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MAEA_MACFA
ID   MAEA_MACFA              Reviewed;         396 AA.
AC   Q4R9A8; Q4R8Z9; Q9GMU8;
DT   01-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   19-JUL-2005, sequence version 1.
DT   25-MAY-2022, entry version 60.
DE   RecName: Full=E3 ubiquitin-protein transferase MAEA;
DE            EC=2.3.2.27 {ECO:0000250|UniProtKB:Q7L5Y9};
DE   AltName: Full=Macrophage erythroblast attacher;
GN   Name=MAEA; ORFNames=QnpA-13115, QtsA-10391, QtsA-11053;
OS   Macaca fascicularis (Crab-eating macaque) (Cynomolgus monkey).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini;
OC   Cercopithecidae; Cercopithecinae; Macaca.
OX   NCBI_TaxID=9541;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 3).
RC   TISSUE=Brain;
RA   Osada N., Hida M., Kusuda J., Tanuma R., Iseki K., Hirai M., Terao K.,
RA   Suzuki Y., Sugano S., Hashimoto K.;
RT   "Isolation of full-length cDNA clones from macaque brain cDNA libraries.";
RL   Submitted (AUG-2000) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 2).
RC   TISSUE=Testis;
RG   International consortium for macaque cDNA sequencing and analysis;
RT   "DNA sequences of macaque genes expressed in brain or testis and its
RT   evolutionary implications.";
RL   Submitted (JUN-2005) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Core component of the CTLH E3 ubiquitin-protein ligase
CC       complex that selectively accepts ubiquitin from UBE2H and mediates
CC       ubiquitination and subsequent proteasomal degradation of the
CC       transcription factor HBP1. MAEA and RMND5A are both required for
CC       catalytic activity of the CTLH E3 ubiquitin-protein ligase complex.
CC       MAEA is required for normal cell proliferation. The CTLH E3 ubiquitin-
CC       protein ligase complex is not required for the degradation of enzymes
CC       involved in gluconeogenesis, such as FBP1 (By similarity). Plays a role
CC       in erythroblast enucleation during erythrocyte maturation and in the
CC       development of mature macrophages (By similarity). Mediates the
CC       attachment of erythroid cell to mature macrophages; this MAEA-mediated
CC       contact inhibits erythroid cell apoptosis (By similarity). Participates
CC       in erythroblastic island formation, which is the functional unit of
CC       definitive erythropoiesis. Associates with F-actin to regulate actin
CC       distribution in erythroblasts and macrophages (By similarity). May
CC       contribute to nuclear architecture and cells division events (By
CC       similarity). {ECO:0000250|UniProtKB:Q4VC33,
CC       ECO:0000250|UniProtKB:Q7L5Y9}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine +
CC         [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-
CC         cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine.;
CC         EC=2.3.2.27; Evidence={ECO:0000250|UniProtKB:Q7L5Y9};
CC   -!- SUBUNIT: Identified in the CTLH complex that contains GID4, RANBP9
CC       and/or RANBP10, MKLN1, MAEA, RMND5A (or alternatively its paralog
CC       RMND5B), GID8, ARMC8, WDR26 and YPEL5. Within this complex, MAEA,
CC       RMND5A (or alternatively its paralog RMND5B), GID8, WDR26, and RANBP9
CC       and/or RANBP10 form the catalytic core, while GID4, MKLN1, ARMC8 and
CC       YPEL5 have ancillary roles. Interacts with F-actin.
CC       {ECO:0000250|UniProtKB:Q7L5Y9}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250|UniProtKB:Q4VC33}.
CC       Nucleus, nucleoplasm {ECO:0000250|UniProtKB:Q7L5Y9}. Nucleus matrix
CC       {ECO:0000250|UniProtKB:Q4VC33}. Cell membrane
CC       {ECO:0000250|UniProtKB:Q4VC33}. Cytoplasm, cytoskeleton
CC       {ECO:0000250|UniProtKB:Q4VC33}. Note=Detected in a nuclear, speckled-
CC       like pattern (By similarity). Localized with condensed chromatin at
CC       prophase; Detected in nuclear spindle poles at metaphase and in the
CC       contractile ring during telophase and cytokinesis (By similarity).
CC       Present in cytoplasm, nuclear matrix and at the cell surface in
CC       macrophages; predominantly nuclear in immature macrophages and
CC       predominantly detected at the cell surface in mature macrophages.
CC       Colocalizes with F-actin in macrophages (By similarity).
CC       {ECO:0000250|UniProtKB:Q4VC33, ECO:0000250|UniProtKB:Q7L5Y9}.
CC   -!- ALTERNATIVE PRODUCTS:
CC       Event=Alternative splicing; Named isoforms=3;
CC       Name=1;
CC         IsoId=Q4R9A8-1; Sequence=Displayed;
CC       Name=2;
CC         IsoId=Q4R9A8-2; Sequence=VSP_024795;
CC       Name=3;
CC         IsoId=Q4R9A8-3; Sequence=VSP_024794, VSP_024796;
CC   -!- DOMAIN: The expected RING-type zinc finger domain is highly divergent
CC       and most of the expected Cys residues are not conserved. Still, the
CC       protein is required for CTLH complex E3 ubiquitin-protein transferase
CC       activity. In addition, the conserved Cys-314 in this highly divergent
CC       region is required for ubiquitination by the yeast GID complex,
CC       suggesting a direct role in catalyzing ubiquitination.
CC       {ECO:0000250|UniProtKB:Q7L5Y9}.
CC   -!- PTM: Autoubiquitinated as component of the CTLH E3 ubiquitin-protein
CC       ligase complex (in vitro). {ECO:0000250|UniProtKB:Q7L5Y9}.
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DR   EMBL; AB047627; BAB12151.1; -; mRNA.
DR   EMBL; AB168188; BAE00313.1; -; mRNA.
DR   EMBL; AB168298; BAE00422.1; -; mRNA.
DR   AlphaFoldDB; Q4R9A8; -.
DR   SMR; Q4R9A8; -.
DR   STRING; 9541.XP_005554323.1; -.
DR   eggNOG; KOG0396; Eukaryota.
DR   Proteomes; UP000233100; Unplaced.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005856; C:cytoskeleton; IEA:UniProtKB-SubCell.
DR   GO; GO:0016363; C:nuclear matrix; IEA:UniProtKB-SubCell.
DR   GO; GO:0005654; C:nucleoplasm; ISS:UniProtKB.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0003779; F:actin binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0061630; F:ubiquitin protein ligase activity; IEA:InterPro.
DR   GO; GO:0007049; P:cell cycle; IEA:UniProtKB-KW.
DR   GO; GO:0051301; P:cell division; IEA:UniProtKB-KW.
DR   GO; GO:0043249; P:erythrocyte maturation; IEA:UniProtKB-KW.
DR   GO; GO:0043161; P:proteasome-mediated ubiquitin-dependent protein catabolic process; IEA:InterPro.
DR   InterPro; IPR013144; CRA_dom.
DR   InterPro; IPR024964; CTLH/CRA.
DR   InterPro; IPR006595; CTLH_C.
DR   InterPro; IPR027714; Fyv10/MAEA.
DR   InterPro; IPR045098; Fyv10_fam.
DR   InterPro; IPR006594; LisH.
DR   InterPro; IPR044063; ZF_RING_GID.
DR   PANTHER; PTHR12170; PTHR12170; 1.
DR   PANTHER; PTHR12170:SF2; PTHR12170:SF2; 1.
DR   Pfam; PF10607; CLTH; 1.
DR   SMART; SM00757; CRA; 1.
DR   SMART; SM00668; CTLH; 1.
DR   SMART; SM00667; LisH; 1.
DR   PROSITE; PS50897; CTLH; 1.
DR   PROSITE; PS50896; LISH; 1.
DR   PROSITE; PS51867; ZF_RING_GID; 1.
PE   2: Evidence at transcript level;
KW   Actin-binding; Alternative splicing; Cell cycle; Cell division;
KW   Cell membrane; Cytoplasm; Cytoskeleton; Erythrocyte maturation; Membrane;
KW   Metal-binding; Nucleus; Phosphoprotein; Reference proteome; Transferase;
KW   Ubl conjugation; Ubl conjugation pathway; Zinc; Zinc-finger.
FT   CHAIN           1..396
FT                   /note="E3 ubiquitin-protein transferase MAEA"
FT                   /id="PRO_0000284937"
FT   DOMAIN          121..153
FT                   /note="LisH"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00126"
FT   DOMAIN          159..216
FT                   /note="CTLH"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00058"
FT   ZN_FING         314..381
FT                   /note="RING-Gid-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01215"
FT   REGION          1..124
FT                   /note="Extracellular and involved in cell to cell contact"
FT                   /evidence="ECO:0000250|UniProtKB:Q7L5Y9"
FT   SITE            314
FT                   /note="Essential for ubiquitin ligase activity"
FT                   /evidence="ECO:0000250|UniProtKB:P40492"
FT   MOD_RES         28
FT                   /note="Phosphothreonine"
FT                   /evidence="ECO:0000250|UniProtKB:Q7L5Y9"
FT   VAR_SEQ         1..214
FT                   /note="Missing (in isoform 3)"
FT                   /evidence="ECO:0000303|Ref.1"
FT                   /id="VSP_024794"
FT   VAR_SEQ         145..242
FT                   /note="Missing (in isoform 2)"
FT                   /evidence="ECO:0000303|Ref.2"
FT                   /id="VSP_024795"
FT   VAR_SEQ         215..218
FT                   /note="LDAV -> MLFF (in isoform 3)"
FT                   /evidence="ECO:0000303|Ref.1"
FT                   /id="VSP_024796"
FT   CONFLICT        8
FT                   /note="V -> A (in Ref. 2; BAE00422)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   396 AA;  45315 MW;  32E5D1EDD47936BA CRC64;
     MAVQESAVQL SMTLKVQEYP TLKVPYETLN KRFRAAQKNI DRETSHVTMV VAELEKTLSG
     CPAVDSVVSL LDGVVEKLSV LKRKAVESIQ AEDESAKLCK RRIEHLKEHS SDQPAAASVW
     KRKRMDRMMV EHLLRCGYYN TAVKLARQSG IEDLVNIEMF LTAKEVEESL ERRETATCLA
     WCHDNKSRLR KMKSCLEFSL RIQEFIELIR QNKRLDAVRH ARKHFSQAEG SQLDEVRQAM
     GMLAFPPDTH ISPYKDLLDP ARWRMLIQQF RYDNYRLHQL GNNSVFTLTL QAGLSAIKTP
     QCYKEDGSSK SPDCPVCSRS LNKLAQPLPM AHCANSRLVC KISGDVMNEN NPPMMLPNGY
     VYGYNSLLSI RQDDKVVCPR TKEVFHFSQA EKVYIM
 
 
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