Go terms map to parent GO term: GO:0016020   other membrane
GOID
Link to GO
 Functional Category Description Protein Count
link to
protein list
GO:0005886 plasma membrane The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. 9732
GO:0005774 vacuolar membrane The lipid bilayer surrounding the vacuole and separating its contents from the cytoplasm of the cell. 2582
GO:0016021 integral to membrane Penetrating at least one phospholipid bilayer of a membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. When used to describe a protein, indicates that all or part of the peptide sequence is embedded in the membrane. 1157
GO:0009535 chloroplast thylakoid membrane The pigmented membrane of a chloroplast thylakoid. An example of this component is found in Arabidopsis thaliana. 1082
GO:0005789 endoplasmic reticulum membrane The lipid bilayer surrounding the endoplasmic reticulum. 685
GO:0009705 plant-type vacuole membrane The lipid bilayer surrounding a vacuole that retains the same shape regardless of cell cycle phase. The membrane separates its contents from the cytoplasm of the cell. An example of this component is found in Arabidopsis thaliana. 589
GO:0005743 mitochondrial inner membrane The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae. 500
GO:0000139 Golgi membrane The lipid bilayer surrounding any of the compartments of the Golgi apparatus. 364
GO:0000329 fungal-type vacuole membrane The lipid bilayer surrounding a vacuole, the shape of which correlates with cell cycle phase. The membrane separates its contents from the cytoplasm of the cell. An example of this structure is found in Saccharomyces cerevisiae. 334
GO:0005741 mitochondrial outer membrane The outer, i.e. cytoplasm-facing, lipid bilayer of the mitochondrial envelope. 310
GO:0031965 nuclear membrane Either of the lipid bilayers that surround the nucleus and form the nuclear envelope; excludes the intermembrane space. 288
GO:0031090 organelle membrane The lipid bilayer surrounding an organelle. 280
GO:0005778 peroxisomal membrane The lipid bilayer surrounding a peroxisome. 220
GO:0044425 membrane part Any constituent part of a membrane, a double layer of lipid molecules that encloses all cells, and, in eukaryotes, many organelles; may be a single or double lipid bilayer; also includes associated proteins. 213
GO:0010008 endosome membrane The lipid bilayer surrounding an endosome. 201
GO:0045121 membrane raft Any of the small (10-200 nm), heterogeneous, highly dynamic, sterol- and sphingolipid-enriched membrane domains that compartmentalize cellular processes. Small rafts can sometimes be stabilized to form larger platforms through protein-protein and protein-lipid interactions. 175
GO:0009706 chloroplast inner membrane The inner, i.e. lumen-facing, lipid bilayer of the chloroplast envelope; also faces the chloroplast stroma. 173
GO:0030670 phagocytic vesicle membrane The lipid bilayer surrounding a phagocytic vesicle. 160
GO:0005765 lysosomal membrane The lipid bilayer surrounding the lysosome and separating its contents from the cell cytoplasm. 150
GO:0030176 integral to endoplasmic reticulum membrane Penetrating at least one phospholipid bilayer of an endoplasmic reticulum membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 144
GO:0005905 coated pit A part of the endomembrane system in the form of an invagination of a membrane upon which a clathrin coat forms, and that can be converted by vesicle budding into a clathrin-coated vesicle. Coated pits form on the plasma membrane, where they are involved in receptor-mediated selective transport of many proteins and other macromolecules across the cell membrane, in the trans-Golgi network, and on some endosomes. 127
GO:0031225 anchored to membrane Tethered to a membrane by a covalently attached anchor, such as a lipid group, that is embedded in the membrane. When used to describe a protein, indicates that none of the peptide sequence is embedded in the membrane. 123
GO:0032588 trans-Golgi network membrane The lipid bilayer surrounding any of the compartments that make up the trans-Golgi network. 113
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. 111
GO:0009707 chloroplast outer membrane The outer, i.e. cytoplasm-facing, lipid bilayer of the chloroplast envelope. 99
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. 93
GO:0019898 extrinsic to membrane Loosely bound to one surface of a membrane, but not integrated into the hydrophobic region. 90
GO:0055038 recycling endosome membrane The lipid bilayer surrounding a recycling endosome. 84
GO:0031307 integral to mitochondrial outer membrane Located such that some or all of the gene product itself penetrates at least one phospholipid bilayer of the mitochondrial outer membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 83
GO:0012506 vesicle membrane The lipid bilayer surrounding any membrane-bounded vesicle in the cell. 82
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. 78
GO:0031901 early endosome membrane The lipid bilayer surrounding an early endosome. 73
GO:0031966 mitochondrial membrane Either of the lipid bilayers that surround the mitochondrion and form the mitochondrial envelope. 70
GO:0030173 integral to Golgi membrane Located such that some or all of the gene product itself penetrates at least one phospholipid bilayer of the Golgi complex membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 64
GO:0031902 late endosome membrane The lipid bilayer surrounding a late endosome. 60
GO:0005753 mitochondrial proton-transporting ATP synthase complex A proton-transporting ATP synthase complex found in the mitochondrial membrane. 59
GO:0010009 external side of endosome membrane The external (cytoplasmic face) of an endosome membrane. 53
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. 52
GO:0005628 prospore membrane The prospore membrane is a double-membraned structure that extends from the cytoplasmic face of the spindle pole bodies to encompass the spindle pole bodies and the four nuclear lobes that are formed during meiosis. It helps isolate the meiotic nuclei from the cytoplasm during spore formation and serves as a foundation for the formation of the spore walls. An example of this component is found in Schizosaccharomyces pombe. 50
GO:0033116 endoplasmic reticulum-Golgi intermediate compartment membrane The lipid bilayer surrounding any of the compartments of the endoplasmic reticulum (ER)-Golgi intermediate compartment system. 47
GO:0034704 calcium channel complex An ion channel complex through which calcium ions pass. 46
GO:0031969 chloroplast membrane Either of the lipid bilayers that surround a chloroplast and form the chloroplast envelope. 44
GO:0030672 synaptic vesicle membrane The lipid bilayer surrounding a synaptic vesicle. 43
GO:0030061 mitochondrial crista Any of the inward folds of the mitochondrial inner membrane. Their number, extent, and shape differ in mitochondria from different tissues and organisms. They appear to be devices for increasing the surface area of the mitochondrial inner membrane, where the enzymes of electron transport and oxidative phosphorylation are found. Their shape can vary with the respiratory state of the mitochondria. 42
GO:0045211 postsynaptic membrane A specialized area of membrane facing the presynaptic membrane on the tip of the nerve ending and separated from it by a minute cleft (the synaptic cleft). Neurotransmitters across the synaptic cleft and transmit the signal to the postsynaptic membrane. 42
GO:0042651 thylakoid membrane The pigmented membrane of any thylakoid. 39
GO:0042175 nuclear outer membrane-endoplasmic reticulum membrane network The continuous network of membranes encompassing the nuclear outer membrane and the endoplasmic reticulum membrane. 39
GO:0042406 extrinsic to endoplasmic reticulum membrane Loosely bound to one surface of the endoplasmic reticulum membrane, but not integrated into the hydrophobic region. 39
GO:0031305 integral to mitochondrial inner membrane Located such that some or all of the gene product itself penetrates at least one phospholipid bilayer of the mitochondrial inner membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 37
GO:0030666 endocytic vesicle membrane The lipid bilayer surrounding an endocytic vesicle. 37
GO:0009517 PSII associated light-harvesting complex II Protein-pigment complex associated with photosystem II. 37
GO:0030658 transport vesicle membrane The lipid bilayer surrounding a transport vesicle. 36
GO:0032127 dense core granule membrane The lipid bilayer surrounding a dense core granule. 34
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). 34
GO:0071458 integral to cytosolic side of endoplasmic reticulum membrane Penetrating at least one phospholipid bilayer of the endoplasmic reticulum membrane, with the bulk of the gene product located on the side that faces the cytosol. 33
GO:0061202 clathrin-sculpted gamma-aminobutyric acid transport vesicle membrane The lipid bilayer surrounding a clathrin-sculpted gamma-aminobutyric acid transport vesicle. 33
GO:0031227 intrinsic to endoplasmic reticulum membrane Located in the endoplasmic reticulum membrane such that some covalently attached portion of the gene product, for example part of a peptide sequence or some other covalently attached group such as a GPI anchor, spans or is embedded in one or both leaflets of the membrane. 33
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. 33
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. 33
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. 31
GO:0002080 acrosomal membrane The membrane that surrounds the acrosomal lumen. The acrosome is a special type of lysosome in the head of a spermatozoon that contains acid hydrolases and is concerned with the breakdown of the outer membrane of the ovum during fertilization. 31
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. 30
GO:0009782 photosystem I antenna complex The antenna complex of photosystem I. A photosystem has two closely linked components, an antenna containing light-absorbing pigments and a reaction center. Each antenna contains one or more light-harvesting complexes (LHCs). 30
GO:0044455 mitochondrial membrane part Any constituent part of a mitochondrial membrane, either of the lipid bilayers that surround the mitochondrion and form the mitochondrial envelope. 30
GO:0032580 Golgi cisterna membrane The lipid bilayer surrounding any of the thin, flattened compartments that form the central portion of the Golgi complex. 28
GO:0031314 extrinsic to mitochondrial inner membrane Loosely bound to one surface of the mitochondrial inner membrane, but not integrated into the hydrophobic region. 28
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. 28
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. 27
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. 25
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. 25
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. 23
GO:0031224 intrinsic to membrane Located in a membrane such that some covalently attached portion of the gene product, for example part of a peptide sequence or some other covalently attached group such as a GPI anchor, spans or is embedded in one or both leaflets of the membrane. 23
GO:0071556 integral to lumenal side of endoplasmic reticulum membrane Penetrating at least one phospholipid bilayer of the endoplasmic reticulum membrane, with the bulk of the gene product located on the side that faces the lumen. 23
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). 22
GO:0030659 cytoplasmic vesicle membrane The lipid bilayer surrounding a cytoplasmic vesicle. 22
GO:0009654 oxygen evolving complex A complex, composed of a cluster of manganese, calcium and chloride ions bound to extrinsic proteins, that catalyzes the splitting of water to O2 and 4 H+. In cyanobacteria there are five extrinsic proteins in OEC (PsbO, PsbP-like, PsbQ-like, PsbU and PsbV), while in plants there are only three (PsbO, PsbP and PsbQ). 22
GO:0000421 autophagic vacuole membrane The lipid bilayer surrounding an autophagic vacuole, a double-membrane-bounded vesicle in which endogenous cellular material is sequestered. 22
GO:0031315 extrinsic to mitochondrial outer membrane Loosely bound to one surface of the mitochondrial outer membrane, but not integrated into the hydrophobic region. 21
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. 20
GO:0031359 integral to chloroplast outer membrane Located such that some or all of the gene product itself penetrates at least one phospholipid bilayer of the chloroplast outer membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 20
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. 20
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. 20
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. 20
GO:0005779 integral to peroxisomal membrane Penetrating at least one phospholipid bilayer of a peroxisomal membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 19
GO:0033017 sarcoplasmic reticulum membrane The lipid bilayer surrounding the sarcoplasmic reticulum. 19
GO:0031301 integral to organelle membrane Penetrating at least one phospholipid bilayer of an organelle membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 18
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. 18
GO:0030095 chloroplast photosystem II An integral chloroplast membrane complex containing the P680 reaction center. In the light, PSII functions as a water-plastoquinone oxidoreductase, transferring electrons from water to plastoquinone. 18
GO:0009783 photosystem II antenna complex The antenna complex of photosystem II. A photosystem has two closely linked components, an antenna containing light-absorbing pigments and a reaction center. Each antenna contains one or more light-harvesting complexes (LHCs). 18
GO:0030660 Golgi-associated vesicle membrane The lipid bilayer surrounding a vesicle associated with the Golgi apparatus. 18
GO:0012510 trans-Golgi network transport vesicle membrane The lipid bilayer surrounding a vesicle transporting substances between the trans-Golgi network and other parts of the cell. 17
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. 16
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. 16
GO:0009528 plastid inner membrane The inner, i.e. lumen-facing, lipid bilayer of the plastid envelope; also faces the plastid stroma. 16
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. 15
GO:0031164 contractile vacuolar membrane The lipid bilayer surrounding the contractile vacuole. 15
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. 15
GO:0032592 integral to mitochondrial membrane Located such that some or all of the gene product itself penetrates at least one phospholipid bilayer of a mitochondrial membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 15
GO:0060203 clathrin-sculpted glutamate transport vesicle membrane The lipid bilayer surrounding a clathrin-sculpted glutamate transport vesicle. 14
GO:0060201 clathrin-sculpted acetylcholine transport vesicle membrane The lipid bilayer surrounding a clathrin-sculpted acetylcholine transport vesicle. 14
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. 14
GO:0070083 clathrin-sculpted monoamine transport vesicle membrane The lipid bilayer surrounding a clathrin-sculpted monoamine transport vesicle. 14
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. 14
GO:0010598 NAD(P)H dehydrogenase complex (plastoquinone) Complex that possesses NAD(P)H dehydrogenase (plastoquinone) activity. The complex is one of the components of the electron transport chain. It is involved in electron transport from an unidentified electron donor, possibly NADH, NADPH or ferredoxin(Fd) to the plastoquinone pool. 13
GO:0042170 plastid membrane Either of the lipid bilayers that surround a plastid and form the plastid envelope. 13
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. 13
GO:0097002 mitochondrial inner boundary membrane The portion of the mitochondrial inner membrane that is not invaginated to form cristae. The inner boundary membrane lies parallel to the outer membrane. 13
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. 13
GO:0005642 annulate lamellae Stacks of endoplasmic reticulum (ER) membranes containing a high density of nuclear pores, thought to form from excess nuclear membrane components, that have been described in a number of different cells. Annulate lamellar membranes are continuous with and embedded within the ER. 12
GO:0030868 smooth endoplasmic reticulum membrane The lipid bilayer surrounding the smooth endoplasmic reticulum. 12
GO:0031095 platelet dense tubular network membrane The lipid bilayer surrounding the platelet dense tubular network. 12
GO:0030669 clathrin-coated endocytic vesicle membrane The lipid bilayer surrounding a clathrin-coated endocytic vesicle. 12
GO:0031897 Tic complex The translocon of the inner envelope of chloroplasts, which facilitates the import of proteins across the chloroplast inner membrane. 12
GO:0033106 cis-Golgi network membrane The lipid bilayer surrounding any of the compartments that make up the cis-Golgi network. 11
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. 11
GO:0031304 intrinsic to mitochondrial inner membrane Located in the mitochondrial inner membrane such that some covalently attached portion of the gene product, for example part of a peptide sequence or some other covalently attached group such as a GPI anchor, spans or is embedded in one or both leaflets of the membrane. 11
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. 10
GO:0009527 plastid outer membrane The outer, i.e. cytoplasm-facing, lipid bilayer of the plastid envelope. 10
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. 10
GO:0005742 mitochondrial outer membrane translocase complex A large complex of the mitochondrial outer membrane that mediates transport of proteins into all mitochondrial compartments. 10
GO:0033110 CVT vesicle membrane The double lipid bilayer surrounding a CVT vesicle. 10
GO:0031357 integral to chloroplast inner membrane Located such that some or all of the gene product itself penetrates at least one phospholipid bilayer of the chloroplast inner membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 8
GO:0000306 extrinsic to vacuolar membrane Loosely bound to one or the other surface of the vacuolar membrane, but not integrated into the hydrophobic region. 8
GO:0097060 synaptic membrane A specialized area of membrane on either the presynaptic or the postsynaptic side of a synapse, the junction between a nerve fiber of one neuron and another neuron or muscle fiber or glial cell. 8
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. 8
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. 8
GO:0042584 chromaffin granule membrane The lipid bilayer surrounding a chromaffin granule, a specialized secretory vesicle found in the cells of adrenal glands and various other organs, which is concerned with the synthesis, storage, metabolism, and secretion of epinephrine and norepinephrine. 8
GO:0030867 rough endoplasmic reticulum membrane The lipid bilayer surrounding the rough endoplasmic reticulum. 8
GO:0030089 phycobilisome Any of the granules, approximately 32 nm x 48 nm and consisting of highly aggregated phycobiliproteins, that are attached in arrays to the external face of a thylakoid membrane in algae of the phyla Cyanophyta and Rhodophyta, where they function as light-harvesting devices in photosynthesis. Excitation energy in the phycobilisome flows in the sequence: phycoerythrin, phycocyanin, allophycocyanin before passing to the antenna chlorophyll of photosystem II. 8
GO:0005787 signal peptidase complex A protein complex that is located in the endoplasmic reticulum membrane and cleaves the signal sequence from precursor proteins following their transport out of the cytoplasmic space. 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:0042589 zymogen granule membrane The lipid bilayer surrounding a zymogen granule. 7
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. 7
GO:0031351 integral to plastid membrane Penetrating at least one phospholipid bilayer of a plastid membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 7
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. 7
GO:0030125 clathrin vesicle coat A clathrin coat found on a vesicle. 6
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. 6
GO:0030906 retromer complex, inner shell One of two subcomplexes that combine to form the retromer, believed to be closely associated with the membrane. In budding yeast the complex comprises Vps35p, Vps29p, and Vps26p. 6
GO:0009522 photosystem I A photosystem that contains an iron-sulfur reaction center associated with accessory pigments and electron carriers. In cyanobacteria and chloroplasts, photosystem I functions as a light-dependent plastocyanin-ferredoxin oxidoreductase, transferring electrons from plastocyanin to ferredoxin; in photosynthetic bacteria that have only a single type I photosystem, such as the green sulfur bacteria, electrons can go either to ferredoxin (Fd) -> NAD+ or to menaquinone (MK) -> Cytb/FeS -> Cytc555 -> photosystem I (cyclic photophosphorylation). 6
GO:0061474 phagolysosome membrane The lipid bilayer surrounding a phagolysosome. 6
GO:0030093 chloroplast photosystem I Photosystem located in the chloroplast that functions as a light-dependent plastocyanin-ferredoxin oxidoreductase, transferring electrons from plastocyanin to ferredoxin. An example of this is found in Arabidopsis thaliana. 6
GO:0034045 pre-autophagosomal structure membrane A cellular membrane associated with the pre-autophagosomal structure. 6
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. 5
GO:0031004 potassium ion-transporting ATPase complex Protein complex that carries out the reaction: ATP + H2O + K+(out) = ADP + phosphate + K+(in). It is a high affinity potassium uptake system. The E. coli complex consists of 4 proteins: KdpA is the potassium ion translocase, KdpB is the ATPase, and KdpC and KdpF seem to be involved in assembly and stabilization of the complex. 5
GO:0019867 outer membrane The external membrane of Gram-negative bacteria or certain organelles such as mitochondria and chloroplasts; freely permeable to most ions and metabolites. 5
GO:0034426 etioplast membrane Either of the lipid bilayers that surround a etioplast and form the etioplast envelope. 5
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. 5
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. 5
GO:0005746 mitochondrial respiratory chain The protein complexes that form the mitochondrial electron transport system (the respiratory chain), associated with the inner mitochondrial membrane. The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient. 5
GO:0032585 multivesicular body membrane The lipid bilayer surrounding a multivesicular body. 5
GO:0005637 nuclear inner membrane The inner, i.e. lumen-facing, lipid bilayer of the nuclear envelope. 5
GO:0030667 secretory granule membrane The lipid bilayer surrounding a secretory granule. 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:0012507 ER to Golgi transport vesicle membrane The lipid bilayer surrounding a vesicle transporting substances from the endoplasmic reticulum to the Golgi. 4
GO:0046930 pore complex Any small opening in a membrane that allows the passage of gases and/or liquids. 4
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. 4
GO:0031361 integral to thylakoid membrane Penetrating at least one phospholipid bilayer of a thylakoid membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 4
GO:0030131 clathrin adaptor complex A membrane coat adaptor complex that links clathrin to a membrane. 4
GO:0005640 nuclear outer membrane The outer, i.e. cytoplasm-facing, lipid bilayer of the nuclear envelope; continuous with the endoplasmic reticulum of the cell and sometimes studded with ribosomes. 4
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). 4
GO:0042734 presynaptic membrane A specialized area of membrane of the axon terminal that faces the plasma membrane of the neuron or muscle fiber with which the axon terminal establishes a synaptic junction; many synaptic junctions exhibit structural presynaptic characteristics, such as conical, electron-dense internal protrusions, that distinguish it from the remainder of the axon plasma membrane. 4
GO:0042652 mitochondrial respiratory chain complex I, peripheral segment The peripheral segment of respiratory chain complex I located in the mitochondrion. Respiratory chain complex I is an enzyme of the respiratory chain, consisting of at least 34 polypeptide chains. The electrons of NADH enter the chain at this complex. The complete complex is L-shaped, with a horizontal arm lying in the membrane and a vertical arm that projects into the matrix. 4
GO:0009544 chloroplast ATP synthase complex The protein complex that catalyzes the phosphorylation of ADP to ATP in chloroplasts. 3
GO:0009521 photosystem A complex located in a photosynthetic membrane that consists of a photoreaction center associated with accessory pigments and electron carriers. Examples of this component are found in Arabidopsis thaliana and in photosynthetic bacterial and archaeal species. 3
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. 3
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. 3
GO:0019866 organelle inner membrane The inner, i.e. lumen-facing, lipid bilayer of an organelle envelope; usually highly selective to most ions and metabolites. 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:0071627 integral to fungal-type vacuolar membrane Located such that some or all of the gene product itself penetrates at least one phospholipid bilayer of the fungal-type vacuolar membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 3
GO:0005639 integral to nuclear inner membrane Located such that some or all of the gene product itself penetrates at least one phospholipid bilayer of the nuclear inner membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 3
GO:0009538 photosystem I reaction center A photochemical system containing P700, the chlorophyll a dimer that functions as a primary electron donor. Functioning as a light-dependent plastocyanin-ferredoxin oxidoreductase, it transfers electrons from plastocyanin to ferredoxin. 3
GO:0070821 tertiary granule membrane The lipid bilayer surrounding a tertiary granule. 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:0009279 cell outer membrane A lipid bilayer that forms the outermost layer of the cell envelope; enriched in polysaccharide and protein; the outer leaflet of the membrane contains specific lipopolysaccharide structures. 3
GO:0031968 organelle outer membrane The outer, i.e. cytoplasm-facing in a cellular organelle, lipid bilayer of an organelle envelope. 2
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). 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:0070044 synaptobrevin 2-SNAP-25-syntaxin-1a complex A SNARE complex that contains synaptobrevin 2 (VAMP2), SNAP-25, and syntaxin 1a (or orthologs thereof). 2
GO:0032865 ERMES complex A protein complex that links the endoplasmic reticulum with mitochondria and may have a role in promoting exchange of calcium and phospholipids between the two organelles. The complex is also associated with actively replicating mitochondrial DNA nucleoids, and may further coordinate mitochondrial genome replication and membrane growth. 2
GO:0034357 photosynthetic membrane A membrane enriched in complexes formed of reaction centers, accessory pigments and electron carriers, in which photosynthetic reactions take place. 2
GO:0043541 UDP-N-acetylglucosamine transferase complex A multienzyme, heterooligomeric complex involved in dolichyl-linked oligosaccharide synthesis. In yeast the complex is composed of Alg7p, which catalyzes the first step (GlcNAc1-PP-Dol from dolichol-phosphate and UDP-GlcNAc), and Alg13p plus Alg14p, the catalytic and anchoring subunits respectively, which together catalyze the second step (GlcNAc2-PP-dolichol from GlcNAc1-PP-Dol and UDP-GlcNAc) of dolichyl-linked oligosaccharide synthesis. 2
GO:0030662 coated vesicle membrane The lipid bilayer surrounding a coated vesicle. 2
GO:0033178 proton-transporting two-sector ATPase complex, catalytic domain A protein complex that forms part of a proton-transporting two-sector ATPase complex and catalyzes ATP hydrolysis or synthesis. The catalytic domain (F1, V1, or A1) comprises a hexameric catalytic core and a central stalk, and is peripherally associated with the membrane when the two-sector ATPase is assembled. 2
GO:0034703 cation channel complex An ion channel complex through which cations pass. 2
GO:0030120 vesicle coat A membrane coat found on a coated vesicle. 2
GO:0070772 PAS complex A protein complex that contains a phosphatidylinositol-3-phosphate 5-kinase subunit (Fab1p in yeast; PIKfyve in mammals), a kinase activator, and a phosphatase, and may also contain additional proteins; it is involved in regulating the synthesis and turnover of phosphatidylinositol 3,5-bisphosphate. In mammals the complex is composed of PIKFYVE, FIG4 and VAC14. In yeast it is composed of Atg18p, Fig4p, Fab1p, Vac14p and Vac7p. 2
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. 2
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. 2
GO:0044214 fully spanning plasma membrane Fully spanning both phospholipid bilayers of a plasma membrane. 2
GO:0033177 proton-transporting two-sector ATPase complex, proton-transporting domain A protein complex that forms part of a proton-transporting two-sector ATPase complex and carries out proton transport across a membrane. The proton-transporting domain (F0, V0, or A0) includes integral and peripheral membrane proteins. 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: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. 1
GO:0010006 Toc complex Protein translocon complex at the chloroplast outer membrane. 1
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). 1
GO:0009923 fatty acid elongase complex A tetrameric complex of four different subunits which catalyzes the elongation of fatty acids chains 2 carbon units at a time in the synthesis of very long chain fatty acids. 1
GO:0030129 clathrin coat of synaptic vesicle A clathrin coat found on a synaptic vesicle. 1
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. 1
GO:0030663 COPI-coated vesicle membrane The lipid bilayer surrounding a COPI-coated vesicle. 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:0030130 clathrin coat of trans-Golgi network vesicle A clathrin coat found on a vesicle of the trans-Golgi network. 1
GO:0032578 aleurone grain membrane The lipid bilayer surrounding an aleurone grain. 1
GO:0033180 proton-transporting V-type ATPase, V1 domain A protein complex that forms part of a proton-transporting V-type ATPase and catalyzes ATP hydrolysis. The V1 complex consists of: (1) a globular headpiece with three alternating copies of subunits A and B that form a ring, (2) a central rotational stalk composed of single copies of subunits D and F, and (3) a peripheral stalk made of subunits C, E, G and H. Subunits A and B mediate the hydrolysis of ATP at three reaction sites associated with subunit A. 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:0045259 proton-transporting ATP synthase complex A proton-transporting two-sector ATPase complex that catalyzes the phosphorylation of ADP to ATP during oxidative phosphorylation. The complex comprises a membrane sector (F0) that carries out proton transport and a cytoplasmic compartment sector (F1) that catalyzes ATP synthesis by a rotational mechanism; the extramembrane sector (containing 3 a and 3 b subunits) is connected via the d-subunit to the membrane sector by several smaller subunits. Within this complex, the g and e subunits and the 9-12 c subunits rotate by consecutive 120 degree angles and perform parts of ATP synthesis. This movement is driven by the hydrogen ion electrochemical potential gradient. 1
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. 1
GO:0030285 integral to synaptic vesicle membrane Penetrating at least one phospholipid bilayer of a synaptic vesicle membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. 1