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UniProtKB/Swiss-Prot entry P27972


[Entry info] [Name and origin] [References] [Comments] [Cross-references] [Keywords] [Features] [Sequence] [Tools]

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Entry information
Entry name GAG_SIVV1
Primary accession number P27972
Secondary accession numbers None
Integrated into Swiss-Prot on August 1, 1992
Sequence was last modified on August 1, 1992 (Sequence version 1)
Annotations were last modified on    November 25, 2008 (Entry version 64)
Name and origin of the protein
Protein name Gag polyprotein
Synonym Pr55Gag
Contains Matrix protein p17
     (MA)
Capsid protein p24
     (CA)
Spacer peptide p2
Nucleocapsid protein p7
     (NC)
Spacer peptide p1
p6-gag
Gene name
Name: gag
From
Simian immunodeficiency virus agm.vervet (isolate AGM155) (SIV-agm.ver) (Simian immunodeficiency virus African green monkey vervet) [TaxID: 11727] 
Taxonomy Viruses; Retro-transcribing viruses; Retroviridae; Orthoretrovirinae; Lentivirus; Primate lentivirus group.
Virus host Cercopithecidae (Old World monkeys) [TaxID: 9527]
Protein existence 3: Inferred from homology;
References
[1]
NUCLEOTIDE SEQUENCE [GENOMIC RNA].
PubMed=2304139 [NCBI, ExPASy, EBI, Israel, Japan]
Johnson P.R., Fomsgaard A., Allan J.S., Gravell M., London W.T., Olmstead R.A., Hirsch V.M.;
"Simian immunodeficiency viruses from African green monkeys display unusual genetic diversity.";
J. Virol. 64:1086-1092(1990).
Comments
  • FUNCTION: Matrix protein p17 targets Gag and Gag-Pol polyproteins to the plasma membrane via a multipartite membrane binding signal, that includes its myristoylated N-terminus. Also mediates nuclear localization of the preintegration complex. Implicated in the release from host cell mediated by Vpu (By similarity).
  • FUNCTION: Capsid protein p24 forms the conical core of the virus that encapsulates the genomic RNA-nucleocapsid complex (By similarity).
  • FUNCTION: Nucleocapsid protein p7 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers (By similarity).
  • FUNCTION: p6-gag plays a role in budding of the assembled particle by interacting with the host class E VPS proteins TSG101 and PDCD6IP/AIP1 (By similarity).
  • SUBUNIT: Matrix protein p17 is a trimer. Interacts with gp120. p6-gag interacts with host TSG101 and PDCD6IP/AIP1 (By similarity).
  • SUBCELLULAR LOCATION: Matrix protein p17: Virion (Potential). Nucleus (By similarity). Cytoplasm (By similarity). Note=Following virus entry, the nuclear localization signal (NLS) of the matrix protein participates with Vpr to the nuclear localization of the viral genome. During virus production, the nuclear export activity of the matrix protein counteracts the NLS to maintain the Gag and Gag-Pol polyproteins in the cytoplasm, thereby directing unspliced RNA to the plasma membrane (By similarity).
  • SUBCELLULAR LOCATION: Capsid protein p24: Virion (Potential).
  • SUBCELLULAR LOCATION: Nucleocapsid protein p7: Virion (Potential).
  • ALTERNATIVE PRODUCTS: 2 named isoforms [FASTA] produced by ribosomal frameshifting. Translation results in the formation of the Gag polyprotein most of the time. Ribosomal frameshifting at the gag-pol genes boundary occurs at low frequency and produces the Gag-Pol polyprotein. This strategy of translation probably allows the virus to modulate the quantity of each viral protein. Maintenance of a correct Gag to Gag-Pol ratio is essential for RNA dimerization and viral infectivity.
    NameGag polyprotein
    Isoform IDP27972-1
    Note: Produced by conventional translation.
    This is the isoform sequence displayed in this entry.
    NameGag-Pol polyprotein
    Isoform IDP27973-1
    Note: Produced by -1 ribosomal frameshifting.
    This isoform is stored in UniProtKB/Swiss-Prot entry P27973.
  • DOMAIN: Late-budding domains (L domains) are short sequence motifs essential for viral particle release. They can occur individually or in close proximity within structural proteins. They interacts with sorting cellular proteins of the multivesicular body (MVB) pathway. Most of these proteins are class E vacuolar protein sorting factors belonging to ESCRT-I, ESCRT-II or ESCRT-III complexes. p6-gag contains two L domains: a PTAP/PSAP motif, which interacts with the UEV domain of TSG101 and a LXXLF motif which interacts with PDCD6IP/AIP1 (By similarity).
  • PTM: Capsid protein p24 is phosphorylated (By similarity).
  • PTM: Specific enzymatic cleavages by the viral protease yield mature proteins. The polyprotein is cleaved during and after budding, this process is termed maturation (By similarity).
  • SIMILARITY: Belongs to the primate lentivirus group gag polyprotein family.
  • SIMILARITY: Contains 2 CCHC-type zinc fingers.
Copyright
Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.
Cross-references
Sequence databases
EMBL
M29975; AAA91905.1; -; Genomic_RNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
3D structure databases
HSSP Q03859; 1ED1. [HSSP ENTRY / PDB]
SMR P27972; 151-360.
ModBase P27972.
Ontologies
GO
GO:0005737; Cellular component: cytoplasm (inferred from electronic annotation from UniProtKB-KW).
GO:0005634; Cellular component: nucleus (inferred from electronic annotation from UniProtKB-KW).
GO:0019028; Cellular component: viral capsid (inferred from electronic annotation from InterPro).
GO:0003723; Molecular function: RNA binding (inferred from electronic annotation from UniProtKB-KW).
GO:0005198; Molecular function: structural molecule activity (inferred from electronic annotation from InterPro).
GO:0008270; Molecular function: zinc ion binding (inferred from electronic annotation from InterPro).
GO:0044419; Biological process: interspecies interaction between organisms (inferred from electronic annotation from UniProtKB-KW).
GO:0016032; Biological process: viral reproduction (inferred from electronic annotation from InterPro).
QuickGo view.
Family and domain databases
InterPro IPR000721; Gag_p24.
IPR000071; Lentvrl_matrix_N.
IPR012344; Matrix_HIV/RSV_N.
IPR008916; Retrov_capsid_C.
IPR008919; Retrov_capsid_N.
IPR013084; Znf_CCH_retrovir.
IPR001878; Znf_CCHC.
Graphical view of domain structure.
Gene3D G3DSA:1.10.150.90; Matrix_HIV/RSV_N; 1.
G3DSA:1.10.1200.30; Retrov_capsid_C; 1.
G3DSA:1.10.375.10; Retrov_capsid_N; 1.
G3DSA:4.10.60.10; Znf_CCH_retrovir; 1.
Pfam PF00540; Gag_p17; 1.
PF00607; Gag_p24; 1.
PF00098; zf-CCHC; 2.
Pfam graphical view of domain structure.
PRINTS PR00939; C2HCZNFINGER.
PR00234; HIV1MATRIX.
SMART SM00343; ZnF_C2HC; 2.
SMART graphical view of domain structure.
PROSITE PS50158; ZF_CCHC; 2.
PROSITE graphical view of domain structure (profiles).
Other
ProtoNet P27972.
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
Capsid protein; Cytoplasm; Host-virus interaction; Lipoprotein; Metal-binding; Myristate; Nucleus; Phosphoprotein; Repeat; Ribosomal frameshifting; RNA-binding; Viral nucleoprotein; Virion; Zinc; Zinc-finger.
Features
SEVIEWER logo Feature table viewer FT aligner logo Feature aligner
KeyFrom   To Length Description FTId
INIT_MET   1     1        Removed; by host (By similarity). 
CHAIN   2   520  519     Gag polyprotein (By similarity). PRO_0000316105
CHAIN   2   141  140     Matrix protein p17 (By similarity). PRO_0000038619
CHAIN   142   372  231     Capsid protein p24 (By similarity). PRO_0000038620
PEPTIDE   373   386  14     Spacer peptide p2 (By similarity). PRO_0000316106
CHAIN   387   439  53     Nucleocapsid protein p7 (By similarity). PRO_0000038621
PEPTIDE   440   454  15     Spacer peptide p1 (By similarity). PRO_0000316107
CHAIN   482   520  39     p6-gag (By similarity). PRO_0000316108
ZN_FING   398   415  18     CCHC-type 1. 
ZN_FING   419   436  18     CCHC-type 2. 
MOTIF   16    22  7     Nuclear export signal (By similarity). 
MOTIF   26    32  7     Nuclear localization signal (By similarity). 
MOTIF   489   491  3     PTAP motif (By similarity). 
MOTIF   512   516  5     LXXLF motif (By similarity). 
SITE   439   440  2     Cleavage; by viral protease (By similarity). 
LIPID   2     2        N-myristoyl glycine; by host (By similarity). 
Sequence information
Length: 520 AA [This is the length of the unprocessed precursor] Molecular weight: 57735 Da [This is the MW of the unprocessed precursor] CRC64: 2FE1B7D0E484D414 [This is a checksum on the sequence]
        10         20         30         40         50         60 
MGAATSALNR RQLDEFEHIR LRPNGKKKYQ IKHLIWAGKK MDRFGLHEKL LETEEGCKKI 

        70         80         90        100        110        120 
IEVLSPLEPT GSEGMKSLYN LVCVLLCVHQ EKKVKDTEEA LAIVRQCCHL VDKEKTAVTP 

       130        140        150        160        170        180 
PGGQQKNNTG GTATPGGSQN FPAQQQGNAW VHVPLSPRTL NAWVKAVEEK KFGAEIVPMF 

       190        200        210        220        230        240 
QALSEGCTPY DINQMLNVLG DHQGALQIVK EIINEEAAQW DVTHPPPAGP LPAGQLRDPG 

       250        260        270        280        290        300 
GSDIAGTTST VQEQLEWIYT ANPRVDVGAI YRRWIILGLQ KCVKMYNPVS VLDIRQGPKE 

       310        320        330        340        350        360 
PFKDYVDRFY KAIRAEQASG EVKQWMTESL LIQNANPDCK VILKGLGMHP TLEEMLTACQ 

       370        380        390        400        410        420 
GVGGPSYKAK VMAEMMQNLQ SQNMVQQGGG RGRPRPPPKC YNCGKFGHMQ RQCPEPRKIK 

       430        440        450        460        470        480 
CLKCGKPGHL AKDCRGQVNF LGYGRWMGTK PRNFPAATLG AEPSAPPPPN NSTPYDPAKK 

       490        500        510        520 
LLQQYAEKGK QMRNQNRNPP ANNPDWNEGY SLNSLFGEDQ 

P27972 in FASTA format

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