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GLYC_CPXVB
ID   GLYC_CPXVB              Reviewed;         480 AA.
AC   Q8B115;
DT   20-JAN-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   03-AUG-2022, entry version 69.
DE   RecName: Full=Pre-glycoprotein polyprotein GP complex {ECO:0000255|HAMAP-Rule:MF_04084};
DE            Short=Pre-GP-C {ECO:0000255|HAMAP-Rule:MF_04084};
DE   Contains:
DE     RecName: Full=Stable signal peptide {ECO:0000255|HAMAP-Rule:MF_04084};
DE              Short=SSP {ECO:0000255|HAMAP-Rule:MF_04084};
DE   Contains:
DE     RecName: Full=Glycoprotein G1 {ECO:0000255|HAMAP-Rule:MF_04084};
DE              Short=GP1 {ECO:0000255|HAMAP-Rule:MF_04084};
DE   Contains:
DE     RecName: Full=Glycoprotein G2 {ECO:0000255|HAMAP-Rule:MF_04084};
DE              Short=GP2 {ECO:0000255|HAMAP-Rule:MF_04084};
GN   Name=GPC {ECO:0000255|HAMAP-Rule:MF_04084}; Synonyms=GP-C;
OS   Cupixi mammarenavirus (isolate Rat/Brasil/BeAn 119303/1970) (CPXV).
OC   Viruses; Riboviria; Orthornavirae; Negarnaviricota; Polyploviricotina;
OC   Ellioviricetes; Bunyavirales; Arenaviridae; Mammarenavirus.
OX   NCBI_TaxID=208899;
OH   NCBI_TaxID=89099; Hylaeamys megacephalus (Large-headed rice rat) (Oryzomys megacephalus).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RC   STRAIN=BeAn 119303;
RX   PubMed=12207889; DOI=10.1016/s0006-291x(02)02053-3;
RA   Charrel R.N., Feldmann H., Fulhorst C.F., Khelifa R., de Chesse R.,
RA   de Lamballerie X.;
RT   "Phylogeny of New World arenaviruses based on the complete coding sequences
RT   of the small genomic segment identified an evolutionary lineage produced by
RT   intrasegmental recombination.";
RL   Biochem. Biophys. Res. Commun. 296:1118-1124(2002).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RC   STRAIN=BeAn 119303;
RX   PubMed=18602020; DOI=10.1016/j.mib.2008.06.001;
RA   Charrel R.N., de Lamballerie X., Emonet S.;
RT   "Phylogeny of the genus Arenavirus.";
RL   Curr. Opin. Microbiol. 11:362-368(2008).
CC   -!- FUNCTION: [Glycoprotein G2]: Class I viral fusion protein that directs
CC       fusion of viral and host endosomal membranes, leading to delivery of
CC       the nucleocapsid into the cytoplasm. Membrane fusion is mediated by
CC       irreversible conformational changes induced upon acidification in the
CC       endosome. {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- FUNCTION: Stable signal peptide (SSP): cleaved and functions as a
CC       signal peptide. In addition, it is also retained as the third component
CC       of the GP complex. The SSP is required for efficient glycoprotein
CC       expression, post-translational maturation cleavage of GP1 and GP2,
CC       glycoprotein transport to the cell surface plasma membrane, formation
CC       of infectious virus particles, and acid pH-dependent glycoprotein-
CC       mediated cell fusion. {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- FUNCTION: [Glycoprotein G1]: Interacts with the host receptor.
CC       {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- SUBUNIT: [Glycoprotein G1]: Homotetramer; disulfide-linked.
CC       {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- SUBUNIT: [Glycoprotein G2]: Homotetramer. GP2 homotetramers bind
CC       through ionic interactions with GP1 homotetramers to form the GP
CC       complex together with the stable signal peptide. The GP-C polyprotein
CC       interacts with the host protease MBTPS1/SKI-1 resulting in the
CC       polyprotein processing. {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- SUBCELLULAR LOCATION: [Glycoprotein G1]: Virion membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Peripheral membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host endoplasmic reticulum membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Peripheral membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host Golgi apparatus membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Peripheral membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host cell membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Peripheral membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- SUBCELLULAR LOCATION: [Glycoprotein G2]: Virion membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host endoplasmic reticulum membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host Golgi apparatus membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host cell membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Note=Binding to the stable signal
CC       peptide masks endogenous ER localization signals in the cytoplasmic
CC       domain of G2 to ensure that only the fully assembled, tripartite GP
CC       complex is transported for virion assembly. {ECO:0000255|HAMAP-
CC       Rule:MF_04084}.
CC   -!- SUBCELLULAR LOCATION: [Stable signal peptide]: Virion membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host endoplasmic reticulum membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host Golgi apparatus membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}. Host cell membrane
CC       {ECO:0000255|HAMAP-Rule:MF_04084}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- DOMAIN: The cytoplasmic domain of GP2 plays a role in ER location. It
CC       also contains a zinc-binding domain that allows SSP retention in the
CC       GPC complex by accepting a cysteine from SSP as the fourth ligand.
CC       {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- PTM: Specific enzymatic cleavages in vivo yield mature proteins. GP-C
CC       polyprotein is cleaved in the endoplasmic reticulum by the host
CC       protease MBTPS1. Only cleaved glycoprotein is incorporated into
CC       virions. {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- PTM: The SSP remains stably associated with the GP complex following
CC       cleavage by signal peptidase and plays crucial roles in the trafficking
CC       of GP through the secretory pathway. {ECO:0000255|HAMAP-Rule:MF_04084}.
CC   -!- SIMILARITY: Belongs to the arenaviridae GPC protein family.
CC       {ECO:0000255|HAMAP-Rule:MF_04084}.
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DR   EMBL; AF512832; AAN32963.1; -; Genomic_RNA.
DR   RefSeq; YP_001649222.1; NC_010254.1.
DR   SMR; Q8B115; -.
DR   PRIDE; Q8B115; -.
DR   GeneID; 5848389; -.
DR   KEGG; vg:5848389; -.
DR   Proteomes; UP000008164; Genome.
DR   GO; GO:0044167; C:host cell endoplasmic reticulum membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0044178; C:host cell Golgi membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0020002; C:host cell plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:0019031; C:viral envelope; IEA:UniProtKB-UniRule.
DR   GO; GO:0055036; C:virion membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0039654; P:fusion of virus membrane with host endosome membrane; IEA:UniProtKB-UniRule.
DR   GO; GO:0019065; P:receptor-mediated endocytosis of virus by host cell; IEA:UniProtKB-UniRule.
DR   GO; GO:0019062; P:virion attachment to host cell; IEA:UniProtKB-UniRule.
DR   Gene3D; 2.20.28.180; -; 1.
DR   HAMAP; MF_04084; ARENA_GPC; 1.
DR   InterPro; IPR001535; Arena_glycoprot.
DR   InterPro; IPR043015; Arena_glycoprot_zinc-bd.
DR   Pfam; PF00798; Arena_glycoprot; 2.
DR   PIRSF; PIRSF004028; GPC_ArenaV; 1.
PE   3: Inferred from homology;
KW   Disulfide bond; Fusion of virus membrane with host endosomal membrane;
KW   Fusion of virus membrane with host membrane; Glycoprotein;
KW   Host cell membrane; Host endoplasmic reticulum; Host Golgi apparatus;
KW   Host membrane; Host-virus interaction; Lipoprotein; Membrane;
KW   Metal-binding; Myristate; Transmembrane; Transmembrane helix;
KW   Viral attachment to host cell; Viral envelope protein;
KW   Viral penetration into host cytoplasm; Virion; Virus endocytosis by host;
KW   Virus entry into host cell; Zinc.
FT   INIT_MET        1
FT                   /note="Removed; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CHAIN           2..480
FT                   /note="Pre-glycoprotein polyprotein GP complex"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT                   /id="PRO_0000361584"
FT   CHAIN           2..58
FT                   /note="Stable signal peptide"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT                   /id="PRO_0000361585"
FT   CHAIN           59..246
FT                   /note="Glycoprotein G1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT                   /id="PRO_0000361586"
FT   CHAIN           247..480
FT                   /note="Glycoprotein G2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT                   /id="PRO_0000361587"
FT   TOPO_DOM        2..17
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   TRANSMEM        18..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   TOPO_DOM        33
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   TRANSMEM        34..53
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   TOPO_DOM        54..58
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   TOPO_DOM        59..419
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   TRANSMEM        420..440
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   TOPO_DOM        441..480
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   BINDING         57
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   BINDING         442
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   BINDING         444
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   BINDING         450
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   BINDING         454
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   BINDING         462
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   BINDING         464
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   BINDING         480
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   SITE            58..59
FT                   /note="Cleavage; by host signal peptidase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   SITE            246..247
FT                   /note="Cleavage; by host MBTPS1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   LIPID           2
FT                   /note="N-myristoyl glycine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        88
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        99
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        125
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        174
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        214
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        315
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        352
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        360
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        377
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   CARBOHYD        382
FT                   /note="N-linked (GlcNAc...) asparagine; by host"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   DISULFID        85..221
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   DISULFID        266..279
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   DISULFID        288..297
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
FT   DISULFID        351..372
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04084"
SQ   SEQUENCE   480 AA;  54994 MW;  339A38E40EB01670 CRC64;
     MGQLVSFFQE IPVFFQEALN IALAVVTLLA IVKGVLNLWK SGLFQLLMFL ILAGRSCSFR
     IGYHTSFESF TMTIGGVFHE LPALCKVNDT YNLVRLSHNS SLALSVEYGD TGTVMCEHGH
     VVSGNYTECT GASEEYNWVL DWVLRGLQHD FSRDPVICCE PKKKTNAEFQ FRLNLTQRHK
     GDHYQNKIKT ALTHLFGPFA YNEKDPKIFV TMRNTTWTNQ CVMSHTDSLR LLASNGGNSF
     SGRGLKAFFS WSLSDSTGVD MPGGYCLEKW MLIASELKCF GNTALAKCNL KHDSEFCDMI
     KLFDFNKNAI SKLNNNTIEA VNQLTKTVNS LISDNLLMKN RLRELLKVPY CNYTRFWYVN
     HTRTGEHSLP KCWLVNNGSY LNESDFRNEW ILESDHLISE MLSKEYQERQ GRTPLTLVDL
     CFWSAVFYTT TLFLHLVGFP THRHISGEPC PLPHRLNRHG ACNCGRFKRL KKPLVWYKHH
 
 
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