channels. The glutamate binding domain is formed at the junction of NR1 and NR2 subunits. NMDA receptors are permeable to calcium ions as well as being permeable to other ions. Thus NMDA receptor activation leads to a calcium influx into the post-synaptic cells, a signal thought to be crucial for the induction of NMDA-receptor dependent LTP and LTD. 10
GO:0008250 oligosaccharyltransferase complex A protein complex that is found in the endoplasmic reticulum membrane of eukaryotes and transfers lipid-linked oligosaccharide precursor to asparagine residues on nascent proteins. In yeast, the complex includes at least nine different subunits, whereas in mammalian cells at least three different forms of the complex have been detected. 10
GO:0043190 ATP-binding cassette (ABC) transporter complex A complex for the transport of metabolites into and out of the cell, typically comprised of four domains; two membrane-associated domains and two ATP-binding domains at the intracellular face of the membrane, that form a central pore through the plasma membrane. Each of the four core domains may be encoded as a separate polypeptide or the domains can be fused in any one of a number of ways into multidomain polypeptides. In Bacteria and Archaebacteria, ABC transporters also include substrate binding proteins to bind substrate external to the cytoplasm and deliver it to the transporter. 9
GO:0035370 UBC13-UEV1A complex A heterodimeric ubiquitin conjugating enzyme complex that catalyzes assembly of K63-linked polyubiquitin chains and is involved in NF-kappaB activation. In humans at least, the complex comprises the ubiquitin-conjugating enzyme UBC13 and ubiquitin-conjugating enzyme variant 1A (UEV1A). 9
GO:0071564 npBAF complex A SWI/SNF-type complex that is found in neural stem or progenitor cells, and in human contains actin and proteins encoded by the ARID1A/BAF250A or ARID1B/BAF250B, SMARCD1/BAF60A, SMARCD3/BAF60C, SMARCA2/BRM/BAF190B, SMARCA4/BRG1/BAF190A, SMARCB1/BAF47, SMARCC1/BAF155, SMARCE1/BAF57, SMARCC2/BAF170, PHF10/BAF45A, ACTL6A/BAF53A genes. The npBAF complex is essential for the self-renewal/proliferative capacity of the multipotent neural stem cells. 9
GO:0042643 actomyosin, actin part The actin part of any complex of actin, myosin, and accessory proteins. 9
GO:0031523 Myb complex A multisubunit complex consisting of Myb and other proteins that regulates site specific DNA replication, gene amplification and transcriptional repression. 9
GO:0017101 aminoacyl-tRNA synthetase multienzyme complex A multienzyme complex found in all multicellular eukaryotes composed of eight proteins with aminoacyl-tRNA synthetase activities (abbreviated as: ArgRS, AspRS, GluProRS, GlnRS, IleRS, LeuRS, LysRS, MetRS where RS is the enzyme, preceded by the amino acid it uses as a substrate) as well as three non-synthetase proteins (p43, p38, and p18) with diverse functions. Several of these subunits are known dimers, so the total polypeptide count in the multisynthetase complex is at least fifteen. All of the enzymes in this assembly catalyze the same reaction, the covalent attachment of an amino acid to either the 2'- or 3'-hydroxyl of the 3'-terminal adenosine of tRNA, but using different substrates. 9
GO:0005750 mitochondrial respiratory chain complex III A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1. 9
GO:0045262 plasma membrane proton-transporting ATP synthase complex, catalytic core F(1) The catalytic sector of the plasma membrane hydrogen-transporting ATP synthase; it comprises the catalytic core and central stalk, and is peripherally associated with the plasma membrane when the entire ATP synthase is assembled. Examples of this component are found in Bacterial species. 9
GO:0005744 mitochondrial inner membrane presequence translocase complex The protein transport machinery of the mitochondrial inner membrane that contains three essential Tim proteins: Tim17 and Tim23 are thought to build a preprotein translocation channel while Tim44 interacts transiently with the matrix heat-shock protein Hsp70 to form an ATP-driven import motor. 9
GO:0045160 myosin I complex A myosin complex containing a class I myosin heavy chain and associated light chains; myosin I heavy chains are single-headed, possess tails of various lengths, and do not self-associate into bipolar filaments; myosin I complexes are involved in diverse processes related to membrane traffic and cell movement. 9
GO:0031372 UBC13-MMS2 complex A heterodimeric ubiquitin conjugating enzyme complex that catalyzes assembly of K63-linked polyubiquitin chains, which act as a signal to promote error-free DNA postreplication repair; in Saccharomyces the complex comprises Ubc13p and Mms2p. 9
GO:0002102 podosome An actin-rich adhesion structure characterized by formation upon cell substrate contact and localization at the substrate-attached part of the cell, contain an F-actin-rich core surrounded by a ring structure containing proteins such as vinculin and talin, and have a diameter of 0.5 mm. 9
GO:0008541 proteasome regulatory particle, lid subcomplex The subcomplex of the proteasome regulatory particle that forms the peripheral lid, which is added on top of the base subcomplex. 9
GO:0010005 cortical microtubule, transverse to long axis Arrays of microtubules underlying and connected to the plasma membrane, in the cortical cytosol, oriented mainly with their axes transverse to the long axis of the cell (and root in plants). In plants it influences the direction of cellulose microfibril deposition. 9
GO:0035102 PRC1 complex An insect multiprotein complex containing the products of many of the Polycomb Group genes including Polycomb, Posterior sex combs, polyhomeotic and Sex comb on midleg. The Polycomb Group proteins are required for stable long-term maintenance of transcriptionally repressed states and the PRC1 complex directly antagonizes ATP-dependent remodeling of nucleosomal arrays. 8
GO:0030014 CCR4-NOT complex The evolutionarily conserved CCR4-NOT complex is involved in several aspects of mRNA metabolism, including repression and activation of mRNA initiation, control of mRNA elongation, and the deadenylation and subsequent degradation of mRNA. In Saccharomyces the CCR4-NOT complex comprises a core complex of 9 proteins (Ccr4p, Caf1p, Caf40p, Caf130p, Not1p, Not2p, Not3p, Not4p, and Not5p), Caf4p, Caf16p, and several less well characterized proteins. 8
GO:0071942 XPC complex A nucleotide-excision repair complex that is involved in damage sensing during global genome nucleotide excision repair (GG-NER). It is part of the pre-incision (or initial recognition) complex bound to sites of DNA damage. In human, it is composed of XPC, RAD23B and CETN2. 8
GO:0042555 MCM complex A hexameric protein complex required for the initiation and regulation of DNA replication. 8
GO:0031595 nuclear proteasome complex A proteasome found in the nucleus of a cell. 8
GO:0030286 dynein complex Any of several large complexes that contain two or three dynein heavy chains and several light chains, and have microtubule motor activity. 8
GO:0032281 alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid selective glutamate receptor complex An assembly of four or five subunits which form a structure with an extracellular N-terminus and a large loop that together form the ligand binding domain. The C-terminus is intracellular. The ionotropic glutamate receptor complex itself acts as a ligand gated ion channel; on binding glutamate, charged ions pass through a channel in the center of the receptor complex. The AMPA receptors mediate fast synaptic transmission in the CNS and are composed of subunits GluR1-4, products from separate genes. These subunits have an extracellular N-terminus and an intracellular C-terminus. 8
GO:0008328 ionotropic glutamate receptor complex A multimeric assembly of four or five subunits which form a structure with an extracellular N-terminus and a large loop that together form the ligand binding domain. The C-terminus is intracellular. The ionotropic glutamate receptor complex itself acts as a ligand-gated ion channel; on binding glutamate, charged ions pass through a channel in the center of the receptor complex. 8
GO:0031476 myosin VI complex A myosin complex containing one or more class VI myosin heavy chains and associated light chains. Myosin VI has a single IQ motif in the neck and a tail region with a coiled coil domain followed by a unique globular domain; a unique insertion that enables myosin VI to move towards the pointed or minus end of actin filaments. 8
GO:0030314 junctional membrane complex Complex formed in muscle cells between the membrane of the sarcoplasmic reticulum and invaginations of the plasma membrane (T-tubules). 8
GO:0016591 DNA-directed RNA polymerase II, holoenzyme Large protein complex composed of the RNA polymerase core complex and a variety of other proteins including transcription factor complexes TFIIA, D, E, F, and H which are required for promoter recognition, and the Mediator subcomplex. Catalyzes the synthesis of eukaryotic pre-mRNA. 8
GO:0000777 condensed chromosome kinetochore A multisubunit complex that is located at the centromeric region of a condensed chromosome and provides an attachment point for the spindle microtubules. 8
GO:0032806 carboxy-terminal domain protein kinase complex A protein complex that phosphorylates amino acid residues of RNA polymerase II C-terminal domain repeats; phosphorylation occurs mainly on Ser2 and Ser5. 8
GO:0030117 membrane coat Any of several different proteinaceous coats that can associate with membranes. Membrane coats include those formed by clathrin plus an adaptor complex, the COPI and COPII complexes, and possibly others. They are found associated with membranes on many vesicles as well as other membrane features such as pits and perhaps tubules. 8
GO:0000275 mitochondrial proton-transporting ATP synthase complex, catalytic core F(1) The catalytic sector of the mitochondrial hydrogen-transporting ATP synthase; it comprises the catalytic core and central stalk, and is peripherally associated with the mitochondrial inner membrane when the entire ATP synthase is assembled. 8
GO:0017133 mitochondrial electron transfer flavoprotein complex A protein complex located in the mitochondrion. It contains flavin adenine dinucleotide (FAD) that, together with an acyl-CoA dehydrogenase, forms a system that oxidizes an acyl-CoA molecule and reduces ubiquinone and other acceptors in the mitochondrial electron transport system. 8
GO:0016281 eukaryotic translation initiation factor 4F complex The eukaryotic translation initiation factor 4F complex is composed of eIF4E, eIF4A and eIF4G; it is involved in the recognition of the mRNA cap, ATP-dependent unwinding of the 5'-terminal secondary structure and recruitment of the mRNA to the ribosome. 8
GO:0031462 Cul2-RING ubiquitin ligase complex A ubiquitin ligase complex in which a cullin from the Cul2 subfamily and a RING domain protein form the catalytic core; substrate specificity is conferred by an elongin-BC adaptor and a SOCS/BC box protein. 8
GO:0031475 myosin V complex A myosin complex containing a dimer of class V myosin heavy chains and associated light chains; involved in intracellular transport. Myosin V is a dimeric molecule consisting of conserved motor domains followed by 6 IQ motifs which bind specific light chains and calmodulin. The tail domain is important for cellular localization and cargo binding and can be divided into an alpha-helical coiled coil region and a C-terminal globular region. 8
GO:0005952 cAMP-dependent protein kinase complex An enzyme complex, composed of regulatory and catalytic subunits, that catalyzes protein phosphorylation. Inactive forms of the enzyme have two regulatory chains and two catalytic chains; activation by cAMP produces two active catalytic monomers and a regulatory dimer. 8
GO:0022624 proteasome accessory complex A protein complex, that caps one or both ends of the proteasome core complex and regulates entry into, or exit from, the proteasome core complex. 8
GO:0016580 Sin3 complex A multiprotein complex that functions broadly in eukaryotic organisms as a transcriptional repressor of protein-coding genes, through the gene-specific deacetylation of histones. Amongst its subunits, the Sin3 complex contains Sin3-like proteins, and a number of core proteins that are shared with the NuRD complex (including histone deacetylases and histone binding proteins). The Sin3 complex does not directly bind DNA itself, but is targeted to specific genes through protein-protein interactions with DNA-binding proteins. 8
GO:0005818 aster An array of microtubules emanating from a spindle pole MTOC that do not connect to kinetochores. 8
GO:0031083 BLOC-1 complex A protein complex required for the biogenesis of specialized organelles of the endosomal-lysosomal system, such as melanosomes and platelet dense granules. Many of the protein subunits are conserved between mouse and human; the mouse complex contains the Pallidin, Muted, Cappuccino, Dysbindin, Snapin, BLOS1, BLOS2, AND BLOS3 proteins. 8
GO:0097361 CIA complex The cytosolic iron-sulfur protein assembly (CIA) complex mediates the incorporation of iron-sulfur clusters into apoproteins involved in DNA metabolism and genomic integrity. 7
GO:0005677 chromatin silencing complex Any protein complex that mediates changes in chromatin structure that result in transcriptional silencing. 7
GO:0030123 AP-3 adaptor complex A heterotetrameric AP-type membrane coat adaptor complex that consists of beta3, delta, mu3 and sigma3 subunits and is found associated with endosomal membranes. AP-3 does not appear to associate with clathrin in all organisms. In at least humans, the AP-3 complex can be heterogeneric due to the existence of multiple subunit isoforms encoded by different genes (beta3A and beta3B, mu3A and mu3B, and sigma3A and sigma3B). 7
GO:0016586 RSC complex A protein complex similar to, but more abundant than, the Swi/Snf complex. The RSC complex is generally recruited to RNA polymerase III promoters and is specifically recruited to RNA polymerase II promoters by transcriptional activators and repressors; it is also involved in non-homologous end joining. 7
GO:0032039 integrator complex A protein complex that stably associates with the C-terminus of RNA polymerase II and mediates 3'-end processing of small nuclear RNAs generated by RNA polymerase II. 7
GO:0034098 Cdc48p-Npl4p-Ufd1p AAA ATPase complex A multiprotein ATPase complex required for the efficient dislocation of ER-lumenal degradation substrates, and their subsequent proteolysis by the proteasome. In budding yeast, this complex includes Cdc48p, Npl4p and Ufd1p proteins. 7
GO:0030127 COPII vesicle coat One of two multimeric complexes that forms a membrane vesicle coat. COPII is best characterized in S. cerevisiae, where the subunits are called Sar1p, Sec13p, Sec31p, Sec23p, and Sec24p. Vesicles with COPII coats are found associated with endoplasmic reticulum (ER) membranes at steady state. 7
GO:0000930 gamma-tubulin complex A multiprotein complex composed of gamma-tubulin and other non-tubulin proteins. Gamma-tubulin complexes are localized to microtubule organizing centers, and play an important role in the nucleation of microtubules. The number and complexity of non-tubulin proteins associated with these complexes varies between species. 7
GO:0035101 FACT complex An abundant nuclear complex, which was originally identified in mammalian systems as a factor required for transcription elongation on chromatin templates. The FACT complex has been shown to destablilize the interaction between the H2A/H2B dimer and the H3/H4 tetramer of the nucleosome, thus reorganizing the structure of the nucleosome. In this way, the FACT complex may play a role in DNA replication and other processes that traverse the chromatin, as well as in transcription elongation. FACT is composed of two proteins that are evolutionarily conserved in all eukaryotes and homologous to mammalian Spt16 and SSRP1. In metazoans, the SSRP1 homolog contains an HMG domain; however in fungi and protists, it does not. For example, in S. cerevisiae the Pob3 protein is homologous to SSRP1, but lacks the HMG chromatin binding domain. Instead, the yFACT complex of Spt16p and Pob3p, binds to nucleosomes where multiple copies of the HMG-domain containing protein Nhp6p have already bound, but Nhp6p does not form a stable complex with the Spt16p/Pob3p heterodimer. 7
GO:0016027 inaD signaling complex A complex of proteins that are involved in phototransduction and attached to the transient receptor potential (TRP) channel. The protein connections are mediated through inaD. 7
GO:0031932 TORC2 complex A protein complex that contains at least TOR (target of rapamycin) and Rictor (rapamycin-insensitive companion of TOR), or orthologs of, in complex with other signaling components. Mediates the phosphorylation and activation of PKB (also called AKT). In Saccharomyces, the complex contains Avo1p, Avo2p, Tsc11p, Lst8p, Bit61p, Slm1p, Slm2p, and Tor2p. 7
GO:0032133 chromosome passenger complex A eukaryotically conserved protein complex that localizes to kinetochores in early mitosis, the spindle mid-zone in anaphase B and to the telophase midbody. It has been proposed that the passenger complex coordinates various events based on its location to different structures during the course of mitosis. Complex members include the BIR-domain-containing protein Survivin, Aurora B kinase, INCENP and Borealin. 7
GO:0019907 cyclin-dependent protein kinase activating kinase holoenzyme complex A protein complex that phosphorylates cyclin-dependent kinases such as Cdc2 on Thr161 (or an equivalent residue); contains a catalytic subunit and a regulatory subunit, and some examples also include an assembly factor. 7
GO:0005666 DNA-directed RNA polymerase III complex RNA polymerase III, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces 5S rRNA, tRNAs and some of the small nuclear RNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerase I and others of which are also found in RNA polymerases I and II. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template. 7
GO:0005754 mitochondrial proton-transporting ATP synthase, catalytic core The hexamer, comprising three alpha and three beta subunits, that possesses the catalytic activity of the mitochondrial hydrogen-transporting ATP synthase. 7
GO:0000276 mitochondrial proton-transporting ATP synthase complex, coupling factor F(o) All non-F1 subunits of the mitochondrial hydrogen-transporting ATP synthase, including integral and peripheral mitochondrial inner membrane proteins. 7
GO:0031105 septin complex Any of several heterooligomeric complexes containing multiple septins. 7
GO:0016010 dystrophin-associated glycoprotein complex A multiprotein complex that forms a strong mechanical link between the cytoskeleton and extracellular matrix; typical of, but not confined to, muscle cells. The complex is composed of transmembrane, cytoplasmic, and extracellular proteins, including dystrophin, sarcoglycans, dystroglycan, dystrobrevins, syntrophins, sarcospan, caveolin-3, and NO synthase. 7
GO:0030121 AP-1 adaptor complex A heterotetrameric AP-type membrane coat adaptor complex that consists of beta1, gamma, mu1 and sigma1 subunits and links clathrin to the membrane surface of a vesicle; vesicles with AP-1-containing coats are normally found primarily in the trans-Golgi network. In at least humans, the AP-1 complex can be heterogeneric due to the existence of multiple subunit isoforms encoded by different genes (gamma1 and gamma2, mu1A and mu1B, and sigma1A, sigma1B and sigma1C). 7
GO:0000221 vacuolar proton-transporting V-type ATPase, V1 domain The V1 domain of a proton-transporting V-type ATPase found in the vacuolar membrane. 7
GO:0005971 ribonucleoside-diphosphate reductase complex An enzyme complex composed of 2-4 or more subunits, which usually contains nonheme iron and requires ATP for catalysis. Catalyzes the formation of 2'-deoxyribonucleoside diphosphate from ribonucleoside diphosphate, using either thioredoxin disulfide or glutaredoxin disulfide as an acceptor. 7
GO:0031562 hyphal tip polarisome Protein complex that has a role in determining cell polarity, found at the tip of a growing fungal hypha. 7
GO:0005672 transcription factor TFIIA complex A component of the transcription machinery of RNA Polymerase II. In humans, TFIIA is a heterotrimer composed of an alpha (P35), beta (P19) and gamma subunits (P12). 6
GO:0030891 VCB complex A protein complex that possesses ubiquitin ligase activity; the complex is usually pentameric; for example, in mammals the subunits are pVHL, elongin B, elongin C, cullin-2 (Cul2), and Rbx1. 6
GO:0031464 Cul4A-RING ubiquitin ligase complex A ubiquitin ligase complex in which a cullin from the Cul4A subfamily and a RING domain protein form the catalytic core; substrate specificity is conferred by an adaptor protein. 6
GO:0009360 DNA polymerase III complex The DNA polymerase III holoenzyme is a complex that contains 10 different types of subunits. These subunits are organized into 3 functionally essential sub-assemblies: the pol III core, the beta sliding clamp processivity factor and the clamp-loading complex. The pol III core carries out the polymerase and the 3'-5' exonuclease proofreading activities. The polymerase is tethered to the template via the sliding clamp processivity factor. The clamp-loading complex assembles the beta processivity factor onto the primer template and plays a central role in the organization and communication at the replication fork. 6
GO:0090544 BAF-type complex A SWI/SNF-type complex that contains a subunit from the BAF (Brahma-Associated Factor) family. 6
GO:0070210 Rpd3L-Expanded complex A protein complex that contains a histone deacetylase and is part of the chromatin remodeling machinery. In Saccharomyces cerevisiae this complex contains the Rpd3p, Sin3p, Ume1p, Pho23p, Sap30p, Sds3p, Cti6p, Rxt2p, Rxt3p, Dep1p, Ume6p, Ash1p, Dot6p, Snt1, Sif2p, Set3p, Hos2p, Tos4p and Tod6p proteins. 6
GO:0072687 meiotic spindle A spindle that forms as part of meiosis. Several proteins, such as budding yeast Spo21p, fission yeast Spo2 and Spo13, and C. elegans mei-1, localize specifically to the meiotic spindle and are absent from the mitotic spindle. 6
GO:0044615 nuclear pore nuclear basket A filamentous, cage-like assembly on the nuclear face of the nuclear pore complex (NPC). In S. cerevisiae, Mlp1p and Mlp2p are two major components of the NPC nuclear basket. In vertebrates, Tpr is a major component. 6
GO:0016939 kinesin II complex A complex consisting of two distinct motor subunits that form a heterodimer complexed with a third non-motor accessory subunit, the kinesin associated protein or KAP; the KIF3 heterodimer interacts via its C-terminal portion with KAP, which is thought to regulate the binding of the motor to cargo membranes. 6
GO:0005839 proteasome core complex A multisubunit barrel shaped endoprotease complex, which is the core of the proteasome complex. 6
GO:0008385 IkappaB kinase complex A trimeric protein complex that phosphorylates inhibitory-kappaB (I-kappaB) proteins. The complex is composed of two kinase subunits (alpha and beta) and a regulatory gamma subunit (also called NEMO). In a resting state, NF-kappaB dimers are bound to inhibitory IKB proteins, sequestering NF-kappaB in the cytoplasm. Phosphorylation of I-kappaB targets I-kappaB for ubiquitination and proteasomal degradation, thus releasing the NF-kappaB dimers, which can translocate to the nucleus to bind DNA and regulate transcription. 6
GO:0005967 mitochondrial pyruvate dehydrogenase complex Complex that carries out the oxidative decarboxylation of pyruvate to form acetyl-CoA in eukaryotes; includes subunits possessing three catalytic activities: pyruvate dehydrogenase (E1), dihydrolipoamide S-acetyltransferase (E2), and dihydrolipoamide dehydrogenase (E3). The This Eukaryotic form usually contains more subunits than its bacterial counterpart; for example, one known complex contains 30 E1 dimers, 60 E2 monomers, and 6 E3 dimers as well as a few copies of pyruvate dehydrogenase kinase and pyruvate dehydrogenase phosphatase. 6
GO:0070461 SAGA-type complex A histone acetyltransferase complex that acetylates nucleosomal H3 and H2B and is required for the expression of a subset of Pol II-transcribed genes. The budding yeast complex includes the acetyltransferase Gcn5p, several proteins of the Spt and Ada families, and several TBP-associate proteins (TAFs); analogous complexes in other species have analogous compositions, and usually contain homologs of the yeast proteins. 6
GO:0031209 SCAR complex A heterotetrameric complex that includes orthologues of human PIR121, Nap125 and HSPC300 and regulates actin polymerization and/or depolymerization through small GTPase mediated signal transduction. 6
GO:0031616 spindle pole centrosome A centrosome from which one pole of a mitotic or meiotic spindle is organized. 6
GO:0036266 Cdc48p-Npl4p-Vms1p AAA ATPase complex A multiprotein ATPase complex involved in the release of polyubiquitinated proteins, including those damaged by oxidative stress, from the outer mitochondria membrane into the cytoplasm where they are presented to the proteasome for proteolysis, a process also referred to as mitochondria-associated degradation (MAD). In budding yeast, this complex includes Cdc48p, Npl4p and Vms1p. 6
GO:0071521 Cdc42 GTPase complex A protein complex formed by the association of the small GTPase Cdc42 with additional proteins. In Schizosaccharomyces the complex contains the Cdc42, Ras1, Scd1, Scd2, andShk1 proteins, and functions in the Ras1-Scd GTPase signalling pathway. 6
GO:0097025 MPP7-DLG1-LIN7 complex A heterotrimeric protein complex formed by the association of MMP7, DLG1 and either LIN7A or LIN7C; regulates the stability and localization of DLG1 to cell junctions. 6
GO:0031466 Cul5-RING ubiquitin ligase complex A ubiquitin ligase complex in which a cullin from the Cul5 subfamily and a RING domain protein form the catalytic core; substrate specificity is conferred by an elongin-BC adaptor and a SOCS/BC box protein. 6
GO:0000837 Doa10p ubiquitin ligase complex A multiprotein complex that recognizes and ubiquitinates membranes proteins with misfolded cytosolic domains during ER-associated protein degradation (ERAD). In S. cerevisiae, this complex contains the ubiquitin ligase Ssm4p/Doa10p. 6
GO:0072546 ER membrane protein complex A transmembrane protein complex that is involved in protein folding in the endoplasmic reticulum. In S. cerevisiae, it has six members: EMC1, EMC2, AIM27, EMC4, KRE27, and EMC6. 6
GO:0005749 mitochondrial respiratory chain complex II A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains the four polypeptide subunits of succinate dehydrogenase, flavin-adenine dinucleotide and iron-sulfur. Catalyzes the oxidation of succinate by ubiquinone. Connects the TCA cycle with the respiratory chain. 6
GO:0045254 pyruvate dehydrogenase complex Complex that carries out the oxidative decarboxylation of pyruvate to form acetyl-CoA; comprises subunits possessing three catalytic activities: pyruvate dehydrogenase (E1), dihydrolipoamide S-acetyltransferase (E2), and dihydrolipoamide dehydrogenase (E3). 6
GO:0022623 proteasome-activating nucleotidase complex A multisubunit complex that recognizes and unfolds core proteasome substrate proteins, and translocates them to the core complex in an ATP dependent manner. 6
GO:0017071 intracellular cyclic nucleotide activated cation channel complex A protein complex that forms a transmembrane channel through which cations ions may pass in response to an intracellular cyclic nucleotide binding to the channel complex or one of its constituent parts. 6
GO:0072669 tRNA-splicing ligase complex A protein complex that catalyzes the ligation of cleaved pre-tRNAs by directly joining spliced tRNA halves to mature-sized tRNAs by incorporating the precursor-derived splice junction phosphate into the mature tRNA as a canonical 3',5'-phosphodiester. 6
GO:0000148 1,3-beta-D-glucan synthase complex A protein complex that catalyzes the transfer of a glucose group from UDP-glucose to a (1->3)-beta-D-glucan chain. 6
GO:0005663 DNA replication factor C complex A complex of five polypeptides in eukaryotes, and two in prokaryotes, that loads the DNA polymerase processivity factor proliferating cell nuclear antigen (PCNA) onto DNA, thereby permitting processive DNA synthesis catalyzed by DNA polymerase. 5
GO:0045252 oxoglutarate dehydrogenase complex A complex of multiple copies of three enzymatic components: oxoglutarate dehydrogenase (lipoamide) ; EC:1.2.4.2 (E1), dihydrolipoamide S-succinyltransferase ; EC:2.3.1.61 (E2) and dihydrolipoamide dehydrogenase ; EC:1.8.1.4 (E3); catalyzes the overall conversion of 2-oxoglutarate to succinyl-CoA and carbon dioxide (CO2). 5
GO:0005825 half bridge of spindle pole body Structure adjacent to the plaques of the spindle pole body. 5
GO:0032777 Piccolo NuA4 histone acetyltransferase complex A heterotrimeric H4/H2A histone acetyltransferase complex with a substrate preference of chromatin over free histones. It contains a subset of the proteins found in the larger NuA4 histone acetyltransferase complex; for example, the S. cerevisiae complex contains Esa1p, Yng2p, and Epl1p. 5
GO:0032444 activin responsive factor complex A transcriptionally active complex that binds to an activin response element (ARE) in the promoter of target genes, and is composed of two SMAD2 proteins, one SMAD4 protein and a Forkhead activin signal transducer (FAST) transcription factor. 5
GO:0070044 synaptobrevin 2-SNAP-25-syntaxin-1a complex A SNARE complex that contains synaptobrevin 2 (VAMP2), SNAP-25, and syntaxin 1a (or orthologs thereof). 5
GO:0005851 eukaryotic translation initiation factor 2B complex A multisubunit guanine nucleotide exchange factor which catalyzes the exchange of GDP bound to initiation factor eIF2 for GTP, generating active eIF2-GTP. In humans, it is composed of five subunits, alpha, beta, delta, gamma and epsilon. 5
GO:0071341 medial cortical node A protein complex that contains the mid1, cdr2, wee1, klp8, and blt1 proteins, and is involved in contractile ring localization. Medial cortical node complexes appear as cortical dots in the middle of the cell during interphase, and function to recruit other ring components in early mitosis. 5
GO:0031931 TORC1 complex A protein complex that contains at least TOR (target of rapamycin) and Raptor (regulatory-associated protein of TOR), or orthologs of, in complex with other signaling components. Mediates the phosphorylation and activation of S6K. In Saccharomyces, the complex contains Kog1p, Lst8p, Tco89p, and either Tor1p or Tor2p. 5
GO:0030991 intraflagellar transport particle A The smaller subcomplex of the intraflagellar transport particle; characterized complexes have molecular weights of 710-760 kDa. 5
GO:0071141 SMAD protein complex A protein complex that consists of SMAD proteins; may be homomeric or heteromeric. 5
GO:0055028 cortical microtubule Arrays of microtubules underlying and connected to the plasma membrane in the cortical cytosol. 5
GO:0070033 synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex A SNARE complex that contains synaptobrevin 2 (VAMP2), SNAP-25, syntaxin 1a, and complexin II (or orthologs thereof). 5
GO:0070545 PeBoW complex A protein complex that is involved in coordinating ribosome biogenesis with cell cycle progression. In human, it is composed of Pes1, Bop1, and WDR12; in Saccharomyces the proteins are known as Nop7p, Erb1 and Ytm1 respectively. 5
GO:0070722 Tle3-Aes complex A transcriptional repressor complex that consists of a heterodimer of the proteins Tle3 (also known as Grg3b) and Aes (Grg5), which are homologs of the Drosophila groucho gene product. 5
GO:0000308 cytoplasmic cyclin-dependent protein kinase holoenzyme complex Cyclin-dependent protein kinase (CDK) complex found in the cytoplasm. 5
GO:0018444 translation release factor complex A heterodimeric complex involved in the release of a nascent polypeptide chain from a ribosome. 5
GO:0032021 NELF complex A complex of five proteins, designated NELF-A, -B, -C, -D, and -E in human, that can physically associate with RNP polymerase II to induce transcriptional pausing. 5
GO:0070176 DRM complex A transcriptional repressor complex that contains the lin-9, lin-35, lin-37, lin-52, lin-53, lin-5is involved in 4-, dpl-1 and efl-1 proteins, and is involved in cell fate specification. 5
GO:0070937 CRD-mediated mRNA stability complex A protein complex that binds to, and promotes stabilization of, mRNA molecules containing the coding region instability determinant (CRD). In human, IGF2BP1 and at least four additional proteins: HNRNPU, SYNCRIP, YBX1, and DHX9. 5
GO:0005638 lamin filament Any of a group of intermediate-filament proteins that form the fibrous matrix on the inner surface of the nuclear envelope. They are classified as lamins A, B and C. 5
GO:0005942 phosphatidylinositol 3-kinase complex A complex containing a heterodimer of a catalytic subunit and a regulatory (adaptor) subunit of any phosphatidylinositol 3-kinase (PI3K). 5
GO:0070822 Sin3-type complex Any of a number of evolutionarily conserved histone deacetylase complexes (HDACs) containing a core consisting of a paired amphipathic helix motif protein (e.g. Sin3p in S. cerevisiae, Pst1 in S. pombe or Sin3A in mammals) at least one class I histone deacetylase (e.g. Rpd3p in S. cerevisiae, Clr6 in S. pombe, or HDAC1 and HDAC2 in mammals), and at least one WD40 repeat protein (e.g. Ume1p in S. cerevisiae, Prw1 in S. pombe, or RbAp46 and RbAp48 in mammals). These complexes also contain a variable number of other proteins that direct histone binding, DNA binding, or add other functionality to the complex. 5
GO:0033186 CAF-1 complex A conserved heterotrimeric protein complex that promotes histone H3 and H4 deposition onto newly synthesized DNA during replication or DNA repair; specifically facilitates replication-dependent nucleosome assembly with the major histone H3 (H3.1). In many species the CAF-1 subunits are designated p150, p60, and p48. 5
GO:0031391 Elg1 RFC-like complex A pentameric complex related to replication factor C, which loads the DNA polymerase processivity factor proliferating cell nuclear antigen (PCNA) onto DNA and has roles in telomere length regulation and other aspects of genome stability. In Saccharomyces the subunits are known as Elg1p, Rfc2p, Rfc3p, Rfc4p, and Rfc5p. 5
GO:0019908 nuclear cyclin-dependent protein kinase holoenzyme complex Cyclin-dependent protein kinase (CDK) complex found in the nucleus. 5
GO:0000439 core TFIIH complex The 5 subunit core of TFIIH that has tightly associated subunits and is found in both the general transcription factor holo-TFIIH and in the nucleotide-excision repair factor 3 complex. In S. cerevisiae, it is composed of Rad3, Tfb1, Tfb2, Ssl1, Tfb4. In humans, it is composed of XPD, p62, p55, p44, p34. 5
GO:0031465 Cul4B-RING ubiquitin ligase complex A ubiquitin ligase complex in which a cullin from the Cul4B subfamily and a RING domain protein form the catalytic core; substrate specificity is conferred by unknown subunits. 5
GO:0005610 laminin-5 complex A laminin complex composed of alpha3, beta3 and gamma2 polypeptide chains. 5
GO:0043256 laminin complex A large, extracellular glycoprotein complex composed of three different polypeptide chains, alpha, beta and gamma. Provides an integral part of the structural scaffolding of basement membranes. 5
GO:0071203 WASH complex A protein complex that localizes at the surface of endosomes, where it recruits and activates the Arp2/3 complex to induce actin polymerization. In human, the WASH complex is composed of F-actin-capping protein subunits alpha and beta, WASH1, FAM21, KIAA1033, KIAA0196 and CCDC53. 5
GO:0005955 calcineurin complex A heterodimeric calcium ion and calmodulin dependent protein phosphatase composed of catalytic and regulatory subunits; the regulatory subunit is very similar in sequence to calmodulin. 5
GO:0034991 nuclear meiotic cohesin complex A cohesin complex that mediates sister chromatid cohesion in the nucleus during meiosis; has a subunit composition distinct from that of the meiotic cohesin complex. 4
GO:0097346 INO80-type complex A chromatin remodeling protein complex initially purified from S. cerevisiae and containing more than 10 subunits, including the SWR1-related complexes. INO80 (inositol requiring 80)-type complexes have diverse functions, including promoting transcriptional activation and DNA repair. 4
GO:0005899 insulin receptor complex A disulfide-bonded, heterotetrameric receptor complex. The alpha chains are entirely extracellular, while each beta chain has one transmembrane domain. The ligand binds to the alpha subunit extracellular domain and the kinase is associated with the beta subunit intracellular domain. 4
GO:0000500 RNA polymerase I upstream activating factor complex A complex required for the transcription of rDNA by RNA polymerase I. In yeast the complex consists of Rrrn5p, Rrn9p, Rrn10p, histones H3 and H4, and Uaf30p. 4
GO:0031390 Ctf18 RFC-like complex A heptameric complex related to replication factor C, which loads the DNA polymerase processivity factor proliferating cell nuclear antigen (PCNA) onto DNA and plays a vital role in chromosome cohesion. In Saccharomyces the subunits are known as Ctf18p, Rfc2p, Rfc3p, Rfc4p, Rfc5p, Dcc1p, and Ctf8p. 4
GO:0000796 condensin complex A multisubunit protein complex that plays a central role in chromosome condensation. 4
GO:0000126 transcription factor TFIIIB complex A transcription factor complex that is involved in regulating transcription from RNA polymerase III (Pol III) promoters. TFIIIB contains the TATA-binding protein (TBP) and two Pol III-specific proteins, B'' and BRF. 4
GO:0070436 Grb2-EGFR complex A protein complex that contains the epidermal growth factor receptor (EGFR) and Grb2, and is involved in linking EGFR activation to the p21-Ras pathway. 4
GO:0035631 CD40 receptor complex A protein complex that contains at least CD40 (a cell surface receptor of the tumour necrosis factor receptor (TNFR) superfamily), and other signaling molecules. 4
GO:0000346 transcription export complex The transcription export (TREX) complex couples transcription elongation by RNA polymerase II to mRNA export. The complex associates with the polymerase and travels with it along the length of the transcribed gene. TREX is composed of the THO transcription elongation complex as well as other proteins that couple THO to mRNA export proteins. The TREX complex is known to be found in a wide range of eukaryotes, including S. cerevisiae and metazoans. 4
GO:0045239 tricarboxylic acid cycle enzyme complex Any of the heteromeric enzymes that act in the TCA cycle. 4
GO:0033551 monopolin complex A protein complex required for clamping microtubule binding sites, ensuring orientation of sister kinetochores to the same pole (mono-orientation) during meiosis I. In the yeast S. cerevisiae this complex consists of Csm1p, Lrs4p, Hrr25p and Mam1p; in S. pombe Psc1 and Mde4 have been identified as subunits. 4
GO:0048179 activin receptor complex A protein complex that acts as an activin receptor. Heterodimeric activin receptors, comprising one Type I activin receptor and one Type II receptor polypeptide, and heterotrimeric receptors have been observed. 4
GO:0002193 MAML1-RBP-Jkappa- ICN1 complex A protein complex that consists of the intracellular domain of Notch1 (ICN1), the DNA-binding transcription factor RBP-Jkappa, and the transcriptional coactivator Mastermind-like-1 (MAML1); the complex is involved in transcriptional activation in response to Notch-mediated signaling. 4
GO:0016600 flotillin complex A protein complex that contains flotillin-1 and flotillin-2, and may contain associated proteins. Flotillins associate into membrane microdomains resembling caveolae. 4
GO:0008290 F-actin capping protein complex A heterodimer consisting of alpha and beta subunits that binds to and caps the barbed ends of actin filaments, thereby regulating the polymerization of actin monomers but not severing actin filaments. 4
GO:0030914 STAGA complex A large multiprotein complex that possesses histone acetyltransferase and is involved in regulation of transcription. The composition is similar to that of the SAGA complex; for example, the human complex contains the transcription-transformation cofactor TRRAP, hGCN5L acetylase, novel human ADA-like and SPT-like cofactors, and a subset of TAFs. 4
GO:0097362 MCM8-MCM9 complex A hexameric protein complex composed of MCM8 and MCM9 and involved in homologous recombination repair following DNA interstrand cross-links. 4
GO:0030893 meiotic cohesin complex A cohesin complex that mediates sister chromatid cohesion during meiosis; has a subunit composition distinct from that of the mitotic cohesin complex. 4
GO:0032221 Rpd3S complex A eukaryotically conserved histone deacetylase complex which deacetylates histones preferentially in promoter regions. Composed of a catalytic histone deacetylase subunit, a chromodomain protein, a SIN3 family co-repressor, and a WD repeat protein (Clr6p, Alp13p, Pst2p, and Prw1p respectively in Schizosaccharomyces; Rpd3p, Sin3p, Ume1p, Rco1p and Eaf3 in Saccharomyces; homologs thereof in other species). 4
GO:0036038 TCTN-B9D complex A protein complex that is located at the ciliary transition zone and consists of tectonic proteins, B9 domain-containing proteins and other proteins. Acts as a barrier that prevents diffusion of transmembrane proteins between the cilia and plasma membranes. In mouse, members of the complex include TCTN1, TCTN2, B9D1, MKS1, CC2D2A and other proteins. 4
GO:0005945 6-phosphofructokinase complex A protein complex that possesses 6-phosphofructokinase activity; homodimeric, homooctameric, and allosteric homotetrameric forms are known. 4
GO:0030130 clathrin coat of trans-Golgi network vesicle A clathrin coat found on a vesicle of the trans-Golgi network. 4
GO:0000015 phosphopyruvate hydratase complex A multimeric enzyme complex, usually a dimer or an octamer, that catalyzes the conversion of 2-phospho-D-glycerate to phosphoenolpyruvate and water. 4
GO:0031389 Rad17 RFC-like complex A pentameric protein complex related to replication factor C, which loads a trimeric complex of checkpoint proteins (known as the checkpoint clamp or 9-1-1 complex) onto DNA at damage sites; functions in DNA damage cell cycle checkpoints. In Schizosaccharomyces pombe the subunits are known as Rad17, Rfc2, Rfc3, Rfc4, and Rfc5, while in Saccharomyces cerevisiae the subunits are known as Rad24p, Rfc2p, Rfc3p, Rfc4p, and Rfc5p. 4
GO:0090537 CERF complex An ISWI complex that contains an ATPase subunit of the ISWI family (specifically SNF2L in mammals, which contain two ISWI homologs) and a CECR2 homolog. In mammals, CERF is involved in regulation of transcription from RNA polymerase II promoters. 4
GO:0070860 RNA polymerase I core factor complex A RNA polymerase I-specific transcription factor complex that is required for the transcription of rDNA by RNA polymerase I. In yeast the complex consists of Rrn6p, Rrn7p, and Rrn11p. 4
GO:0008023 transcription elongation factor complex Any protein complex that interacts with RNA polymerase II to increase (positive transcription elongation factor) or reduce (negative transcription elongation factor) the rate of transcription elongation. 4
GO:0009317 acetyl-CoA carboxylase complex A protein complex that catalyzes the first step in long-chain fatty acid biosynthesis. For example, in E. coli the complex is heterohexameric and composed of biotin carbonyl carrier protein, biotin carboxylase and the acetate CoA-transferase complex. 4
GO:0005858 axonemal dynein complex A dynein complex found in eukaryotic cilia and flagella; the motor domain heads interact with adjacent microtubules to generate a sliding force which is converted to a bending motion. May contain two or three dynein heavy chains as well as several light chains. 4
GO:0005784 Sec61 translocon complex A translocon complex that contains a core heterotrimer of conserved alpha, beta and gamma subunits, and may contain additional proteins (translocon-associated proteins or TRAPs); in budding yeast the core proteins are Sec61p, Sbh1p, and Sss1p. The Sec61 translocon complex functions in cotranslational and posttranslational translocation events. 4
GO:0034993 SUN-KASH complex A protein complex that spans the nuclear outer and inner membranes, thereby linking the major cytoplasmic cytoskeleton elements to the nuclear lumen; the complex is conserved in eukaryotes and contains proteins with SUN and KASH domains. 4
GO:0072487 MSL complex A histone acetyltransferase complex that catalyzes the acetylation of a histone H4 lysine residue at position 16. In human, it contains the catalytic subunit MOF, and MSL1, MSL2 and MSL3. 4
GO:0016272 prefoldin complex A multisubunit chaperone that acts to delivers unfolded proteins to cytosolic chaperonin. In humans, the complex is a heterohexamer of two PFD-alpha and four PFD-beta type subunits. 4
GO:0070032 synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex A SNARE complex that contains synaptobrevin 2 (VAMP2), SNAP-25, syntaxin 1a, and complexin I (or orthologs thereof). 4
GO:0016471 vacuolar proton-transporting V-type ATPase complex A proton-transporting two-sector ATPase complex found in the vacuolar membrane, where it acts as a proton pump to mediate acidification of the vacuolar lumen. 4
GO:0045244 succinate-CoA ligase complex (GDP-forming) A heterodimeric enzyme complex, usually composed of an alpha and beta chain. Functions in the TCA cycle, hydrolyzing succinyl-CoA into succinate and CoA, thereby forming GTP. 4
GO:0070390 transcription export complex 2 A protein complex that couples SAGA-dependent gene expression to mRNA export at the inner side of the nuclear pore complex (NPC). The TREX-2 complex is tethered to the inner side of the NPC via the nucleoporins Nup1 and Nup60; in S. cerevisiae it contains Sac3p, Thp1p, Sus1p and Cdc31p. 4
GO:0000109 nucleotide-excision repair complex Any complex formed of proteins that act in nucleotide-excision repair. 4
GO:0071778 WINAC complex A SWI/SNF-type complex that directly interacts with the vitamin D receptor (VDR) through the Williams syndrome transcription factor (WSTF), and mediates the recruitment of unliganded VDR to VDR target sites in promoters. The WINAC complex contains at least 13 subunits, including WSTF, several SWI/SNF components, and DNA replication-related factors. 4
GO:0005736 DNA-directed RNA polymerase I complex RNA polymerase I, one of three nuclear DNA-directed RNA polymerases found in all eukaryotes, is a multisubunit complex; typically it produces rRNAs. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The remainder of the complex is composed of smaller subunits (generally ten or more), some of which are also found in RNA polymerase III and others of which are also found in RNA polymerases II and III. Although the core is competent to mediate ribonucleic acid synthesis, it requires additional factors to select the appropriate template. 4
GO:0016593 Cdc73/Paf1 complex A multiprotein complex that associates with RNA polymerase II and general RNA polymerase II transcription factor complexes and may be involved in both transcriptional initiation and elongation. In Saccharomyces the complex contains Paf1p, Cdc73p, Ctr9p, Rtf1p, and Leo1p. 4
GO:0000940 condensed chromosome outer kinetochore The region of a condensed chromosome kinetochore most external to centromeric DNA; this outer region mediates kinetochore-microtubule interactions. 4
GO:0009330 DNA topoisomerase complex (ATP-hydrolyzing) Complex that possesses DNA topoisomerase (ATP-hydrolyzing) activity. 4
GO:0070209 ASTRA complex A protein complex that is part of the chromatin remodeling machinery; the acronym stands for ASsembly of Tel, Rvb and Atm-like kinase. In Saccharomyces cerevisiae this complex includes Rvb1p, Rvb2p, Tra1p, Tel2p, Asa1p, Ttilp and Tti2p. 4
GO:0031213 RSF complex An ISWI complex that contains an ATPase subunit of the ISWI family (SNF2H in mammals) and an RSF1 homolog. It mediates nucleosome deposition and generates regularly spaced nucleosome arrays. In mammals, RSF is involved in regulation of transcription from RNA polymerase II promoters). 4
GO:0008074 guanylate cyclase complex, soluble Complex that possesses guanylate cyclase activity and is not bound to a membrane. 4
GO:0033698 Rpd3L complex A histone deacetylase complex which deacetylates histones across gene coding regions. Composed of a catalytic histone deacetylase subunit, an Sds-3 family protein, a SIN3 family co-repressor, a WD repeat protein, and a zf- PHD finger (Clr6, Sds3, Pst1, Prw1, Png2 in Schizosaccharomyces pombe; Rpd3p, Sin3p, Ume1p, Pho23p, Sap30p, Sds3p, Cti6p, Rxt2p, Rxt3p, Dep1p, Ume6p and Ash1p in Saccharomyces cerevisiae). 4
GO:0070724 BMP receptor complex A protein complex that acts as a receptor for bone morphogenetic proteins (BMPs); a homo- or heterodimer of type I and/or type II BMP receptor subunits. 4
GO:0045260 plasma membrane proton-transporting ATP synthase complex A proton-transporting ATP synthase complex found in the plasma membrane. Examples of this component are found in Bacterial species. 4
GO:0030877 beta-catenin destruction complex A cytoplasmic protein complex containing glycogen synthase kinase-3-beta (GSK-3-beta), the adenomatous polyposis coli protein (APC), and the scaffolding protein axin, among others; phosphorylates beta-catenin, targets it for degradation by the proteasome. 4
GO:0001518 voltage-gated sodium channel complex A sodium channel in a cell membrane whose opening is governed by the membrane potential. 3
GO:0031371 ubiquitin conjugating enzyme complex Any complex that possesses ubiquitin conjugating enzyme activity. 3
GO:0008024 positive transcription elongation factor complex b A transcription elongation factor complex that facilitates the transition from abortive to productive elongation by phosphorylating the CTD domain of the large subunit of DNA-directed RNA polymerase II, holoenzyme. Contains cyclin T and a cyclin-dependent protein kinase catalytic subunit. 3
GO:0032983 kainate selective glutamate receptor complex An assembly of four or five subunits which form a structure with an extracellular N-terminus and a large loop that together form the ligand binding domain. The C-terminus is intracellular. The ionotropic glutamate receptor complex itself acts as a ligand gated ion channel; on binding glutamate, charged ions pass through a channel in the center of the receptor complex. Kainate receptors are multimeric assemblies of GluR5-7 and KA-1/2 subunits. 3
GO:0033597 mitotic checkpoint complex A multiprotein complex that functions as a mitotic checkpoint inhibitor of the anaphase-promoting complex/cyclosome (APC/C). In budding yeast this complex consists of Mad2p, Mad3p, Bub3p and Cdc20p, and in mammalian cells it consists of MAD2, BUBR1, BUB3, and CDC20. 3
GO:0071540 eukaryotic translation initiation factor 3 complex, eIF3e An eukaryotic translation initiation factor 3 complex that contains the PCI-domain protein eIF3e. 3
GO:0009329 acetate CoA-transferase complex A heterotetrameric enzyme complex made up of two alpha subunits and two beta subunits. Part of the acetyl-CoA carboxylase complex. Catalyzes the transfer of a carboxyl group to form malonyl-CoA. 3
GO:0070985 TFIIK complex A transcription factor complex that forms part of the holo TFIIH complex. In Saccharomyces, TFIIK contains Ccl1p, Tfb3p and Kin2p. 3
GO:0046696 lipopolysaccharide receptor complex A multiprotein complex that consists of at least three proteins, CD14, TLR4, and MD-2, each of which is glycosylated. 3
GO:0031588 AMP-activated protein kinase complex A protein complex that possesses AMP-dependent protein kinase activity. 3
GO:0034666 alpha2-beta1 integrin complex An integrin complex that comprises one alpha2 subunit and one beta1 subunit. 3
GO:0008274 gamma-tubulin ring complex A multiprotein complex composed of gamma-tubulin and other non-tubulin proteins that forms a flexible open ring structure thought to be the unit of nucleation at the minus end of a microtubule. 3
GO:0016590 ACF complex An ISWI complex that contains an ATPase subunit of the ISWI family (SNF2H in mammals, Isw2 in S. cerevisiae), an ACF1 homolog, and generally no other subunits, though Xenopus is an exception with a third non-conserved subunit. ACF plays roles in regulation of RNA polymerase II transcription and in DNA replication and repair. 3
GO:0030118 clathrin coat A membrane coat found on coated pits and some coated vesicles; consists of polymerized clathrin triskelions, each comprising three clathrin heavy chains and three clathrin light chains, linked to the membrane via one of the AP adaptor complexes. 3
GO:0002189 ribose phosphate diphosphokinase complex A protein complex having ribose phosphate diphosphokinase activity. 3
GO:0000506 glycosylphosphatidylinositol-N-acetylglucosaminyltransferase (GPI-GnT) complex An enzyme complex that catalyzes the transfer of GlcNAc from UDP-GlcNAc to an acceptor phosphatidylinositol, the first step in the production of GPI anchors for cell surface proteins. The complex contains PIG-A, PIG-C, PIG-H, PIG-Q, PIG-P, and DPM2 in human, and Eri1p, Gpi1p, Gpi2p, Gpi15p, Gpi19p, and Spt14p in budding yeast. 3
GO:0009353 mitochondrial oxoglutarate dehydrogenase complex A complex of multiple copies of three enzymatic components: oxoglutarate dehydrogenase (lipoamide) ; EC:1.2.4.2 (E1), dihydrolipoamide S-succinyltransferase ; EC:2.3.1.61 (E2) and dihydrolipoamide dehydrogenase ; EC:1.8.1.4 (E3); catalyzes the overall conversion of 2-oxoglutarate to succinyl-CoA and carbon dioxide (CO2) within the mitochondrial matrix. An example of this complex is found in Mus musculus. 3
GO:0005962 mitochondrial isocitrate dehydrogenase complex (NAD+) Mitochondrial complex that possesses isocitrate dehydrogenase (NAD+) activity. 3
GO:0000112 nucleotide-excision repair factor 3 complex One of several protein complexes involved in nucleotide-excision repair; possesses endodeoxynuclease and DNA helicase activities. In S. cerevisiae, it is composed of Rad2p and the core TFIIH-Ssl2p complex (Core TFIIH is composed of Rad3p, Tfb1p, Tfb2p, Ssl1p, and Tfb4p. Note that Ssl2p is also called Rad25p). 3
GO:0070069 cytochrome complex A protein complex in which at least one of the proteins is a cytochrome, i.e. a heme-containing protein involved in catalysis of redox reactions. 3
GO:0044614 nuclear pore cytoplasmic filaments Filamentous extensions on cytoplasmic face of the nuclear pore complex (NPC). In S. cerevisiae, Nup159p, Nup82p, and Nup42p contribute to the cytoplasmic filaments. In vertebrates, Nup358 is a major component. 3
GO:0000178 exosome (RNase complex) Complex of 3'-5' exoribonucleases. 3
GO:0042101 T cell receptor complex A protein complex that contains a disulfide-linked heterodimer of T cell receptor (TCR) chains, which are members of the immunoglobulin superfamily, and mediates antigen recognition, ultimately resulting in T cell activation. The TCR heterodimer is associated with the CD3 complex, which consists of the nonpolymorphic polypeptides gamma, delta, epsilon, zeta, and, in some cases, eta (an RNA splice variant of zeta) or Fc epsilon chains. 3
GO:0070211 Snt2C complex A histone deacetylase complex that is part of the chromatin remodeling machinery. In Saccharomyces cerevisiae this complex contains Snt2p, Ecm5p and Rpd3p. 3
GO:0034457 Mpp10 complex A protein complex that forms a subcomplex of the 90S preribosome. In S. cerevisiae, it is composed of Mpp10p, Imp3p and Imp4p. 3
GO:0035097 histone methyltransferase complex A multimeric complex that is able to catalyze the addition of methyl groups to histone proteins. 3
GO:0042765 GPI-anchor transamidase complex An enzyme complex which in humans and yeast consists of at least five proteins; for example, the complex contains GAA1, GPI8, PIG-S, PIG-U, and PIG-T in human, and Gaa1p, Gab1p, Gpi8p, Gpi16p, and Gpi17p in yeast. Catalyzes the posttranslational attachment of the carboxyl-terminus of a precursor protein to a GPI-anchor. 3
GO:0005658 alpha DNA polymerase:primase complex A complex of four polypeptides, comprising large and small DNA polymerase alpha subunits and two primase subunits, which catalyzes the synthesis of an RNA primer on the lagging strand of replicating DNA; the smaller of the two primase subunits alone can catalyze oligoribonucleotide synthesis. 3
GO:0016342 catenin complex Complex of peripheral cytoplasmic proteins (alpha-, beta- and gamma-catenin) that interact with the cytoplasmic region of uvomorulin/E-cadherin to connect it to the actin cytoskeleton. 3
GO:0045250 cytosolic pyruvate dehydrogenase complex Complex that carries out the oxidative decarboxylation of pyruvate to form acetyl-CoA; comprises subunits possessing three catalytic activities: pyruvate dehydrogenase (E1), dihydrolipoamide S-acetyltransferase (E2), and dihydrolipoamide dehydrogenase (E3). Usually contains fewer subunits than its eukaryotic counterpart; for example, the E. coli complex contains 12 E1 dimers, 8 E2 trimers, and 6 E3 dimers arranged in highly symmetric cubic order. 3
GO:0008231 repressor ecdysone receptor complex A protein complex consisting of a heterodimer of Ecdysone receptor (EcR) and ultraspiracle (usp) plus an associated corepressor such as SMRTER, which represses transcription of target genes. 3
GO:0070876 SOSS complex A protein complex that functions downstream of the MRN complex to promote DNA repair and the G2/M checkpoint. The SOSS complex associates with single-stranded DNA at DNA lesions and is composed of SOSS-B (SOSS-B1/OBFC2B or SOSS-B2/OBFC2A), SOSS-A/INTS3 and SOSS-C/C9orf80. 3
GO:0005751 mitochondrial respiratory chain complex IV A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains the 13 polypeptide subunits of cytochrome c oxidase, including cytochrome a and cytochrome a3. Catalyzes the oxidation of reduced cytochrome c by dioxygen (O2). 3
GO:0008278 cohesin complex A protein complex that is required for sister chromatid cohesion in eukaryotes. The cohesin complex forms a molecular ring complex, and is composed of structural maintenance of chromosomes (SMC) and kleisin proteins. For example, in yeast, the complex is composed of the SMC proteins Smc1p and Smc3p, and the kleisin protein Scc1p. In vertebrates, the complex is composed of the SMC1 (SMC1A or SMC1B) and SMC3 heterodimer attached via their hinge domains to a kleisin (RAD21, REC8 or RAD21L) which links them, and one STAG protein (STAG1, STAG2 or STAG3). 3
GO:0005947 mitochondrial alpha-ketoglutarate dehydrogenase complex Mitochondrial complex that possesses alpha-ketoglutarate dehydrogenase activity. 3
GO:0005964 phosphorylase kinase complex An enzyme complex that catalyzes the phosphorylation of phosphorylase b to form phosphorylase a. 3
GO:0005664 nuclear origin of replication recognition complex A multisubunit complex that is located at the replication origins of a chromosome in the nucleus. 3
GO:0008043 intracellular ferritin complex A ferritin complex located in the cell. Intracellular ferritin complexes contain 24 subunits, in a mixture of L (light) chains and H (heavy) chains. 3
GO:0043259 laminin-10 complex A laminin complex composed of alpha5, beta1 and gamma1 polypeptide chains. 3
GO:0031205 endoplasmic reticulum Sec complex An endoplasmic reticulum membrane-associated complex involved in the translocation of proteins that are targeted to the ER. In yeast, this complex consists of two subcomplexes, namely, the Sec61 complex and the Sec62/Sec63 complex. 3
GO:0031395 bursicon neuropeptide hormone complex A neuropeptide hormone secreted by the central nervous system of insects that stimulates the tanning and sclerotization of the adult cuticle following eclosion. The active hormone consists of an obligate heterodimer of the alpha and beta subunits. 3
GO:0071541 eukaryotic translation initiation factor 3 complex, eIF3m An eukaryotic translation initiation factor 3 complex that contains the PCI-domain protein eIF3m. 3
GO:0030132 clathrin coat of coated pit The coat found on coated pits and the coated vesicles derived from coated pits; comprises clathrin and the AP-2 adaptor complex. 3
GO:0009346 citrate lyase complex Citrate lyase is a multienzyme complex with three constituents: the alpha subunit, citrate-ACP transferase; the beta subunit, citryl-ACP lyase; and the gamma subunit, an acyl-carrier protein which also carries the prosthetic group components. All three subunits are required for citrate lyase enzyme activity. 3
GO:0016602 CCAAT-binding factor complex A heteromeric transcription factor complex that binds to the CCAAT-box upstream of promoters; in Saccharomyces it activates the transcription of genes in response to growth in a nonfermentable carbon source; consists of four known subunits: HAP2, HAP3, HAP4 and HAP5. 3
GO:0071439 clathrin complex A protein complex that consists of three clathrin heavy chains and three clathrin light chains, organized into a symmetrical three-legged structure called a triskelion. In clathrin-coated vesicles clathrin is the main component of the coat and forms a polymeric mechanical scaffold on the vesicle surface. 3
GO:0009841 mitochondrial endopeptidase Clp complex A Clp endopeptidase complex located in the mitochondrion. 3
GO:0031680 G-protein beta/gamma-subunit complex The heterodimer formed by the beta and gamma subunits of a heterotrimeric G protein, which dissociates from the alpha subunit upon guanine nuclotide exchange. 2
GO:0009840 chloroplastic endopeptidase Clp complex A Clp endopeptidase complex located in the chloroplast. 2
GO:0071958 new mitotic spindle pole body The spindle pole body that is formed by spindle pole body duplication, and to which proteins involved in mitotic exit signaling (for example, the septation initiation network in fission yeast) localize. 2
GO:0005960 glycine cleavage complex A protein complex that catalyzes the reversible oxidation of glycine. In E. coli, it has four components: dihydrolipoamide dehydrogenase, glycine dehydrogenase (decarboxylating), lipoyl-GcvH-protein and aminomethyltransferase, also known as L, P, H, and T. 2
GO:0042824 MHC class I peptide loading complex A large, multisubunit complex which consists of the MHC class I-beta 2 microglobulin dimer, the transporter associated with antigen presentation (TAP), tapasin (an MHC-encoded membrane protein), the chaperone calreticulin and the thiol oxidoreductase ERp57. Functions in the assembly of peptides with newly synthesized MHC class I molecules. 2
GO:0031415 NatA complex A conserved complex that catalyzes the transfer of an acetyl group to an N-terminal Ser, Ala, Gly, or Thr residue of a protein acceptor molecule. In Saccharomyces the complex includes Nat1p and Ard1p, and may contain additional proteins. 2
GO:0008275 gamma-tubulin small complex A complex usually comprising two gamma-tubulin molecules and two conserved non-tubulin proteins. Some gamma-tubulin small complexes are thought to be the repeating unit making up the core of the gamma-tubulin ring complex. 2
GO:0035632 mitochondrial prohibitin complex A complex composed of two proteins, prohibitin 1 and prohibitin 2 (PHB1/PHB-1 and PHB2/PHB-2) that is highly conserved amongst eukaryotes and associated with the inner mitochondrial membrane. The mitochondrial prohibitin complex is a macromolecular supercomplex composed of repeating heterodimeric subunits of PHB1 and PHB2. The mitochondrial prohibitin complex plays a role in a number of biological processes, including mitochondrial biogenesis and function, development, replicative senescence, and cell death. 2
GO:0032044 DSIF complex A heterodimeric protein complex formed of Spt4 and Spt5 proteins which is expressed in eukaryotes from yeast to man. DSIF is an inhibitory elongation factor that promotes RNA polymerase II transcriptional pausing, but can also stimulate transcriptional elongation under certain conditions, and may play a role in RNA processing via its physical association with mRNA capping enzymes. 2
GO:0035859 Seh1-associated complex A protein complex that associates dynamically with the vacuolar membrane, and is proposed to have a role in membrane-associated trafficking or regulatory processes. In S. cerevisiae the complex contains Seh1p, Sec13p, Npr2p, Npr3p, Iml1p, Mtc5p, Rtc1p, and Sea4p. 2
GO:0030119 AP-type membrane coat adaptor complex Any of several heterotetrameric complexes that link clathrin (or another coat-forming molecule, as hypothesized for AP-3 and AP-4) to a membrane surface; they are found on coated pits and coated vesicles, and mediate sorting of cargo proteins into vesicles. Each AP complex contains two large (a beta and one of either an alpha, gamma, delta, or epsilon) subunits (110-130 kDa), a medium (mu) subunit (approximately 50 kDa), and a small (sigma) subunit (15-20 kDa). 2
GO:0070765 gamma-secretase complex A protein complex that has aspartic-type endopeptidase activity, and contains a catalytic subunit, presenilin (PS), that is a prototypical member of the GxGD-type aspartyl peptidases. The complex also contains additional subunits, including nicastrin, APH-1, PEN-2, and a regulatory subunit, CD147. Gamma-secretase cleaves several transmembrane proteins including the cell surface receptor Notch and the beta-amyloid precursor protein. 2
GO:0016469 proton-transporting two-sector ATPase complex A large protein complex that catalyzes the synthesis or hydrolysis of ATP by a rotational mechanism, coupled to the transport of protons across a membrane. The complex comprises a membrane sector (F0, V0, or A0) that carries out proton transport and a cytoplasmic compartment sector (F1, V1, or A1) that catalyzes ATP synthesis or hydrolysis. Two major types have been characterized: V-type ATPases couple ATP hydrolysis to the transport of protons across a concentration gradient, whereas F-type ATPases, also known as ATP synthases, normally run in the reverse direction to utilize energy from a proton concentration or electrochemical gradient to synthesize ATP. A third type, A-type ATPases have been found in archaea, and are closely related to eukaryotic V-type ATPases but are reversible. 2
GO:0000938 GARP complex A quatrefoil tethering complex required for retrograde traffic from the early endosome back to the late Golgi and biogenesis of cytoplasmic vesicles. 2
GO:0035339 SPOTS complex A multiprotein complex at least composed of serine palmitoyltransferases and ORM proteins (known as ORMDL proteins in mammals and other higher vertebrates) that plays a key role in sphingolipid homeostasis. 2
GO:0005956 protein kinase CK2 complex A protein complex that possesses protein serine/threonine kinase activity, and contains two catalytic alpha subunits and two regulatory beta subunits. Protein kinase CK2 complexes are found in nearly every subcellular compartment, and can phosphorylate many protein substrates in addition to casein. 2
GO:0042721 mitochondrial inner membrane protein insertion complex A multi-subunit complex embedded in the mitochondrial inner membrane that mediates insertion of carrier proteins into the inner membrane. 2
GO:0045025 mitochondrial degradosome A mitochondrial protein complex with 3' to 5' exoribonuclease activity that participates in intron-independent turnover and processing of mitochondrial transcripts. In humans, the mitochondrial degradosome is a pentameric complex, and in yeast it exists as a heterodimer. 2
GO:0002095 caveolar macromolecular signaling complex A complex composed of proteins required for beta adrenergic receptor activation of protein kinase A. It includes the Cav 12. subunit of L-type calcium channel, protein kinase A regulatory subunit 2(PKAR2), adenyl cyclase, beta-adrenergic receptor, G-alpha-S, protein phosphatase 2A (PP2A) and caveolin 3 (CAV3). 2
GO:0035301 Hedgehog signaling complex A multiprotein complex that binds microtubules in a Hedgehog-dependent manner, and is required for signal transduction by members of the Hedgehog family of proteins. The core components of the complex are the serine/threonine protein kinase Fused, the kinesin motor protein Costal2 (Cos2), and a zinc finger transcription factor (Gli family members in humans, and Cubitus interruptus (Ci) in Drosophila). 2
GO:0030131 clathrin adaptor complex A membrane coat adaptor complex that links clathrin to a membrane. 2
GO:0034990 nuclear mitotic cohesin complex A cohesin complex that mediates sister chromatid cohesion in the nucleus during mitosis; has a subunit composition distinct from that of the meiotic cohesin complex. 2
GO:0030904 retromer complex A conserved multimeric membrane-associated complex involved in retrograde transport from endosomes to the Golgi apparatus. For example, the budding yeast retromer comprises Vps35p, Vps29p, Vps26p, Vps5p, and Vps17p. 2
GO:0045282 plasma membrane succinate dehydrogenase complex A multimeric complex which consists of flavoprotein (subunit A ; InterPro:IPR003952), iron-sulfur protein (subunit B) and membrane-bound cytochrome b560 (subunit C; InterPro:IPR000701). In some Archaea, the membrane-bound subunits (C or C and D) do not necessarily contain heme. Membrane-bound subunits can bind/react with quinones. Examples of this component are found in Bacterial species. 2
GO:0030956 glutamyl-tRNA(Gln) amidotransferase complex A protein complex that possesses glutamyl-tRNA(Gln) amidotransferase activity, and therefore creates Gln-tRNA by amidating Glu-tRNA; usually composed of 3 subunits: A, B, and C. Note that the C subunit may not be required in all organisms. 2
GO:0005846 nuclear cap binding complex A conserved heterodimeric protein complex that binds to the 5' terminal cap structure m7G(5')ppp(5')N of nascent eukaryotic RNA polymerase II transcripts such as pre-mRNA and U snRNA. The consists of proteins known as CBP20 and CBP80, binds to cap structures in the nucleus, and is involved in pre-mRNA splicing, 3'-end formation, and RNA nuclear export. 2
GO:0005742 mitochondrial outer membrane translocase complex A large complex of the mitochondrial outer membrane that mediates transport of proteins into all mitochondrial compartments. 2
GO:0000419 DNA-directed RNA polymerase V complex RNA polymerase V is a multisubunit RNA polymerase complex found in the nucleus of plants and involved in accumulation of siRNAs and in DNA methylation-dependent silencing of endogenous repeated sequences. Pol V is composed of subunits that are paralogous or identical to the 12 subunits of Pol II. Two large subunits comprise the most conserved portion including the catalytic site and share similarity with other eukaryotic and bacterial multisubunit RNA polymerases. The second largest subunit is also found in RNA polymerase IVa, while the largest subunit is found only in the IVa complex and contains an extended C-terminal domain (CTD) that includes multiple repeats of a 16 amino-acid consensus sequence as well as other sequences. The remainder of the complex is composed of smaller subunits. 2
GO:0032144 4-aminobutyrate transaminase complex A homodimeric protein complex that possesses 4-aminobutyrate transaminase activity. 2
GO:0032116 SMC loading complex A protein complex required for the loading of a structural maintenance of chromosome (SMC) complex, such as cohesin, condensin or SMC5/SMC6, onto DNA. Appears to be eukaryotically conserved. 2
GO:0042719 mitochondrial intermembrane space protein transporter complex Soluble complex of the mitochondrial intermembrane space composed of various combinations of small Tim proteins; acts as a protein transporter to guide proteins to the Tim22 complex for insertion into the mitochondrial inner membrane. 2
GO:0097373 MCM core complex A protein complex that contains Mcm4, Mcm6, and Mcm7 proteins, and possesses DNA helicase activity. In the heterohexameric MCM complex, the Mcm4/6/7 proteins form a stable core, and Mcm2, Mcm3, and Mcm5 are more peripherally associated. 2
GO:0002944 cyclin K-CDK12 complex A protein complex consisting of cyclin Kand cyclin-dependent kinase 12 (CDK12). Cyclins are characterized by periodicity in protein abundance throughout the cell cycle. Cyclin-dependent kinases represent a family of serine/threonine protein kinases that become active upon binding to a cyclin regulatory partner. 2
GO:0055087 Ski complex A protein complex that regulates RNA degradation by the exosome complex. In Saccharomyces the complex has a heterotetrameric stoichiometry consisting of one copy each of Ski2p and Ski3 and two copies of Ski8p. 2
GO:0030125 clathrin vesicle coat A clathrin coat found on a vesicle. 2
GO:0071595 Nem1-Spo7 phosphatase complex A protein serine/threonine phosphatase complex that is involved in nuclear envelope organization, and contains proteins known in budding yeast as Nem1p and Spo7p. 2
GO:0032389 MutLalpha complex A heterodimer involved in the recognition of base-base and small insertion/deletion mismatches. In human the complex consists of two subunits, MLH1 and PMS2. 2
GO:0042105 alpha-beta T cell receptor complex A T cell receptor complex in which the TCR heterodimer comprises alpha and beta chains, associated with the CD3 complex; recognizes a complex consisting of an antigen-derived peptide bound to a class I or class II MHC protein. 2
GO:0070603 SWI/SNF superfamily-type complex A protein complex that contains an ortholog of the Saccharomyces ATPase Swi2/Snf2 as one of the core components and mediates assembly of nucleosomes, changes to the spacing or structure of nucleosomes, or some combination of those activities in a manner that requires ATP. 2
GO:0033185 dolichol-phosphate-mannose synthase complex A protein complex that possesses dolichyl-phosphate beta-D-mannosyltransferase activity; contains a catalytic subunit, a regulatory subunit, and a third subunit that stabilizes the complex. In human and several other metazoa, the subunits are named DPM1, DPM2 and DPM3, respectively. 2
GO:0033176 proton-transporting V-type ATPase complex A proton-transporting two-sector ATPase complex that couples ATP hydrolysis to the transport of protons across a concentration gradient. The resulting transmembrane electrochemical potential of H+ is used to drive a variety of (i) secondary active transport systems via H+-dependent symporters and antiporters and (ii) channel-mediated transport systems. The complex comprises a membrane sector (V0) that carries out proton transport and a cytoplasmic compartment sector (V1) that catalyzes ATP hydrolysis. V-type ATPases are found in the membranes of organelles such as vacuoles, endosomes, and lysosomes, and in the plasma membrane. 2
GO:0072557 IPAF inflammasome complex A protein complex that consists of three components, IPAF, NAIP and caspase-1, and includes among its functions the sensing of flagellin derived from Legionella pneumophila, Salmonella typhimurium, Pseudomonas aeruginosa and Shigella flexneri. 2
GO:0033565 ESCRT-0 complex A protein complex required for the recycling of Golgi proteins, formation of lumenal membranes and sorting of ubiquitinated proteins into those membranes. This complex includes Vps1p and Hse1p in yeast and the Hrs and STAM proteins in mammals. 2
GO:0005853 eukaryotic translation elongation factor 1 complex A multisubunit nucleotide exchange complex that binds GTP and aminoacyl-tRNAs, and catalyzes their codon-dependent placement at the A-site of the ribosome. In humans, the complex is composed of four subunits, alpha, beta, delta and gamma. 2
GO:0002144 cytosolic tRNA wobble base thiouridylase complex A complex of two proteins involved in the thiolation of U34 in glutamate, lysine, and glutamine tRNAs of eukaryotes. 2
GO:0031597 cytosolic proteasome complex A proteasome complex found in the cytosol of a cell. 2
GO:0045271 respiratory chain complex I Respiratory chain complex I is an enzyme of the respiratory chain. It consists of several polypeptide chains and is L-shaped, with a horizontal arm lying in the membrane and a vertical arm that projects into the matrix. The electrons of NADH enter the chain at this complex. 2
GO:0070438 mTOR-FKBP12-rapamycin complex A protein complex that contains the mTOR (mammalian target of rapamycin) serine/threonine kinase, the peptidyl-prolyl cis-trans isomerase FKBP12 (FKBP1A) and rapamycin (sirolimus). 2
GO:0008232 activator ecdysone receptor complex A protein complex consisting of a heterodimer of Ecdysone receptor (EcR) and ultraspiracle (usp) bound to the ligand ecdysone, which activates transcription of target genes. 2
GO:0008622 epsilon DNA polymerase complex A heterotetrameric DNA polymerase complex that catalyzes processive DNA synthesis in the absence of PCNA, but is further stimulated in the presence of PCNA. The complex contains a large catalytic subunit and three small subunits, and is best characterized in Saccharomyces, in which the subunits are named Pol2p, Dpb2p, Dpb3p, and Dpb4p. Some evidence suggests that DNA polymerase epsilon is the leading strand polymerase; it is also involved in nucleotide-excision repair and mismatch repair. 2
GO:0000418 DNA-directed RNA polymerase IV complex RNA polymerase IV is a multisubunit RNA polymerase complex found in the nucleus of plants and involved in accumulation of siRNAs and in DNA methylation-dependent silencing of endogenous repeated sequences. Pol IV is composed of subunits that are paralogous or identical to the 12 subunits of Pol II. The largest and second-largest subunits of Pol IV are the catalytic subunits and share similarity with the corresponding subunits of other eukaryotic and bacterial multisubunit RNA polymerases. The second largest subunit is also found in RNA polymerase V, while the largest subunit is found only in RNAP IV complex. 2
GO:0070557 PCNA-p21 complex A protein complex that contains the cyclin-dependent protein kinase inhibitor p21WAF1/CIP1 bound to PCNA; formation of the complex inhibits DNA replication. 2
GO:0035189 Rb-E2F complex A multiprotein complex containing a heterodimeric E2F transcription factor and a Retinoblastoma (Rb) family member. This complex is capable of repressing transcription of E2F-regulated genes in order to regulate cell cycle progression. 2
GO:0030992 intraflagellar transport particle B The larger subcomplex of the intraflagellar transport particle; characterized complexes have molecular weights around 550 kDa. 2
GO:0034707 chloride channel complex An ion channel complex through which chloride ions pass. 2
GO:0033588 Elongator holoenzyme complex A heterohexameric protein complex that is involved in modification of wobble nucleosides in tRNA, and exerts direct effects on transcriptional elongation and exocytosis. The complex can associate physically with hyperphosphorylated RNA polymerase II; it contains two discrete heterotrimeric subcomplexes. 2
GO:0002945 cyclin K-CDK13 complex A protein complex consisting of cyclin Kand cyclin-dependent kinase 13 (CDK13). Cyclins are characterized by periodicity in protein abundance throughout the cell cycle. Cyclin-dependent kinases represent a family of serine/threonine protein kinases that become active upon binding to a cyclin regulatory partner. 2
GO:0071986 Ragulator complex A protein complex that contains MAPKSP1 (MP1, Map2k1ip1), ROBLD3 (p14, Mapbpip), and C11orf59 (p18). The complex is anchored to lipid rafts in late endosome membranes via C11orf59, recruits mTORC1 to lysosomal membranes in amino acid signaling to mTORC1, and is also involved in ERK/MAPK signaling. 2
GO:0035976 AP1 complex A heterodimeric transcription factor complex composed of proteins from the c-Fos, c-Jun, activating transcription factor (ATF) or JDP families. The subunits contain a basic leucine zipper (bZIP) domain that is essential for dimerization and DNA binding. Jun-Fos heterodimers bind preferentially to a heptamer consensus sequence (TPA responsive element (TRE)), whereas Jun-ATF dimers bind the cyclic AMP responsive element (CRE) to regulate transcription of target genes. 2
GO:0008280 cohesin core heterodimer The core heterodimer of a cohesin complex; a structure required for sister chromatid cohesion in eukaryotes. 2
GO:0017087 mitochondrial processing peptidase complex A protein complex that consists of a catalytic alpha subunit (alpha-MPP) and a regulatory beta subunit (beta-MPP), and catalyzes the release of N-terminal targeting peptides from precursor proteins imported into the mitochondrion. 2
GO:0005731 nucleolus organizer region A region of a chromosome where nucleoli form during interphase, and where genes encoding the largest rRNA precursor transcript are tandemly arrayed. 2
GO:0030015 CCR4-NOT core complex The core of the CCR4-NOT complex. In Saccharomyces the CCR4-NOT core complex comprises Ccr4p, Caf1p, Caf40p, Caf130p, Not1p, Not2p, Not3p, Not4p, and Not5p. 2
GO:0030897 HOPS complex A multimeric protein complex that associates with the vacuolar membrane and is involved in homotypic vacuole fusion and vacuole protein sorting. For example, the Saccharomyces complex contains Vps41p, Vam6p, Pep5p, Vps16p, Pep3p, and Vps33p. 2
GO:0031942 i-AAA complex Protease complex of the mitochondrial inner membrane whose catalytic residues lie on the intermembrane space side of the inner membrane; involved in mitochondrial protein turnover. Contains a subunit belonging to the AAA family of ATP-dependent metalloproteases. 2
GO:0016507 mitochondrial fatty acid beta-oxidation multienzyme complex A complex that includes the long-chain 3-hydroxyacyl-CoA dehydrogenase and long-chain enoyl-CoA hydratase activities in two subunits (alpha and beta), catalyzing two steps of the fatty acid beta-oxidation cycle within the mitochondrial matrix. 2
GO:0009319 cytochrome o ubiquinol oxidase complex A protein complex that possesses cytochrome o ubiquinol oxidase activity; consists of four polypeptide subunits and associated prosthetic groups. 2
GO:0005850 eukaryotic translation initiation factor 2 complex Complex of three heterogeneous polypeptide chains, that form a ternary complex with initiator methionyl-tRNA and GTP. This ternary complex binds to free 40S subunit, which subsequently binds the 5' end of mRNA. 2
GO:0043540 6-phosphofructo-2-kinase/fructose-2,6-biphosphatase 1 complex A homodimeric, bifunctional enzyme complex which catalyzes the synthesis and degradation of fructose 2,6-bisphosphate, and is required for both glycolysis and gluconeogenesis. 2
GO:0046695 SLIK (SAGA-like) complex A SAGA-type histone acetyltransferase complex that contains Rtg2 and a smaller form of Spt7 than the fungal SAGA complex, and lacks Spt8. The complex is involved in the yeast retrograde response pathway, which is important for gene expression changes during mitochondrial dysfunction. 2
GO:0016035 zeta DNA polymerase complex A heterodimeric DNA polymerase complex that catalyzes error-prone DNA synthesis in contexts such as translesion synthesis and double-stranded break repair. First characterized in Saccharomyces, in which the subunits are Rev3p and Rev7p; a third protein, Rev1p, is often associated with the polymerase dimer. 2
GO:0005608 laminin-3 complex A laminin complex composed of alpha1, beta2 and gamma1 polypeptide chains. 2
GO:0043527 tRNA methyltransferase complex A multimeric protein complex involved in the methylation of specific nucleotides in tRNA. 1
GO:0070369 beta-catenin-TCF7L2 complex A protein complex that contains beta-catenin and TCF7L2 (TCF4), binds to the TCF DNA motif within a promoter element, and is involved in the regulation of WNT target gene transcription. 1
GO:0005606 laminin-1 complex A laminin complex composed of alpha1, beta1 and gamma1 polypeptide chains. 1
GO:0005965 protein farnesyltransferase complex A protein complex that possesses protein farnesyltransferase activity. 1
GO:0008352 katanin complex A complex possessing an activity that couples ATP hydrolysis to the severing of microtubules; usually a heterodimer comprising a catalytic subunit (often 60kDa) and a regulatory subunit (often 80 kDa). 1
GO:0017177 glucosidase II complex A heterodimeric complex that catalyzes the trimming of glucose residues from N-linked core glycans on newly synthesized glycoproteins. 1
GO:0031522 cell envelope Sec protein transport complex A transmembrane protein complex involved in the translocation of proteins across the cytoplasmic membrane. In Gram-negative bacteria, Sec-translocated proteins are subsequently secreted via the type II, IV, or V secretion systems. Sec complex components include SecA, D, E, F, G, Y and YajC. 1
GO:0005760 gamma DNA polymerase complex A DNA polymerase complex consisting of a large subunit, responsible for the catalytic activities, and a small accessory subunit. Functions in the replication and repair of mitochondrial DNA. 1
GO:0070531 BRCA1-A complex A protein complex that contains the BRCA1-BARD1 heterodimer, RAP80/UIMC1, BRCC3/BRCC36, BRE/BRCC45, FAM175A/CCDC98/Abraxas and MERIT40/NBA1, and specifically recognizes and binds K63-linked polyubiquitin chains present on histone H2A and H2AX at DNA damage sites. 1
GO:0043257 laminin-8 complex A laminin complex composed of alpha4, beta1 and gamma1 polypeptide chains. 1
GO:0036087 glutathione synthase complex A protein complex composed of two or more polypeptide subunits, and which possesses glutathione synthase activity (catalysis of the reaction: L-gamma-glutamyl-L-cysteine + ATP + glycine = ADP + glutathione + 2 H(+) + phosphate). In eukaryotes, the complex is homodimeric, in E. coli glutathione synthase exists as a tetramer, and in S. pombe the complex exists as a homodimer or a heterotetramer. 1
GO:0009331 glycerol-3-phosphate dehydrogenase complex An enzyme complex that catalyzes the dehydrogenation of sn-glycerol 3-phosphate to form glycerone phosphate. 1
GO:0019815 B cell receptor complex An immunoglobulin complex that is present in the plasma membrane of B cells and that in its canonical form is composed of two identical immunoglobulin heavy chains and two identical immunoglobulin light chains and a signaling subunit, a heterodimer of the Ig-alpha and Ig-beta proteins. 1
GO:0009376 HslUV protease complex A protein complex that possesses ATP-dependent protease activity; consists of an ATPase large subunit with homology to other Clp family ATPases and a peptidase small subunit related to the proteasomal beta-subunits of eukaryotes. In the E. coli complex, six identical subunits of both the ATPase, ClpY, and the protease, ClpQ, self-assemble into an oligomeric ring, and two rings of each subunit, two ClpQ rings surrounded by single ClpY rings, form a dumbbell-shaped complex. 1
GO:0030964 NADH dehydrogenase complex An integral membrane complex that possesses NADH oxidoreductase activity. The complex is one of the components of the electron transport chain. It catalyzes the transfer of a pair of electrons from NADH to a quinone. 1
GO:0030870 Mre11 complex Trimeric protein complex that possesses endonuclease activity; involved in meiotic recombination, DNA repair and checkpoint signaling. In Saccharomyces cerevisiae, the complex comprises Mre11p, Rad50p, and Xrs2p; complexes identified in other species generally contain proteins orthologous to the Saccharomyces cerevisiae proteins. 1
GO:0016935 glycine-gated chloride channel complex A protein complex that forms a transmembrane channel through which chloride ions may pass in response to glycine binding to the channel complex or one of its constituent parts. 1
GO:0030993 axonemal heterotrimeric kinesin-II complex A kinesin complex found in eukaryotic axonemes that contains two distinct plus end-directed kinesin motor proteins and at least one accessory subunit, and that functions in the anterograde transport of molecules (cargo) from the basal body to the distal tip of the axoneme. 1
GO:0000441 SSL2-core TFIIH complex A complex which is part of both the general transcription factor TFIIH and the nucleotide-excision repair factor 3 complex. It is composed of the tightly associated 5 subunit core TFIIH subcomplex plus one additional, more loosely associated subunit. The subunits are well conserved from yeast to humans. In S. cerevisiae, the 5-subunit core is composed of Rad3, Tfb1, Tfb2, Ssl1, Tfb4 and the loosely associated subunit is Ssl2p (also called Rad25). In humans, the 5 subunit core is composed of ERCC2, p62, p55, p44, p34 and the loosely associated subunit is XPB. 1
GO:0045323 interleukin-1 receptor complex A protein complex that binds interleukin-1; comprises an alpha and a beta subunit. 1
GO:0005673 transcription factor TFIIE complex A transcription factor which in humans consists of a complex of two alpha and two beta chains. Recruits TFIIH to the initiation complex and helps activate both RNA polymerase II and TFIIH. 1
GO:0002169 3-methylcrotonyl-CoA carboxylase complex, mitochondrial A heterodimeric complex having 3-methylcrotonyl-CoA carboxylase activity. The alpha subunit has a covalently bound biotin essential for the ATP-dependent carboxylation. The beta subunit possess carboxyltransferase activity which presumably is essential for binding to 3-methylcrotonyl-CoA. 1
GO:0097255 R2TP complex A highly conserved protein complex comprised of two ATP-dependent DNA helicases (Rvb1p and Rvb2p in yeast, Pontin52 and Reptin52 in humans), Pih1p in yeast or PIH1D1 in humans, and Tah1 in yeast or RPAP3 in humans. The complex associates with Hsp90 and is thought to have a role in assembly of large protein or protein/nucleic acid complexes. In this role it is involved in multiple processes such as box C/D snoRNP biogenesis, phosphatidylinositol-3 kinase-related protein kinase (PIKK) signaling, RNA polymerase II assembly, and others. 1
GO:0030895 apolipoprotein B mRNA editing enzyme complex Protein complex that mediates editing of the mRNA encoding apolipoprotein B; catalyzes the deamination of C to U (residue 6666 in the human mRNA). Contains a catalytic subunit, APOBEC-1, and other proteins (e.g. human ASP; rat ASP and KSRP). 1
GO:0034705 potassium channel complex An ion channel complex through which potassium ions pass. 1
GO:0071818 BAT3 complex An ER membrane insertion complex that acts by facilitating tail-anchored protein capture by ASNA1/TRC40. In mammals the complex contains Bat3, TRC35 and Ubl4A. 1
GO:0005662 DNA replication factor A complex A conserved heterotrimeric complex that binds nonspecifically to single-stranded DNA and is required for multiple processes in eukaryotic DNA metabolism, including DNA replication, DNA repair, and recombination. In all eukaryotic organisms examined the complex is composed of subunits of approximately 70, 30, and 14 kDa. 1
GO:0031461 cullin-RING ubiquitin ligase complex Any ubiquitin ligase complex in which the catalytic core consists of a member of the cullin family and a RING domain protein; the core is associated with one or more additional proteins that confer substrate specificity. 1
GO:0000214 tRNA-intron endonuclease complex A protein complex that catalyzes the endonucleolytic cleavage of pre-tRNA, producing 5'-hydroxyl and 2',3'-cyclic phosphate termini, and specifically removing the intron. 1
GO:0034271 phosphatidylinositol 3-kinase complex I A protein complex that posseses phosphatidylinositol 3-kinase activity and is involved in autophagy. In budding yeast, this complex consists of Vps30p, Vps34p, Atg14p and Vps15p. 1
GO:0005849 mRNA cleavage factor complex Any macromolecular complex involved in cleavage or polyadenylation of mRNA molecules. 1
GO:0097057 TRAF2-GSTP1 complex A protein complex comprising tumor necrosis factor (TNF) receptor-associated factor 2 (TRAF2) and glutathione S-transferase pi 1 (GSTP1). This complex is thought to disrupt the TNF signaling cascade, thus down-regulating inflammatory responses. 1
GO:0005785 signal recognition particle receptor complex A transmembrane heterodimeric protein located in the membrane of the rough endoplasmic reticulum. Both subunits contain GTPase domains with which signal recognition particle interacts. In the presence of GTP and SRP receptor, SRP is released from the ribosome-nascent chain complex. 1
GO:0031422 RecQ helicase-Topo III complex A complex containing a RecQ family helicase and a topoisomerase III homologue; may also include one or more additional proteins; conserved from E. coli to human. 1
GO:0071261 Ssh1 translocon complex A translocon complex that contains a core heterotrimer of alpha, beta and gamma subunits, and may contain additional proteins (translocon-associated proteins or TRAPs); in budding yeast the core proteins are Ssh1p, Sbh2p, and Sss1p. The Ssh1 translocon complex is involved in the cotranslational pathway of protein transport across the ER membrane, and recognizes proteins bearing strongly hydrophobic signal sequences. 1
GO:0090443 FAR/SIN/STRIPAK complex A conserved protein phosphatase type 2A complex which contains a protein phosphatase type 2A, a protein phosphatase regulatory subunit, a striatin, an FHA domain protein and other subunits (at least six proteins). In fission yeast this complex negatively regulate the septation initiation network at the spindle pole body. 1
GO:0009336 sulfate adenylyltransferase complex (ATP) An enzyme complex that catalyzes the formation adenylylsulfate from sulfate and ATP. 1
GO:0044665 MLL1/2 complex A protein complex that can methylate lysine-4 of histone H3, and which contains either of the protein subunits MLL1 or MLL2 in human, or equivalent in other species. 1
GO:0005953 CAAX-protein geranylgeranyltransferase complex A heterodimeric enzyme, composed of an alpha and a beta subunit. Participates in the post-translational C-terminal modification of several small GTPases, allowing their targeting to the membrane. 1
GO:0017119 Golgi transport complex A complex of proteins that, in vitro, stimulates intra-Golgi transport; a 13S complex, about 800 kDa in size and consists of at least five polypeptides. In yeast, this complex is called the Sec34/35 complex and is composed of eight subunits (Sec34p, Sec35p, Dor1p, Cod1p, Cod2p, Cod3p, Cod4p, and Cod5p). 1
GO:0032301 MutSalpha complex A heterodimer involved in the recognition and repair of base-base and small insertion/deletion mismatches. In human the complex consists of two subunits, MSH2 and MSH6. 1
GO:0032302 MutSbeta complex A heterodimer involved in binding to and correcting insertion/deletion mutations. In human the complex consists of two subunits, MSH2 and MSH3. 1
GO:0070274 RES complex A protein complex that is required for efficient splicing, and prevents leakage of unspliced pre-mRNAs from the nucleus (named for pre-mRNA REtention and Splicing). In Saccharomyces, the complex consists of Ist3p, Bud13p, and Pml1p. 1
GO:0000408 EKC/KEOPS complex A protein complex proposed to be involved in transcription as well as promoting telomere uncapping and telomere elongation. For example, in Saccharomyces cerevisiae the complex contains Bud32p, Kae1p, Gon7p, Cgi121p, and Pcc1p. 1
GO:0035059 RCAF complex A protein complex that facilitates the assembly of nucleosomes on to newly synthesized DNA. In Drosophila, the complex comprises ASF1 and histones H3 and H4. 1
GO:0008287 protein serine/threonine phosphatase complex A complex, normally consisting of a catalytic and a regulatory subunit, which catalyzes the removal of a phosphate group from a serine or threonine residue of a protein. 1
GO:0033256 I-kappaB/NF-kappaB complex A protein complex containing an inhibitory-kappaB (I-kappaB/IKB) protein and one or more copies of an NF-kappaB protein. In the resting state, NF-kappaB dimers are bound to I-kappaB proteins, sequestering NF-kappaB in the cytoplasm. 1
GO:0005745 m-AAA complex Protease complex of the mitochondrial inner membrane that is involved in mitochondrial protein turnover and in processing of proteins imported into mitochondria. 1
GO:0000942 condensed nuclear chromosome outer kinetochore The region of a condensed nuclear chromosome kinetochore most external to centromeric DNA; this outer region mediates kinetochore-microtubule interactions. 1
GO:0033179 proton-transporting V-type ATPase, V0 domain A protein complex that forms part of a proton-transporting V-type ATPase and mediates proton transport across a membrane. The V0 complex consists of at least four different subunits (a,c,d and e); six or more c subunits form a proton-binding rotor ring. 1
GO:0034272 phosphatidylinositol 3-kinase complex II A protein complex that posseses phosphatidylinositol 3-kinase activity and is involved in vacuolar protein sorting (VPS) via endosomes. In budding yeast, this complex consists of Vps30p, Vps34p, VPS38 and Vps15p. 1
GO:0009328 phenylalanine-tRNA ligase complex An enzyme complex that catalyzes the ligation of phenylalanine to tRNA(Phe), forming L-phenylalanyl-tRNA(Phe). 1
GO:0017059 serine C-palmitoyltransferase complex An enzyme complex that catalyzes the transfer of a palmitoyl on to serine, forming 3-dehydro-D-sphinganine. 1
GO:0033100 NuA3 histone acetyltransferase complex A Gcn5-independent multisubunit complex that catalyzes the acetylation of histone H3. The budding yeast complex includes Sas3p, Taf30p, and Yng1p. 1
GO:0071665 gamma-catenin-TCF7L2 complex A protein complex that contains gamma-catenin and TCF7L2 (TCF4), binds to the TCF DNA motif within a promoter element, and is involved in the regulation of WNT target gene transcription. 1
GO:0017086 3-methyl-2-oxobutanoate dehydrogenase (lipoamide) complex A protein complex that catalyzes the reaction 3-methyl-2-oxobutanoate + lipoamide = S-(2-methylpropanoyl)-dihydrolipoamide + carbon dioxide (CO2). This requires thiamine diphosphate; the enzyme also acts on (S)-3-methyl-2-oxopentanoate and 4-methyl-2-oxo-pentanoate. 1
GO:0033557 Slx1-Slx4 complex A heterodimeric protein complex that possesses an endonuclease activity that specifically cleaves certain types of branched DNA structures; because such structures often form during the replication ribosomal DNA (rDNA) repeats, the complex plays a role in the maintenance of rDNA. The subunits are known as Slx1 and Slx 4 in budding and fission yeasts, and are conserved in eukaryotes. 1
GO:0031080 nuclear pore outer ring A subcomplex of the nuclear pore complex (NPC) that forms the outer rings of the core scaffold, a lattice-like structure that gives the NPC its shape and strength. In S. cerevisiae, the two outer rings each contain multiple copies of the following proteins: Nup133p, Nup120p, Nup145Cp, Nup85p, Nup84p, Seh1p, and Sec13p. In vertebrates, the two outer rings each contain multiple copies of the following proteins: Nup133, Nup160, Nup96, Nup75, Nup107, Seh1, Sec13, Nup43, Nup37, and ALADIN. Components are arranged in 8-fold symmetrical 'spokes' around the central transport channel. A single 'spoke', can be isolated and is sometimes referred to as the Nup84 complex (S. cerevisiae) or the Nup107-160 complex (vertebrates). 1
GO:0005873 plus-end kinesin complex Any complex that includes a dimer of molecules from the kinesin superfamily and any associated proteins, and moves towards the plus end of a microtubule. 1
GO:0005838 proteasome regulatory particle A multisubunit complex, which caps one or both ends of the proteasome core complex. This complex recognizes and unfolds ubiquitinated proteins, and translocates them to the proteasome core complex. 1
GO:0032299 ribonuclease H2 complex A protein complex that possesses ribonuclease H activity, in which the catalytic subunit is a member of the RNase H2 (or HII) class. For example, in Saccharomyces the complex contains Rnh201p, Rnh202p and Rnh203p. 1
GO:0005889 hydrogen:potassium-exchanging ATPase complex A protein complex that possesses hydrogen:potassium-exchanging ATPase activity; characterized in animal cells, where it maintains ionic gradients of Na+ and K+ at the expense of ATP hydrolysis; The complex contains two obligatory subunits, the catalytic alpha subunit and a glycosylated beta subunit; two additional subunits, gamma and channel-inducing factor (CHIF), may also be present. 1
GO:0055029 nuclear DNA-directed RNA polymerase complex A protein complex, located in the nucleus, that possesses DNA-directed RNA polymerase activity. 1
GO:0005607 laminin-2 complex A laminin complex composed of alpha2, beta1 and gamma1 polypeptide chains. 1
GO:0043260 laminin-11 complex A laminin complex composed of alpha5, beta2 and gamma1 polypeptide chains. 1
GO:0009523 photosystem II A photosystem that contains a pheophytin-quinone reaction center with associated accessory pigments and electron carriers. In cyanobacteria and chloroplasts, in the presence of light, PSII functions as a water-plastoquinone oxidoreductase, transferring electrons from water to plastoquinone, whereas other photosynthetic bacteria carry out anoxygenic photosynthesis and oxidize other compounds to re-reduce the photoreaction center. 1
GO:0048269 methionine adenosyltransferase complex A multimeric enzyme complex composed of variable numbers of catalytic alpha subunits, and noncatalytic beta subunits. The beta subunits are believed to have a regulatory function. The enzyme complex catalyzes the synthesis of S-adenosylmethionine (AdoMet), which is the major methyl group donor, participating in the methylation of proteins, DNA, RNA, phospholipids, and other small molecules. 1
GO:0071513 phosphopantothenoylcysteine decarboxylase complex A protein complex that catalyzes decarboxylation of 4'-phosphopantothenoylcysteine to yield 4'-phosphopantetheine; this is the third step in the biosynthesis of Coenzyme A. The complex is homotrimeric in many eukaryotes, but is a heterotrimer in Saccharomyces. 1
GO:0000814 ESCRT II complex An endosomal sorting complex required for transport and functions downstream of ESCRT I complex. It consists of the class E vacuolar protein sorting (Vps) proteins and is required for the membrane recruitment of ESCRT III complex and binds to ubiquitinated cargoes. 1
GO:0043529 GET complex A multisubunit complex involved in ER/Golgi trafficking (Golgi to ER Traffic). In yeast, includes Get1p, Get2p and Get3p proteins. 1
GO:0000111 nucleotide-excision repair factor 2 complex One of several protein complexes involved in nucleotide-excision repair; possesses damaged DNA binding activity. In S. cerevisiae, it is composed of Rad4p and Rad23p. 1
GO:0070695 FHF complex A protein complex that is composed of AKTIP/FTS, FAM160A2/p107FHIP, and one or more members of the Hook family of proteins, HOOK1, HOOK2, and HOOK3. The complex is thought to promote vesicle trafficking and/or fusion, and associates with the homotypic vesicular sorting complex (the HOPS complex). 1
GO:0031499 TRAMP complex A multiprotein complex having distributive polyadenylation activity of a variety of RNA substrates including hypomodified and incorrectly folded tRNAs, pre-snRNAs, pre-snoRNAs, incorrectly spliced or processed pre-mRNAs, cryptic unstable transcripts (CUTs), pre-rRNAs and rRNA fragments released as part of rRNA processing. In S. cerevisiae, the complex consists of either Pap2 (also known as Trf4) or Trf5, Air1 or Air2, and Mtr4, and is involved in RNA 3'-end processing and in RNA surveillance and quality control. 1
GO:0045261 proton-transporting ATP synthase complex, catalytic core F(1) The sector of a hydrogen-transporting ATP synthase complex in which the catalytic activity resides; it comprises the catalytic core and central stalk, and is peripherally associated with a membrane, such as the plasma membrane or the mitochondrial inner membrane, when the entire ATP synthase is assembled. 1
GO:0009361 succinate-CoA ligase complex (ADP-forming) A heterodimeric enzyme complex, composed of an alpha and beta chain, most usually found in (but not limited to) bacteria. Functions in the TCA cycle, hydrolyzing succinyl-CoA into succinate and CoA, thereby forming ATP. 1
GO:0031416 NatB complex A conserved complex that catalyzes the transfer of an acetyl group to the N-terminal residue of a protein acceptor molecule that has a Met-Glu, Met-Asp, Met-Asn, or Met-Met N-terminus. In Saccharomyces the complex includes Nat3p and Mdm20p. 1
GO:0097149 centralspindlin complex A heterotetrameric protein complex playing a key role in the formation of the central spindle in mitosis. Made up of two molecules each of a mitotic kinesin (ZEN-4 in Caenorhabditis elegans or MKLP1 in mammals) and of two molecules each of a GTPase activating protein (GAP) factor (CYK-4 in Caenorhabditis elegans or MgcRacGAP in mammals). 1
GO:0034657 GID complex A protein complex with ubiquitin ligase activity that is involved in proteasomal degradation of fructose-1,6-bisphosphatase (FBPase) and phosphoenolpyruvate carboxykinase during the transition from gluconeogenic to glycolytic growth conditions. In S. cerevisiae, the GID (Glucose Induced degradation Deficient) complex consists of Vid30p, Rmd5p, Vid24p, Vid28p, Gid7p, Gid8p, and Fyv10p. 1
GO:0034973 Sid2-Mob1 complex A protein complex that contains a protein kinase (Sid2 in S. pombe) and its regulatory subunit (Mob1). The Sid2p-Mob1p kinase complex is a component of the septation initiation network in fission yeast (called the mitotic exit network in S. cerevisiae) and is required for cytokinesis. The analogous complex in S. cerevisiae is called Dbf2p-Mob1p complex. 1
GO:0005958 DNA-dependent protein kinase-DNA ligase 4 complex A large protein complex which is involved in the repair of DNA double-strand breaks and, in mammals, V(D)J recombination events. It consists of the DNA-dependent protein kinase catalytic subunit (DNA-PKcs), the DNA end-binding heterodimer Ku, the nuclear phosphoprotein XRCC4 or a homolog thereof, and DNA ligase IV. 1
GO:0043625 delta DNA polymerase complex A multimeric DNA polymerase enzyme complex which differs in composition amongst species; in humans it is a heterotetramer of four subunits of approximately 125, 50, 68 and 12kDa, while in S. cerevisiae, it has three different subunits which form a heterotrimer, and the active enzyme is a dimer of this heterotrimer. Functions in DNA replication, mismatch repair and excision repair. 1
GO:1990023 mitotic spindle midzone The area in the center of the mitotic spindle where the spindle microtubules from opposite poles overlap. 1
GO:0005854 nascent polypeptide-associated complex A heterodimeric protein complex that can reversibly bind to ribosomes, and is located in direct proximity to newly synthesized polypeptide chains as they emerge from the ribosome. 1
GO:0009333 cysteine synthase complex Cysteine synthase is a multienzyme complex made up, in E. coli, of the heteromeric hexamer serine acetyltransferase and the homodimer O-acetylserine (thiol)-lyase A. 1
GO:0070435 Shc-EGFR complex A protein complex that contains the epidermal growth factor receptor (EGFR) and the adaptor protein Shc, and is involved in linking EGFR activation to the p21-Ras pathway. 1
GO:0017117 single-stranded DNA-dependent ATP-dependent DNA helicase complex A protein complex that possesses single-stranded DNA-dependent DNA helicase activity. 1
GO:0034456 UTP-C complex A protein complex that forms a subcomplex of the 90S preribosome. In S. cerevisiae, it is composed of Rrp7p, Utp22p, Ckb1p, Cka1p, Ckb2p and Cka2p. 1
GO:0032783 ELL-EAF complex A heterodimeric protein complex that acts as an RNA polymerase II elongation factor; the complex is conserved from yeast to humans, and is present in S. pombe, but absent from S. cerevisiae. 1
GO:0042575 DNA polymerase complex A protein complex that possesses DNA polymerase activity and is involved in template directed synthesis of DNA. 1
GO:0034678 alpha8-beta1 integrin complex An integrin complex that comprises one alpha8 subunit and one beta1 subunit. 1
GO:0000125 PCAF complex A large multiprotein complex that possesses histone acetyltransferase activity and is involved in regulation of transcription. The composition is similar to that of the SAGA complex, but includes fewer Spt and Ada proteins, and more TAFs. 1
GO:0045264 plasma membrane proton-transporting ATP synthase complex, coupling factor F(o) All non-F1 subunits of the plasma membrane hydrogen-transporting ATP synthase, including integral and peripheral plasma membrane proteins. 1
GO:0042720 mitochondrial inner membrane peptidase complex Protease complex of the mitochondrial inner membrane, consisting of at least two subunits, involved in processing of both nuclear- and mitochondrially-encoded proteins targeted to the intermembrane space. 1
GO:0034750 Scrib-APC-beta-catenin complex A protein complex that contains the Scribble protein (a cell polarity determinant), the tumor suppressor protein adenomatous polyposis coli (APC), and beta-catenin; may be involved in the control of cell proliferation. 1
GO:0005577 fibrinogen complex A highly soluble, elongated protein complex found in blood plasma and involved in clot formation. It is converted into fibrin monomer by the action of thrombin. In the mouse, fibrinogen is a hexamer, 46 nm long and 9 nm maximal diameter, containing two sets of nonidentical chains (alpha, beta, and gamma) linked together by disulfide bonds. 1
GO:0008623 CHRAC An ISWI complex that contains an ATPase subunit of the ISWI family (SNF2H in mammals, Isw2 in S. cerevisiae), an ACF1 homolog, and additional small histone fold subunits (generally two of these, but Xenopus has only one and some additional non-conserved subunits). CHRAC plays roles in the regulation of RNA polymerase II transcription and in DNA replication and repair. 1
GO:0000813 ESCRT I complex An endosomal sorting complex required for transport. It consists of the class E vacuolar protein sorting (Vps) proteins and interacts with ubiquitinated cargoes. 1
GO:0070552 BRISC complex A protein complex that contains the FAM175B/ABRO1, BRCC3/BRCC36, BRE/BRCC45 and MERIT40/NBA1 proteins, and specifically cleaves K63-linked polyubiquitin chains. 1
GO:0000152 nuclear ubiquitin ligase complex A ubiquitin ligase complex found in the nucleus. 1
GO:0034673 inhibin-betaglycan-ActRII complex A protein complex that consists of inhibin, type III transforming growth factor beta receptor (also known as betaglycan), and the type II activin receptor ActRII. The complex is thought to negatively regulate the activity of activin B. 1
GO:0031248 protein acetyltransferase complex A complex that catalyzes the transfer of an acetyl group to a protein acceptor molecule. 1
GO:0045095 keratin filament A filament composed of acidic and basic keratins (types I and II), typically expressed in epithelial cells. The keratins are the most diverse classes of IF proteins, with a large number of keratin isoforms being expressed. Each type of epithelium always expresses a characteristic combination of type I and type II keratins. 1
GO:0043626 PCNA complex A protein complex composed of three identical PCNA monomers, each comprising two similar domains, which are joined in a head-to-tail arrangement to form a homotrimer. Forms a ring-like structure in solution, with a central hole sufficiently large to accommodate the double helix of DNA. Originally characterized as a DNA sliding clamp for replicative DNA polymerases and as an essential component of the replisome, and has also been shown to be involved in other processes including Okazaki fragment processing, DNA repair, translesion DNA synthesis, DNA methylation, chromatin remodeling and cell cycle regulation. 1
GO:0005833 hemoglobin complex An iron-containing, oxygen carrying complex. In vertebrates it is made up of two pairs of associated globin polypeptide chains, each chain carrying a noncovalently bound heme prosthetic group. 1
GO:0000798 nuclear cohesin complex A cohesin complex required for cohesion between sister chromatids that remain in the nucleus. 1