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Protein

Gag polyprotein

Gene

gag

Organism
Friend murine leukemia virus (isolate PVC-211) (FrMLV)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Protein inferred from homologyi

Functioni

Gag polyprotein plays a role in budding and is processed by the viral protease during virion maturation outside the cell. During budding, it recruits, in a PPXY-dependent or independent manner, Nedd4-like ubiquitin ligases that conjugate ubiquitin molecules to Gag, or to Gag binding host factors. Interaction with HECT ubiquitin ligases probably link the viral protein to the host ESCRT pathway and facilitate release (By similarity).By similarity
Matrix protein p15 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 (By similarity).By similarity
Capsid protein p30 forms the spherical core of the virion that encapsulates the genomic RNA-nucleocapsid complex.By similarity
Nucleocapsid protein p10 is involved in the packaging and encapsidation of two copies of the genome. Binds with high affinity to conserved UCUG elements within the packaging signal, located near the 5'-end of the genome. This binding is dependent on genome dimerization (By similarity).By similarity

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sitei131 – 1322Cleavage; by viral protease p14By similarity
Sitei215 – 2162Cleavage; by viral protease p14By similarity
Sitei478 – 4792Cleavage; by viral protease p14By similarity

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Zinc fingeri502 – 51918CCHC-typePROSITE-ProRule annotationAdd
BLAST

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Host-virus interaction, Viral budding, Viral budding via the host ESCRT complexes, Virus exit from host cell

Keywords - Ligandi

Metal-binding, RNA-binding, Viral nucleoprotein, Zinc

Names & Taxonomyi

Protein namesi
Recommended name:
Gag polyprotein
Alternative name(s):
Core polyprotein
Cleaved into the following 4 chains:
Gene namesi
Name:gag
OrganismiFriend murine leukemia virus (isolate PVC-211) (FrMLV)
Taxonomic identifieri11798 [NCBI]
Taxonomic lineageiVirusesRetro-transcribing virusesRetroviridaeOrthoretrovirinaeGammaretrovirusMurine leukemia virus
Virus hostiMus musculus (Mouse) [TaxID: 10090]
ProteomesiUP000007777 Componenti: Genome

Subcellular locationi

Gag polyprotein :

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Capsid protein, Host cell membrane, Host endosome, Host membrane, Membrane, Viral matrix protein, Virion

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methioninei1 – 11Removed; by hostBy similarity
Chaini2 – 538537Gag polyproteinBy similarityPRO_0000390813Add
BLAST
Chaini2 – 131130Matrix protein p15Sequence AnalysisPRO_0000040904Add
BLAST
Chaini132 – 21584RNA-binding phosphoprotein p12Sequence AnalysisPRO_0000040905Add
BLAST
Chaini216 – 478263Capsid protein p30Sequence AnalysisPRO_0000040906Add
BLAST
Chaini479 – 53860Nucleocapsid protein p10Sequence AnalysisPRO_0000040907Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Lipidationi2 – 21N-myristoyl glycine; by hostBy similarity
Modified residuei192 – 1921Phosphoserine; by hostBy similarity

Post-translational modificationi

Specific enzymatic cleavages by the viral protease yield mature proteins. The protease is released by autocatalytic cleavage. The polyprotein is cleaved during and after budding, this process is termed maturation (By similarity).By similarity
RNA-binding phosphoprotein p12 is phosphorylated on serine residues.By similarity

Keywords - PTMi

Lipoprotein, Myristate, Phosphoprotein

Interactioni

Subunit structurei

Capsid protein p30 is a homohexamer, that further associates as homomultimer. The virus core is composed of a lattice formed from hexagonal rings, each containing six capsid monomers (By similarity).By similarity

Structurei

3D structure databases

ProteinModelPortaliP26805.
SMRiP26805. Positions 2-98, 216-346, 352-382, 479-534.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Coiled coil

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Coiled coili438 – 47841Sequence AnalysisAdd
BLAST

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi111 – 1144PTAP/PSAP motif
Motifi130 – 1345LYPX(n)L motif
Motifi162 – 1654PPXY motif

Domaini

Late-budding domains (L domains) are short sequence motifs essential for viral particle budding. They recruit proteins of the host ESCRT machinery (Endosomal Sorting Complex Required for Transport) or ESCRT-associated proteins. RNA-binding phosphoprotein p12 contains one L domain: a PPXY motif which potentially interacts with the WW domain 3 of NEDD4 E3 ubiquitin ligase. Matrix protein p15 contains one L domain: a PTAP/PSAP motif, which potentially interacts with the UEV domain of TSG101. The junction between the matrix protein p15 and RNA-binding phosphoprotein p12 also contains one L domain: a LYPX(n)L motif which potentially interacts with PDCD6IP (By similarity).By similarity

Sequence similaritiesi

Contains 1 CCHC-type zinc finger.PROSITE-ProRule annotation

Zinc finger

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Zinc fingeri502 – 51918CCHC-typePROSITE-ProRule annotationAdd
BLAST

Keywords - Domaini

Coiled coil, Zinc-finger

Family and domain databases

Gene3Di1.10.150.180. 1 hit.
1.10.375.10. 1 hit.
4.10.60.10. 1 hit.
InterProiIPR000840. G_retro_matrix.
IPR002079. Gag_p12.
IPR003036. Gag_P30.
IPR008919. Retrov_capsid_N.
IPR010999. Retrovr_matrix.
IPR001878. Znf_CCHC.
[Graphical view]
PfamiPF01140. Gag_MA. 1 hit.
PF01141. Gag_p12. 1 hit.
PF02093. Gag_p30. 1 hit.
PF00098. zf-CCHC. 1 hit.
[Graphical view]
SMARTiSM00343. ZnF_C2HC. 1 hit.
[Graphical view]
SUPFAMiSSF47836. SSF47836. 1 hit.
SSF47943. SSF47943. 1 hit.
SSF57756. SSF57756. 1 hit.
PROSITEiPS50158. ZF_CCHC. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P26805-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MGQTATTPLS LTLDHWKDVE RTAHNQSVEV RKRRWVTFCS AEWPTFNVGW
60 70 80 90 100
PRDGTFNPDI ITQVKIKVFS PGPHGHPDQV PYIVTWEALA VDPPPWVKPF
110 120 130 140 150
VHPKPPLLLP PSAPSLPPEP PLSTPPQSSL YPALTSPLNT KPRPQVLPDS
160 170 180 190 200
GGPLIDLLTE DPPPYRDPGP PSPDGKGDSG EVAPTEGAPD SSPMVSRLRG
210 220 230 240 250
RREPPVADST TSQAFPLRLG GNGQFQYWPF SSSDLYNWKN NNPSFSEDPG
260 270 280 290 300
KLTALIESVL LTHQPTWDDC QQLLGTLLTG EEKQRVLLEA RKAVRGEDGR
310 320 330 340 350
PTQLPNDIND AFPLERPDWD YNTQRGRNHL VHYRQLLLAG LQNAGRSPTN
360 370 380 390 400
LAKVKGITQG PNESPSAFLE RLKEAYRRYT PYDPEDPGQE TNVSMSFIWQ
410 420 430 440 450
SAPDIGRKLE RLEDLKNKTL GDLVREAEKI FNKRETPEER EERVRRETEE
460 470 480 490 500
KEERRRAEDE RREKERDRRR HREMSKLLAT VVSGQRQDRQ GGERRRPQLD
510 520 530
HDQCAYCKEK GHWARDCPKK PRGPRGPRPQ ASLLTLDD
Length:538
Mass (Da):61,033
Last modified:January 23, 2007 - v3
Checksum:i2FF9F97D2C79DEBE
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M93134 Genomic RNA. Translation: AAA46476.1.
PIRiS35474.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M93134 Genomic RNA. Translation: AAA46476.1.
PIRiS35474.

3D structure databases

ProteinModelPortaliP26805.
SMRiP26805. Positions 2-98, 216-346, 352-382, 479-534.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di1.10.150.180. 1 hit.
1.10.375.10. 1 hit.
4.10.60.10. 1 hit.
InterProiIPR000840. G_retro_matrix.
IPR002079. Gag_p12.
IPR003036. Gag_P30.
IPR008919. Retrov_capsid_N.
IPR010999. Retrovr_matrix.
IPR001878. Znf_CCHC.
[Graphical view]
PfamiPF01140. Gag_MA. 1 hit.
PF01141. Gag_p12. 1 hit.
PF02093. Gag_p30. 1 hit.
PF00098. zf-CCHC. 1 hit.
[Graphical view]
SMARTiSM00343. ZnF_C2HC. 1 hit.
[Graphical view]
SUPFAMiSSF47836. SSF47836. 1 hit.
SSF47943. SSF47943. 1 hit.
SSF57756. SSF57756. 1 hit.
PROSITEiPS50158. ZF_CCHC. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Complete nucleotide sequence of a neuropathogenic variant of Friend murine leukemia virus PVC-211."
    Remington M.P., Hoffman P.M., Ruscetti S.K., Masuda M.
    Nucleic Acids Res. 20:3249-3249(1992) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA].

Entry informationi

Entry nameiGAG_MLVFP
AccessioniPrimary (citable) accession number: P26805
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 1, 1992
Last sequence update: January 23, 2007
Last modified: January 7, 2015
This is version 102 of the entry and version 3 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.