Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome. Arabidopsis thaliana (taxid: 3702)
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Score = 94.7 bits (234), Expect = 1e-19, Method: Compositional matrix adjust.
Identities = 49/105 (46%), Positives = 61/105 (58%), Gaps = 15/105 (14%)
Query: 15 AEEVAPPLRVVQIEGLVMLKIIKHCKEFSPALVTGQLLGLDVGSVLEVTNCFPFPIQEED 74
AE+ PL V++E LV++KIIKHC + P TG ++G+DV VLE+TN FPFP+ E
Sbjct: 2 AEKEVTPLTAVKVEALVVMKIIKHCSQVFPTTATGSIVGMDVDGVLEITNTFPFPVVEVP 61
Query: 75 EEIEADGAN---------------YQLEMMRCLREVNVDNNTVGW 104
E D A YQ EM+R LREVNVD N VGW
Sbjct: 62 PESHFDNAAPNPAAAAPRAKANTVYQAEMIRMLREVNVDANNVGW 106
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Score = 92.4 bits (228), Expect = 7e-19, Method: Compositional matrix adjust.
Identities = 46/99 (46%), Positives = 58/99 (58%), Gaps = 15/99 (15%)
Query: 21 PLRVVQIEGLVMLKIIKHCKEFSPALVTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEAD 80
PL V++E LV++KI+KHC + P TG ++G+DVG LE+TN FPFP+ E E D
Sbjct: 7 PLTAVKVEALVVMKIMKHCSQTFPTTATGSIVGMDVGGTLEITNSFPFPVVEVPPESHFD 66
Query: 81 GAN---------------YQLEMMRCLREVNVDNNTVGW 104
A YQ EM+R LREVNVD N VGW
Sbjct: 67 NAAANPAAAAPRAKANTVYQAEMIRMLREVNVDANNVGW 105
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Score = 92.4 bits (228), Expect = 7e-19, Method: Compositional matrix adjust.
Identities = 46/99 (46%), Positives = 58/99 (58%), Gaps = 15/99 (15%)
Query: 21 PLRVVQIEGLVMLKIIKHCKEFSPALVTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEAD 80
PL V++E LV++KI+KHC + P TG ++G+DVG LE+TN FPFP+ E E D
Sbjct: 7 PLTAVKVEALVVMKIMKHCSQTFPTTATGSIVGMDVGGTLEITNSFPFPVVEVPPESHFD 66
Query: 81 GAN---------------YQLEMMRCLREVNVDNNTVGW 104
A YQ EM+R LREVNVD N VGW
Sbjct: 67 NAAANPAAAAPRAKANTVYQAEMIRMLREVNVDANNVGW 105
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is involved in protein synthesis and, together with other initiation factors, stimulates binding of mRNA and methionyl-tRNAi to the 40S ribosome.
Gallus gallus (taxid: 9031)
Close Homologs in the Non-Redundant Database Detected by BLAST
Eukaryotic translation initiation factor 3 (eIF3) subunit h (eIF3h; eIF3 subunit 3; eIF3S3; eIF3-gamma; eIF3-p40) is an evolutionarily non-conserved subunit of the functional core that comprises eIF3a, eIF3b, eIF3c, eIF3e, eIF3f, and eIF3h, and contains the MPN domain. However, it lacks the canonical JAMM motif, and therefore does not show catalytic isopeptidase activity.Together with eIF3e and eIF3f, eIF3h stabilizes the eIF3 complex. Results suggest that eIF3h regulates cell growth and viability, and that over-expression of the gene may provide growth advantage to prostate, breast, and liver cancer cells. For example, EIF3h gene amplification is common in late-stage prostate cancer suggesting that it may be functionally involved in the progression of the disease. It has been shown that coamplification of MYC, a well characterized oncogene involved in cell growth, differentiation, and apoptosis, and EIF3h in patients with non-small cell lung cancer (NSCLC) improves survival if treated with the Epidermal Growth Factor Receptor Tyrosine Kinase Inhibitor (EGFR-TKI), Gefitinib. Plant eIF3h is implicated in translation of specific mRNAs. Length = 266
Score = 59.3 bits (144), Expect = 9e-13
Identities = 27/81 (33%), Positives = 38/81 (46%)
Query: 24 VVQIEGLVMLKIIKHCKEFSPALVTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEADGAN 83
V++ LV L I+KH P V G LLG EV F P + +D+ ++ +
Sbjct: 1 EVKVHPLVPLNILKHAIRDGPEEVCGVLLGKSNKDRPEVKEVFAVPNEPQDDSVQEYDED 60
Query: 84 YQLEMMRCLREVNVDNNTVGW 104
Y M L++VN D VGW
Sbjct: 61 YSHLMDEELKKVNKDLEIVGW 81
Domain in Jun kinase activation domain binding protein and proteasomal subunits. Domain at Mpr1p and Pad1p N-termini. Domain of unknown function. Length = 135
Score = 58.6 bits (142), Expect = 3e-12
Identities = 29/82 (35%), Positives = 39/82 (47%), Gaps = 3/82 (3%)
Query: 25 VQIEGLVMLKIIKHC--KEFSPALVTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEADGA 82
VQ+ LV+L I H +++ V G LLG G +EVTN F P EE+E I D
Sbjct: 1 VQLHPLVLLNISDHYTRRKYGIKRVIGVLLGYVDGDKIEVTNSFELPFDEEEESIFID-T 59
Query: 83 NYQLEMMRCLREVNVDNNTVGW 104
Y + ++V VGW
Sbjct: 60 EYLEKRYNLHKKVYPQEKIVGW 81
This family contains MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+) domains variants lacking key residues in the JAB1/MPN/Mov34 metalloenzyme (JAMM) motif and are unable to coordinate a metal ion. Comparisons of key catalytic and metal binding residues explain why the MPN-containing proteins Rpn7/PSMD7, Rpn8/PSMD8, CSN6, Prp8p, and the translation initiation factor 3 subunits f and h do not show catalytic isopeptidase activity. It has been proposed that the MPN domain in these proteins has a primarily structural function. Rpn7 is known to be critical for the integrity of the 26S proteasome complex by establishing a correct lid structure. It is necessary for the incorporation/anchoring of Rpn3 and Rpn12 to the lid and essential for viability and normal mitosis. CSN6 is a highly conserved protein complex with diverse functions, including several important intracellular pathways such as the ubiquitin/proteasome system, DNA repair, cell cycle, developmental changes, and some aspects of immune responses. It cleaves ubiquitin-like protein Nedd8 (neural precursor cell expressed, developmentally downregulated 8)) in the cullin 1 in cells. EIF3f s a potent inhibitor of HIV-1 replication as well as an important negative regulator of cell growth and proliferation. EIF3h regulates cell growth and viability, and that over-expression of the gene may provide growth advantage to prostate, breast, and liver cancer cells. Length = 157
Score = 56.6 bits (137), Expect = 8e-12
Identities = 34/89 (38%), Positives = 48/89 (53%), Gaps = 5/89 (5%)
Query: 21 PLRVVQIEGLVMLKIIKHCKEFSPAL--VTGQLLGLDVG-SVLEVTNCFPFPIQEEDEEI 77
+R V I LV+LKI+ H + + V G LLG G V+EVTN F P E ++++
Sbjct: 1 SVRTVVIHPLVLLKIVDHARRGGKSGEEVMGVLLGTLEGDRVIEVTNSFALPQSETEDDV 60
Query: 78 EADGA--NYQLEMMRCLREVNVDNNTVGW 104
EA Y +M+ L++VN D VGW
Sbjct: 61 EAVELDHEYMEKMLEMLKKVNRDEEVVGW 89
Members of this family are found in proteasome regulatory subunits, eukaryotic initiation factor 3 (eIF3) subunits and regulators of transcription factors. This family is also known as the MPN domain and PAD-1-like domain, JABP1 domain or JAMM domain. These are metalloenzymes that function as the ubiquitin isopeptidase/ deubiquitinase in the ubiquitin-based signaling and protein turnover pathways in eukaryotes. Versions of the domain in prokaryotic cognates of the ubiquitin-modification pathway are predicted to have a similar role. Length = 117
>gnl|CDD|163695 cd08064, MPN_eIF3f, Mpr1p, Pad1p N-terminal (MPN) domains without catalytic isopeptidase activity, found in eIF3f
Score = 44.1 bits (105), Expect = 2e-06
Identities = 20/58 (34%), Positives = 28/58 (48%), Gaps = 1/58 (1%)
Query: 47 VTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEADGANYQLEMMRCLREVNVDNNTVGW 104
V G LLG +E+TNCF P E ++++ D Y M ++VN VGW
Sbjct: 25 VIGTLLGTRSEGEVEITNCFAVPHNESEDQVAVD-MEYHRTMYELHQKVNPKEVIVGW 81
Eukaryotic translation initiation factor 3 (eIF3) subunit F (eIF3F; EIF3S5; eIF3-p47; eukaryotic translation initiation factor 3, subunit 5 epsilon, 47kDa; Mov34/MPN/PAD-1 family protein) is an evolutionarily non-conserved subunit of the functional core that comprises eIF3a, eIF3b, eIF3c, eIF3e, eIF3f, and eIF3h, and contains the MPN domain. However, it lacks the canonical JAMM motif, and therefore does not show catalytic isopeptidase activity. It has been shown that eIF3f mRNA expression is significantly decreased in many human tumors including pancreatic cancer and melanoma. EIF3f is a potent inhibitor of HIV-1 replication; it mediates restriction of HIV-1 expression through several factors including the serine/arginine-rich (SR) protein 9G8, and cyclin-dependent kinase 11 (CDK11). EIF3f phosphorylation by CDK11 is important in regulating its function in translation and apoptosis. It enhances its association with the core eIF3 subunits during apoptosis, suggesting that eIF3f may inhibit translation by increasing the binding to the eIF3 complex during apoptosis. Thus, eIF3f may be an important negative regulator of cell growth and proliferation. Length = 265
Score = 36.1 bits (84), Expect = 0.001
Identities = 24/84 (28%), Positives = 37/84 (44%), Gaps = 7/84 (8%)
Query: 25 VQIEGLVMLKIIKHCKEFSPALVTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEADGANY 84
V I L +LK++KH + P V G +LG + V + F P++ + + A
Sbjct: 12 VYISSLALLKMLKHARAGGPIEVMGLMLGKVDDYTIIVVDVFALPVEGTETRVNAQDEFQ 71
Query: 85 ----QLEMMRCLREVNVDNNTVGW 104
Q EM L++ N VGW
Sbjct: 72 EYMVQYEM---LKQTGRPENVVGW 92
This family contains proteasomal regulatory protein Rpn11 (26S proteasome regulatory subunit rpn11; PAD1; POH1; RPN11; PSMD14; Rpn11 subunit of the 19S-proteasome; regulatory particle number 11) and signalosomal CSN5 (COP9 signalosome complex subunit 5; COP9 complex homolog subunit 5; c-Jun activation domain-binding protein-1; CSN5/JAB1; JAB1). COP9 signalosome (CSN) and the proteasome lid are paralogous complexes and their respective subunits CSN5 and Rpn11 are most closely related between the two complexes, both containing the conserved JAMM (JAB1/MPN/Mov34 metalloenzyme) motif involved in zinc ion coordination and providing the active site for isopeptidase activity. Rpn11 is responsible for substrate deubiquitination during proteasomal degradation. It is essential for maintaining a correct cell cycle and normal mitochondrial morphology and physiology; mutations in Rpn11 cause cell cycle and mitochondrial defects, temperature sensitivity and sensitivity to DNA damaging reagents such as UV. It has been shown that the C-terminal region of Rpn11 is involved in the regulation of the mitochondrial fission and tubulation processes. CSN5, one of the eight subunits of CSN, is critical for nuclear export and the degradation of several tumor suppressor proteins, including p53, p27, and Smad4. Its MPN+ domain is critical for the physical interaction of RUNX3 and Jab1. It has been suggested that the direct interaction of CSN5/JAB1 with p27 provides p27 with a leucine-rich nuclear export signal (NES), which is required for binding to chromosomal region maintenance 1 (CRM1), and facilitates nuclear export. The over-expression of CSN5/JAB1 also has been implicated in cancer initiation and progression, including cancer of the lung, pancreas, mouth, thyroid, and breast, suggesting that the oncogenic activity of CSN5 is associated with the down-regulation of RUNX3. Length = 268
>gnl|CDD|163693 cd08062, MPN_RPN7_8, Mpr1p, Pad1p N-terminal (MPN) domains without catalytic isopeptidase activity, found in 19S proteasomal subunits Rpn7 and Rpn8
Score = 35.6 bits (83), Expect = 0.002
Identities = 22/61 (36%), Positives = 30/61 (49%), Gaps = 4/61 (6%)
Query: 47 VTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEA---DGANYQLEMMRCLREVNVDNNTVG 103
V G LLG VL+VTN F P +E++++ D NY M ++VN VG
Sbjct: 28 VVGVLLGSWKKGVLDVTNSFAVPFEEDEKDPSVWFLD-HNYLENMYGMFKKVNAKEKIVG 86
Query: 104 W 104
W
Sbjct: 87 W 87
This family includes lid subunits of the 26 S proteasome regulatory particles, Rpn7 (PSMD7; proteasome 26S non-ATPase subunit 7; p44), and Rpn8 (PSMD8; proteasome 26S non-ATPase subunit 8; p40; Mov34). Rpn7 is known to be critical for the integrity of the 26 S proteasome complex by establishing a correct lid structure. It is necessary for the incorporation/anchoring of Rpn3 and Rpn12 to the lid and essential for viability and normal mitosis. Rpn7 and Rpn8 are ATP-independent components of the 19S regulator subunit, and contain the MPN structural motif on its N-terminal region. However, while they show a typical MPN metalloprotease fold, they lack the canonical JAMM motif, and therefore do not show catalytic isopeptidase activity. It is suggested that Rpn7 function is primarily structural. Length = 280
Probab=99.95 E-value=2.5e-28 Score=172.53 Aligned_cols=79 Identities=35% Similarity=0.524 Sum_probs=73.8
Q ss_pred EEEeehHHHHHHHHHhhhC--CceeEEEEeeeEeCCEEEEEEEeecccccCcchhhcccHHHHHHHHHHHHhhCCCCCcc
Q 034084 25 VQIEGLVMLKIIKHCKEFS--PALVTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEADGANYQLEMMRCLREVNVDNNTV 102 (104)
Q Consensus 25 V~vhplVll~I~dh~~r~~--~~~viG~LLG~~~~~~veVtnsF~vP~~~~~~~~~~~~~~y~~~m~~~~k~v~~~e~iV 102 (104)
|+|||+|||+|+|||+|+. +.+|+|+|||.+.+++++|+|||++|+.++++...+ +.+|+++|++++|+|+|++.+|
T Consensus 1 V~ihplvll~I~dh~~R~~~~~~~v~G~LlG~~~~~~veV~nsF~lp~~~~~~~~~~-d~~y~~~m~~~~~~v~~~~~vV 79 (157)
T cd08057 1 VQLHPLVLLNISDHYTRRKYGIKRVIGVLLGYVDGDKIEVTNSFELPFDEEEESIFI-DTEYLEKRYNLHKKVYPQEKIV 79 (157)
T ss_pred CEEccHHHhhHHHHHHhccCCCCeEEEEEEeEEeCCEEEEEEeEEccccCCCcchhh-hHHHHHHHHHHHHHhCCCCCEE
Confidence 6899999999999999998 799999999999999999999999999887766545 5999999999999999999999
Q ss_pred cC
Q 034084 103 GW 104 (104)
Q Consensus 103 GW 104 (104)
||
T Consensus 80 GW 81 (157)
T cd08057 80 GW 81 (157)
T ss_pred EE
Confidence 99
This family contains MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+) domains variants lacking key residues in the JAB1/MPN/Mov34 metalloenzyme (JAMM) motif and are unable to coordinate a metal ion. Comparisons of key catalytic and metal binding residues explain why the MPN-containing proteins Rpn7/PSMD7, Rpn8/PSMD8, CSN6, Prp8p, and the translation initiation factor 3 subunits f and h do not show catalytic isopeptidase activity. It has been proposed that the MPN domain in these proteins has a primarily structural function. Rpn7 is known to be critical for the integrity of the 26S proteasome complex by establishing a correct lid structure. It is necessary for the incorporation/anchoring of Rpn3 and Rpn12 to the lid and essential for viability and normal mitosis. CSN6 is a highly conserved protein complex with diverse functions, including several import
Probab=99.95 E-value=1e-27 Score=182.22 Aligned_cols=79 Identities=29% Similarity=0.577 Sum_probs=73.9
Q ss_pred EEEeehHHHHHHHHHhhh--CCceeEEEEeeeEeCCEEEEEEEeecccccCcchhhcccHHHHHHHHHHHHhhCCCCCcc
Q 034084 25 VQIEGLVMLKIIKHCKEF--SPALVTGQLLGLDVGSVLEVTNCFPFPIQEEDEEIEADGANYQLEMMRCLREVNVDNNTV 102 (104)
Q Consensus 25 V~vhplVll~I~dh~~r~--~~~~viG~LLG~~~~~~veVtnsF~vP~~~~~~~~~~~~~~y~~~m~~~~k~v~~~e~iV 102 (104)
|+|||+|+|+|+|||+|+ .+.+|+|+|||.+.++++||||||++|++++++++.+| .+|+++|+++||++||++.+|
T Consensus 1 v~ihPlVll~I~dH~~R~~~~~~~V~G~LLG~~~~~~veItnsF~~p~~~~~~~~~~d-~~y~~~m~~~~kkv~~~~~vV 79 (265)
T cd08064 1 VRVHPVVLFSILDSYERRNEGQERVIGTLLGTRSEGEVEITNCFAVPHNESEDQVAVD-MEYHRTMYELHQKVNPKEVIV 79 (265)
T ss_pred CEEccHHHHhHHHHHhhhcCCCcEEEEEEEEEEeCCEEEEEeCeecceeCCCCeEEEc-HHHHHHHHHHHHHhCCCCcEE
Confidence 689999999999999996 45899999999999999999999999999887766665 999999999999999999999
Q ss_pred cC
Q 034084 103 GW 104 (104)
Q Consensus 103 GW 104 (104)
||
T Consensus 80 GW 81 (265)
T cd08064 80 GW 81 (265)
T ss_pred ee
Confidence 99
Eukaryotic translation initiation factor 3 (eIF3) subunit F (eIF3F; EIF3S5; eIF3-p47; eukaryotic translation initiation factor 3, subunit 5 epsilon, 47kDa; Mov34/MPN/PAD-1 family protein) is an evolutionarily non-conserved subunit of the functional core that comprises eIF3a, eIF3b, eIF3c, eIF3e, eIF3f, and eIF3h, and contains the MPN domain. However, it lacks the canonical JAMM motif, and therefore does not show catalytic isopeptidase activity. It has been shown that eIF3f mRNA expression is significantly decreased in many human tumors including pancreatic cancer and melanoma. EIF3f is a potent inhibitor of HIV-1 replication; it mediates restriction of HIV-1 expression through several factors including the serine/arginine-rich (SR) protein 9G8, and cyclin-dependent kinase 11 (CDK11). EIF3f phosphorylation by CDK11 is important in regulating its function in translation and ap
>cd08062 MPN_RPN7_8 Mpr1p, Pad1p N-terminal (MPN) domains without catalytic isopeptidase activity, found in 19S proteasomal subunits Rpn7 and Rpn8
This family includes lid subunits of the 26 S proteasome regulatory particles, Rpn7 (PSMD7; proteasome 26S non-ATPase subunit 7; p44), and Rpn8 (PSMD8; proteasome 26S non-ATPase subunit 8; p40; Mov34). Rpn7 is known to be critical for the integrity of the 26 S proteasome complex by establishing a correct lid structure. It is necessary for the incorporation/anchoring of Rpn3 and Rpn12 to the lid and essential for viability and normal mitosis. Rpn7 and Rpn8 are ATP-independent components of the 19S regulator subunit, and contain the MPN structural motif on its N-terminal region. However, while they show a typical MPN metalloprotease fold, they lack the canonical JAMM motif, and therefore do not show catalytic isopeptidase activity. It is suggested that Rpn7 function is primarily structural.
>cd08063 MPN_CSN6 Mpr1p, Pad1p N-terminal (MPN) domains without catalytic isopeptidase activity, found in COP9 signalosome complex subunit 6
CSN6 (COP9 signalosome subunit 6; COP9 subunit 6; MOV34 homolog, 34 kD) is one of the eight subunits of COP9 signalosome, a highly conserved protein complex with diverse functions, including several important intracellular pathways such as the ubiquitin/proteasome system, DNA repair, cell cycle, developmental changes, and some aspects of immune responses. CSN6 is an MPN-domain protein that directly interacts with the MPN+-domain subunit CSN5. It is cleaved during apoptosis by activated caspases. CSN6 processing occurs in CSN/CRL (cullin-RING Ub ligase) complexes and is followed by the cleavage of Rbx1, the direct interaction partner of CSN6. CSN6 cleavage enhances CSN-mediated deneddylating activity (i.e. cleavage of ubiquitin-like protein Nedd8 (neural precursor cell expressed, developmentally downregulated 8)) in the cullin 1 in cells. The cleav
>PF01398 JAB: JAB1/Mov34/MPN/PAD-1 ubiquitin protease; InterPro: IPR000555 Members of this family are found in proteasome regulatory subunits, eukaryotic initiation factor 3 (eIF3) subunits and regulators of transcription factors
This family is also known as the MPN domain [] and PAD-1-like domain []. It has been shown that this domain occurs in prokaryotes []. Mov34 proteins act as the regulatory subunit of the 26 proteasome, which is involved in the ATP-dependent degradation of ubiquitinated proteins. The function of this domain is unclear, but it is found in the N terminus of the proteasome regulatory subunits, eukaryotic initiation factor 3 (eIF3) subunits and regulators of transcription factors. A number of the proteins associated with this family belong to MEROPS peptidase family M67 (clan M-). This includes the Poh1 peptidase of Saccharomyces cerevisiae (Baker's yeast) which is a component of the 19S proteasome regulatory particle.; GO: 0005515 protein binding; PDB: 2ZNV_D 2ZNR_A 4E0Q_A 2P87_A 2P8R_A 2O96_B 2O95_A 3RZU_F 3RZV_A.
>cd08065 MPN_eIF3h Mpr1p, Pad1p N-terminal (MPN) domains without catalytic isopeptidase activity, found in eIF2h
Eukaryotic translation initiation factor 3 (eIF3) subunit h (eIF3h; eIF3 subunit 3; eIF3S3; eIF3-gamma; eIF3-p40) is an evolutionarily non-conserved subunit of the functional core that comprises eIF3a, eIF3b, eIF3c, eIF3e, eIF3f, and eIF3h, and contains the MPN domain. However, it lacks the canonical JAMM motif, and therefore does not show catalytic isopeptidase activity.Together with eIF3e and eIF3f, eIF3h stabilizes the eIF3 complex. Results suggest that eIF3h regulates cell growth and viability, and that over-expression of the gene may provide growth advantage to prostate, breast, and liver cancer cells. For example, EIF3h gene amplification is common in late-stage prostate cancer suggesting that it may be functionally involved in the progression of the disease. It has been shown that coamplification of MYC, a well characterized oncogene involved in cell growth, different
This family contains proteasomal regulatory protein Rpn11 (26S proteasome regulatory subunit rpn11; PAD1; POH1; RPN11; PSMD14; Rpn11 subunit of the 19S-proteasome; regulatory particle number 11) and signalosomal CSN5 (COP9 signalosome complex subunit 5; COP9 complex homolog subunit 5; c-Jun activation domain-binding protein-1; CSN5/JAB1; JAB1). COP9 signalosome (CSN) and the proteasome lid are paralogous complexes and their respective subunits CSN5 and Rpn11 are most closely related between the two complexes, both containing the conserved JAMM (JAB1/MPN/Mov34 metalloenzyme) motif involved in zinc ion coordination and providing the active site for isopeptidase activity. Rpn11 is responsible for substrate deubiquitination during proteasomal degradation. It is essential for maintaining a correct cell cycle and normal mitochondrial morphology and physiology; mutations i
>KOG3050 consensus COP9 signalosome, subunit CSN6 [Posttranslational modification, protein turnover, chaperones; Signal transduction mechanisms]
This family includes histone H2A deubiquitinase (Histone H2A DUB;MYSM1; myb-like, SWIRM and MPN domains 1; 2ADUB; 2A-DUB; KIAA19152ADUB, or KIAA1915/MYSM1), a member of JAMM/MPN+ deubiquitinases (DUBs), with possible Zn2+-dependent ubiquitin isopeptidase activity. It contains the SWIRM (Swi3p, Rsc8p and Moira), and SANT (SWI-SNF, ADA N-CoR, TFIIIB)/Myb domains; the SANT, but not the SWIRM, domain can bind directly to DNA. 2A-DUB is specific for monoubiquitinated H2A (uH2A), regulating transcription by coordinating histone acetylation and deubiquitination, and destabilizing the association of linker histone H1 with nucleosomes. 2A-DUB interacts with p/CAF (p300/CBP-associated factor) in a co-regulatory protein complex, where the status of acetylation of nucleosomal histones modulates its deubiquitinase activity. 2A-DUB is a positive regulator of androgen receptor (AR) transactivation activity on a reporter gene; it p
MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+) domains are found in the N-terminal termini of proteins with a variety of functions; they are components of the proteasome regulatory subunits, the signalosome (CSN), eukaryotic translation initiation factor 3 (eIF3) complexes, and regulators of transcription factors. These domains are isopeptidases that release ubiquitin from ubiquitinated proteins (thus having deubiquitinating (DUB) activity) that are tagged for degradation. Catalytically active MPN domains contain a metalloprotease signature known as the JAB1/MPN/Mov34 metalloenzyme (JAMM) motif. For example, Rpn11 (also known as POH1 or PSMD14), a subunit of the 19S proteasome lid is involved in the ATP-dependent degradation of ubiquitinated proteins, contains the conserved JAMM motif involved in zinc ion coordination. Poh1 is a regulator of c-Jun, an important regulator of cell proliferation, differentiation, survival and death. J
This family contains eukaryotic MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+) domains found in proteins with a variety of functions, including AMSH (associated molecule with the Src homology 3 domain (SH3) of STAM), H2A-DUB (histone H2A deubiquitinase), BRCC36 (BRCA1/BRCA2-containing complex subunit 36), as well as Rpn11 (regulatory particle number 11) and CSN5 (COP9 signalosome complex subunit 5). These domains contain the signature JAB1/MPN/Mov34 metalloenzyme (JAMM) motif, EXnHS/THX7SXXD, which is involved in zinc ion coordination and provides the active site for isopeptidase activity. Rpn11 is responsible for substrate deubiquitination during proteasomal degradation. It is essential for maintaining a correct cell cycle and normal mitochondrial morphology and physiology. CSN5 is critical for nuclear export and the degradation of several tumor suppressor prot
>cd08068 MPN_BRCC36 Mov34/MPN/PAD-1 family: BRCC36, a subunit of BRCA1-A complex
BRCC36 (BRCA1-A complex subunit BRCC36; BRCA1/BRCA2-containing complex subunit 36; BRCA1/BRCA2-containing complex subunit 3; BRCC3; BRISC complex subunit BRCC36; BRCC36 isopeptidase complex; Lys-63-specific deubiquitinase BRCC36) and BRCC36-like domains are members of JAMM/MPN+ deubiquitinases (DUBs), possibly with Zn2+-dependent ubiquitin isopeptidase activity. BRCC36 is part of the BRCA1/BRCA2/BARD1-containing nuclear complex that displays an E3 ubiquitin ligase activity. It is targeted to DNA damage foci after irradiation; RAP80 recruits the Abraxas-BRCC36-BRCA1-BARD1 complex to DNA double strand breaks (DSBs) for DNA repair through specific recognition of Lys 63-linked polyubiquitinated proteins by its tandem ubiquitin-interacting motifs. A new protein, MERIT40 (mediator of RAP80 interactions and targeting 40 kDa), also named NBA1 (new component of the BRCA1 A complex), exists in the same BRCA1-contai
This family contains archaeal and bacterial MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+)-like domains. These domains contain the signature JAB1/MPN/Mov34 metalloenzyme (JAMM) motif, EXnHS/THX7SXXD, which is involved in zinc ion coordination and provides the active site for isopeptidase activity for the release of ubiquitin from ubiquitinated proteins (thus having deubiquitinating (DUB) activity) that are tagged for degradation. The JAMM proteins likely hydrolyze ubiquitin conjugates in a manner similar to thermolysin, in which the zinc-polarized aqua ligand serves as the nucleophile, compared with the classical DUBs that do so with a cysteine residue in the active site.
AMSH (associated molecule with the Src homology 3 domain (SH3) of STAM (signal-transducing adapter molecule, also known as STAMBP)) and AMSH-like proteins (AMSH-LP) are members of JAMM/MPN+ deubiquitinases (DUBs), with Zn2+-dependent ubiquitin isopeptidase activity. AMSH specifically cleaves Lys 63 and not Lys48-linked polyubiquitin (poly-Ub) chains, thus facilitating the recycling and subsequent trafficking of receptors to the cell surface. AMSH and AMSH-LP are anchored on the early endosomal membrane via interaction with the clathrin coat. AMSH shares a common SH3-binding site with another endosomal DUB, UBPY (ubiquitin-specific protease Y; also known as USP8), the latter being a cysteine protease that does not discriminate between Lys48 and Lys63-linked ubiquitin. AMSH is involved in the degradation of EGF receptor (EGFR) and possibly other ubiquitinated endocytosed proteins. AMSH also interacts with CHMP1, CHMP2, and CHMP3 proteins, al
>cd08060 MPN_UPF0172 Mov34/MPN/PAD-1 family: UPF0172 family of unknown function includes neighbor of COX4 (Noc4p)
This family includes Noc4p (neighbor of COX4; neighbor of Cytochrome c Oxidase 4; nucleolar complex associated 4 homolog) which belongs to the family of unknown function, UPF0172, with MPN/JAMM-like domains. Proteins in this family are homologs of the NOC4 gene which is conserved in eukaryotic members including human, dog, mouse, rat, chicken, zebrafish, fruit fly, mosquito, S.pombe, K.lactis, E.gossypii, M.grisea, N.crassa, A.thaliana, and rice. NOC4 highly expressed in the pancreas and moderately in liver, heart, lung, kidney, brain, skeletal muscle, and placenta. This nucleolar protein forms a complex with Nop14p that mediates maturation and nuclear export of 40S ribosomal subunits. This family of eukaryotic MPN-like domains lacks the key residues that coordinate a metal ion and therefore does not show catalytic isopeptidase activity.
>PF03665 UPF0172: Uncharacterised protein family (UPF0172); InterPro: IPR005366 This is a small family of proteins of unknown function
This family contains only archaeal MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+)-like domains. These domains contain the signature JAB1/MPN/Mov34 metalloenzyme (JAMM) motif, EXnHS/THX7SXXD, which is involved in zinc ion coordination and provides the active site for isopeptidase activity for the release of ubiquitin from ubiquitinated proteins (thus having deubiquitinating (DUB) activity) that are tagged for degradation. The JAMM proteins likely hydrolyze ubiquitin conjugates in a manner similar to thermolysin, in which the zinc-polarized aqua ligand serves as the nucleophile, compared with the classical DUBs that do so with a cysteine residue in the active site.
>PF14464 Prok-JAB: Prokaryotic homologs of the JAB domain; PDB: 1OI0_A 1R5X_B 2KKS_A 2KCQ_A
This uncharacterized protein is found in several Proteobacteria, among them Rhizobium sp. NGR234, Vibrio cholerae, Myxococcus xanthus, and E. coli strain ECOR31. In the latter, it is part of an integrative and conjugative element that is readily induced to excise and circularize.
>cd08073 MPN_NLPC_P60 Mpr1p, Pad1p N-terminal (MPN) domains with catalytic isopeptidase activity (metal-binding) found in proteins also containing NlpC/P60 domains
This family contains bacterial MPN (also known as Mov34, PAD-1, JAMM, JAB, MPN+)-like domains at the N-terminus of NlpC/P60 phage tail protein domains. These domains contain the signature JAB1/MPN/Mov34 metalloenzyme (JAMM) motif, EXnHS/THX7SXXD, which is involved in zinc ion coordination and provides the active site for isopeptidase activity for the release of ubiquitin from ubiquitinated proteins (thus having deubiquitinating (DUB) activity) that are tagged for degradation. The JAMM proteins likely hydrolyze ubiquitin conjugates in a manner similar to thermolysin, in which the zinc-polarized aqua ligand serves as the nucleophile, compared with the classical DUBs that do so with a cysteine residue in the active site.
