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UniProtKB - Q1A267 (POL_SIVMB)

Entry version 107 (02 Jun 2021)
Sequence version 4 (02 Oct 2007)
Previous versions | rss
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Protein

Gag-Pol polyprotein

Gene

gag-pol

Organism
Simian immunodeficiency virus (isolate MB66) (SIV-cpz) (Chimpanzee immunodeficiency virus)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Protein inferred from homologyi <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Gag-Pol polyprotein and Gag polyprotein may regulate their own translation, by the binding genomic RNA in the 5'-UTR. At low concentration, Gag-Pol and Gag would promote translation, whereas at high concentration, the polyproteins encapsidate genomic RNA and then shutt off translation (By similarity).

By similarity

Matrix protein p17 has two main functions: in infected cell, it targets Gag and Gag-pol polyproteins to the plasma membrane via a multipartite membrane-binding signal, that includes its myristointegration complex. The myristoylation signal and the NLS exert conflicting influences its subcellular localization. The key regulation of these motifs might be phosphorylation of a portion of MA molecules on the C-terminal tyrosine at the time of virus maturation, by virion-associated cellular tyrosine kinase. Implicated in the release from host cell mediated by Vpu (By similarity).

By similarity

Capsid protein p24 forms the conical core that encapsulates the genomic RNA-nucleocapsid complex in the virion. The core is constituted by capsid protein hexamer subunits. The core is disassembled soon after virion entry. Interaction with host PPIA/CYPA protects the virus from restriction by host TRIM5-alpha and from an unknown antiviral activity in host cells. This capsid restriction by TRIM5 is one of the factors which restricts SIV to the simian species (By similarity).

By similarity

Nucleocapsid protein p7 encapsulates and protects viral dimeric unspliced (genomic) RNA. Binds these RNAs through its zinc fingers. Facilitates rearangement of nucleic acid secondary structure during retrotranscription of genomic RNA. This capability is referred to as nucleic acid chaperone activity (By similarity).

By similarity

The aspartyl protease mediates proteolytic cleavages of Gag and Gag-Pol polyproteins during or shortly after the release of the virion from the plasma membrane. Cleavages take place as an ordered, step-wise cascade to yield mature proteins. This process is called maturation. Displays maximal activity during the budding process just prior to particle release from the cell. Also cleaves Nef and Vif, probably concomitantly with viral structural proteins on maturation of virus particles. Hydrolyzes host EIF4GI and PABP1 in order to shut off the capped cellular mRNA translation. The resulting inhibition of cellular protein synthesis serves to ensure maximal viral gene expression and to evade host immune response (By similarity).

PROSITE-ProRule annotation

Reverse transcriptase/ribonuclease H (RT) is a multifunctional enzyme that converts the viral dimeric RNA genome into dsDNA in the cytoplasm, shortly after virus entry into the cell. This enzyme displays a DNA polymerase activity that can copy either DNA or RNA templates, and a ribonuclease H (RNase H) activity that cleaves the RNA strand of RNA-DNA heteroduplexes in a partially processive 3' to 5' endonucleasic mode. Conversion of viral genomic RNA into dsDNA requires many steps. A tRNA binds to the primer-binding site (PBS) situated at the 5'-end of the viral RNA. RT uses the 3' end of the tRNA primer to perform a short round of RNA-dependent minus-strand DNA synthesis. The reading proceeds through the U5 region and ends after the repeated (R) region which is present at both ends of viral RNA. The portion of the RNA-DNA heteroduplex is digested by the RNase H, resulting in a ssDNA product attached to the tRNA primer. This ssDNA/tRNA hybridizes with the identical R region situated at the 3' end of viral RNA. This template exchange, known as minus-strand DNA strong stop transfer, can be either intra- or intermolecular. RT uses the 3' end of this newly synthesized short ssDNA to perform the RNA-dependent minus-strand DNA synthesis of the whole template. RNase H digests the RNA template except for two polypurine tracts (PPTs) situated at the 5'-end and near the center of the genome. It is not clear if both polymerase and RNase H activities are simultaneous. RNase H can probably proceed both in a polymerase-dependent (RNA cut into small fragments by the same RT performing DNA synthesis) and a polymerase-independent mode (cleavage of remaining RNA fragments by free RTs). Secondly, RT performs DNA-directed plus-strand DNA synthesis using the PPTs that have not been removed by RNase H as primers. PPTs and tRNA primers are then removed by RNase H. The 3' and 5' ssDNA PBS regions hybridize to form a circular dsDNA intermediate. Strand displacement synthesis by RT to the PBS and PPT ends produces a blunt ended, linear dsDNA copy of the viral genome that includes long terminal repeats (LTRs) at both ends (By similarity).

By similarity

Integrase catalyzes viral DNA integration into the host chromosome, by performing a series of DNA cutting and joining reactions. This enzyme activity takes place after virion entry into a cell and reverse transcription of the RNA genome in dsDNA. The first step in the integration process is 3' processing. This step requires a complex comprising the viral genome, matrix protein, Vpr and integrase. This complex is called the pre-integration complex (PIC). The integrase protein removes 2 nucleotides from each 3' end of the viral DNA, leaving recessed CA OH's at the 3' ends. In the second step, the PIC enters cell nucleus. This process is mediated through integrase and Vpr proteins, and allows the virus to infect a non dividing cell. This ability to enter the nucleus is specific of lentiviruses, other retroviruses cannot and rely on cell division to access cell chromosomes. In the third step, termed strand transfer, the integrase protein joins the previously processed 3' ends to the 5' ends of strands of target cellular DNA at the site of integration. The 5'-ends are produced by integrase-catalyzed staggered cuts, 5 bp apart. A Y-shaped, gapped, recombination intermediate results, with the 5'-ends of the viral DNA strands and the 3' ends of target DNA strands remaining unjoined, flanking a gap of 5 bp. The last step is viral DNA integration into host chromosome. This involves host DNA repair synthesis in which the 5 bp gaps between the unjoined strands are filled in and then ligated. Since this process occurs at both cuts flanking the SIV genome, a 5 bp duplication of host DNA is produced at the ends of SIV integration. Alternatively, Integrase may catalyze the excision of viral DNA just after strand transfer, this is termed disintegration (By similarity).

By similarity

Miscellaneous

The reverse transcriptase is an error-prone enzyme that lacks a proof-reading function. High mutations rate is a direct consequence of this characteristic. RT also displays frequent template switching leading to high recombination rate. Recombination mostly occurs between homologous regions of the two copackaged RNA genomes. If these two RNA molecules derive from different viral strains, reverse transcription will give rise to highly recombinated proviral DNAs.

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

  • Specific for a P1 residue that is hydrophobic, and P1' variable, but often Pro.PROSITE-ProRule annotation EC:3.4.23.16
  • Endohydrolysis of RNA in RNA/DNA hybrids. Three different cleavage modes: 1. sequence-specific internal cleavage of RNA. Human immunodeficiency virus type 1 and Moloney murine leukemia virus enzymes prefer to cleave the RNA strand one nucleotide away from the RNA-DNA junction. 2. RNA 5'-end directed cleavage 13-19 nucleotides from the RNA end. 3. DNA 3'-end directed cleavage 15-20 nucleotides away from the primer terminus. EC:3.1.26.13
  • 3'-end directed exonucleolytic cleavage of viral RNA-DNA hybrid. EC:3.1.13.2

<p>This subsection of the 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Protein has several cofactor binding sites:

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

The viral protease is inhibited by many synthetic protease inhibitors (PIs), such as amprenavir, atazanavir, indinavir, loprinavir, nelfinavir, ritonavir and saquinavir. RT can be inhibited either by nucleoside RT inhibitors (NRTIs) or by non nucleoside RT inhibitors (NNRTIs). NRTIs act as chain terminators, whereas NNRTIs inhibit DNA polymerization by binding a small hydrophobic pocket near the RT active site and inducing an allosteric change in this region. Classical NRTIs are abacavir, adefovir (PMEA), didanosine (ddI), lamivudine (3TC), stavudine (d4T), tenofovir (PMPA), zalcitabine (ddC), and zidovudine (AZT). Classical NNRTIs are atevirdine (BHAP U-87201E), delavirdine, efavirenz (DMP-266), emivirine (I-EBU), and nevirapine (BI-RG-587). The tritherapies used as a basic effective treatment of AIDS associate two NRTIs and one NNRTI. Use of protease inhibitors in tritherapy regimens permit more ambitious therapeutic strategies.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections ('Function', 'PTM / Processing', 'Pathology and Biotech') according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei219 – 220Cis/trans isomerization of proline peptide bond; by human PPIA/CYPABy similarity2
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei512For protease activity; shared with dimeric partnerPROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi696Magnesium; catalytic; for reverse transcriptase activityBy similarity1
Metal bindingi771Magnesium; catalytic; for reverse transcriptase activityBy similarity1
Metal bindingi772Magnesium; catalytic; for reverse transcriptase activityBy similarity1
Sitei987Essential for RT p66/p51 heterodimerizationBy similarity1
Sitei1000Essential for RT p66/p51 heterodimerizationBy similarity1
Metal bindingi1029Magnesium; catalytic; for RNase H activityBy similarity1
Metal bindingi1064Magnesium; catalytic; for RNase H activityBy similarity1
Metal bindingi1084Magnesium; catalytic; for RNase H activityBy similarity1
Metal bindingi1135Magnesium; catalytic; for RNase H activityBy similarity1
Metal bindingi1210Magnesium; catalytic; for integrase activityBy similarity1
Metal bindingi1262Magnesium; catalytic; for integrase activityBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section specifies the position(s) and type(s) of zinc fingers within the protein.<p><a href='/help/zn_fing' target='_top'>More...</a></p>Zinc fingeri385 – 402CCHC-type 1PROSITE-ProRule annotationAdd BLAST18
Zinc fingeri406 – 423CCHC-type 2PROSITE-ProRule annotationAdd BLAST18
Zinc fingeri1149 – 1190Integrase-typePROSITE-ProRule annotationAdd BLAST42
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section specifies the position and type of each DNA-binding domain present within the protein.<p><a href='/help/dna_bind' target='_top'>More...</a></p>DNA bindingi1369 – 1416Integrase-typePROSITE-ProRule annotationAdd BLAST48

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionAspartyl protease, DNA-binding, DNA-directed DNA polymerase, Endonuclease, Hydrolase, Multifunctional enzyme, Nuclease, Nucleotidyltransferase, Protease, RNA-binding, RNA-directed DNA polymerase, Transferase, Viral nucleoprotein
Biological processDNA integration, DNA recombination, Eukaryotic host gene expression shutoff by virus, Eukaryotic host translation shutoff by virus, Host gene expression shutoff by virus, Host-virus interaction, Viral genome integration, Viral penetration into host nucleus, Viral release from host cell, Virion maturation, Virus entry into host cell
LigandMagnesium, Metal-binding, Zinc

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Gag-Pol polyprotein
Alternative name(s):
Pr160Gag-Pol
Cleaved into the following 9 chains:
Matrix protein p17
Short name:
MA
Capsid protein p24
Short name:
CA
Nucleocapsid protein p7
Short name:
NC
p6-pol
Short name:
p6*
Protease (EC:3.4.23.16)
Alternative name(s):
PR
Retropepsin
Reverse transcriptase/ribonuclease H (EC:2.7.7.49, EC:2.7.7.7, EC:3.1.26.13)
Alternative name(s):
Exoribonuclease H (EC:3.1.13.2)
p66 RT
p51 RT
p15
Integrase (EC:2.7.7.-By similarity, EC:3.1.-.-By similarity)
Short name:
IN
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:gag-pol
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiSimian immunodeficiency virus (isolate MB66) (SIV-cpz) (Chimpanzee immunodeficiency virus)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri388911 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiViruses › Riboviria › Pararnavirae › Artverviricota › Revtraviricetes › Ortervirales › Retroviridae › Orthoretrovirinae › Lentivirus ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section only exists in viral entries and indicates the host(s) either as a specific organism or taxonomic group of organisms that are susceptible to be infected by a virus.<p><a href='/help/virus_host' target='_top'>More...</a></p>Virus hostiPan troglodytes (Chimpanzee) [TaxID: 9598]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000009152 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Genome

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

  • Virion Curated
  • Host nucleus By similarity
  • Host cytoplasm By similarity
  • Host cell membrane Curated; Lipid-anchor Curated
    • 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).By similarity

Keywords - Cellular componenti

Capsid protein, Host cell membrane, Host cytoplasm, Host membrane, Host nucleus, Membrane, Virion

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemoved; by hostBy similarity
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00002613032 – 1438Gag-Pol polyproteinAdd BLAST1437
ChainiPRO_00002493852 – 130Matrix protein p17By similarityAdd BLAST129
ChainiPRO_0000249386131 – 361Capsid protein p24By similarityAdd BLAST231
ChainiPRO_0000249387362 – 428Nucleocapsid protein p7By similarityAdd BLAST67
ChainiPRO_0000249389429 – 487p6-polSequence analysisAdd BLAST59
ChainiPRO_0000249390488 – 586ProteaseBy similarityAdd BLAST99
ChainiPRO_0000249391587 – 1146Reverse transcriptase/ribonuclease HBy similarityAdd BLAST560
ChainiPRO_0000249392587 – 1026p51 RTBy similarityAdd BLAST440
ChainiPRO_00002493931027 – 1146p15By similarityAdd BLAST120
ChainiPRO_00002493941147 – 1438IntegraseBy similarityAdd BLAST292

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section specifies the position(s) and the type of covalently attached lipid group(s).<p><a href='/help/lipid' target='_top'>More...</a></p>Lipidationi2N-myristoyl glycine; by hostBy similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>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. Proteolytic cleavage of p66 RT removes the RNase H domain to yield the p51 RT subunit.PROSITE-ProRule annotation
Capsid protein p24 is phosphorylated.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sitei130 – 131Cleavage; by viral proteaseBy similarity2
Sitei361 – 362Cleavage; by viral proteaseBy similarity2
Sitei428 – 429Cleavage; by viral proteaseBy similarity2
Sitei487 – 488Cleavage; by viral proteaseBy similarity2
Sitei586 – 587Cleavage; by viral proteaseBy similarity2
Sitei1026 – 1027Cleavage; by viral protease; partialBy similarity2
Sitei1146 – 1147Cleavage; by viral proteaseBy similarity2

Keywords - PTMi

Lipoprotein, Myristate, Phosphoprotein

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homotrimer.

Interacts with gp41 (via C-terminus).

By similarity

Homodimer. The active site consists of two apposed aspartic acid residues.

By similarity

Heterodimer of p66 RT and p51 RT (RT p66/p51). Heterodimerization of RT is essential for DNA polymerase activity. Despite the sequence identities, p66 RT and p51 RT have distinct folding.

By similarity

Homotetramer; may further associate as a homohexadecamer (By similarity).

By similarity

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		Q1A267

Database of comparative protein structure models

More...ModBasei		Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini507 – 576Peptidase A2PROSITE-ProRule annotationAdd BLAST70
Domaini630 – 820Reverse transcriptasePROSITE-ProRule annotationAdd BLAST191
Domaini1020 – 1143RNase HPROSITE-ProRule annotationAdd BLAST124
Domaini1200 – 1350Integrase catalyticPROSITE-ProRule annotationAdd BLAST151

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni439 – 481DisorderedSequence analysisAdd BLAST43
Regioni813 – 821RT 'primer grip'By similarity9

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi16 – 22Nuclear export signalBy similarity7
Motifi26 – 32Nuclear localization signalBy similarity7
Motifi984 – 1000Tryptophan repeat motifBy similarityAdd BLAST17

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The p66 RT is structured in five subdomains: finger, palm, thumb, connection and RNase H. Within the palm subdomain, the 'primer grip' region is thought to be involved in the positioning of the primer terminus for accommodating the incoming nucleotide. The RNase H domain stabilizes the association of RT with primer-template (By similarity).By similarity
The tryptophan repeat motif is involved in RT p66/p51 dimerization.By similarity

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri385 – 402CCHC-type 1PROSITE-ProRule annotationAdd BLAST18
Zinc fingeri406 – 423CCHC-type 2PROSITE-ProRule annotationAdd BLAST18
Zinc fingeri1149 – 1190Integrase-typePROSITE-ProRule annotationAdd BLAST42

Keywords - Domaini

Repeat, Zinc-finger

Family and domain databases

Conserved Domains Database

More...CDDi		cd05482, HIV_retropepsin_like, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.10.200, 1 hit
1.10.1200.30, 1 hit
1.10.150.90, 1 hit
1.10.375.10, 1 hit
2.30.30.10, 1 hit
2.40.70.10, 1 hit
3.30.420.10, 2 hits
3.30.70.270, 3 hits

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR001969, Aspartic_peptidase_AS
IPR043502, DNA/RNA_pol_sf
IPR000721, Gag_p24
IPR017856, Integrase-like_N
IPR036862, Integrase_C_dom_sf_retrovir
IPR001037, Integrase_C_retrovir
IPR001584, Integrase_cat-core
IPR003308, Integrase_Zn-bd_dom_N
IPR000071, Lentvrl_matrix_N
IPR012344, Matrix_HIV/RSV_N
IPR001995, Peptidase_A2_cat
IPR021109, Peptidase_aspartic_dom_sf
IPR034170, Retropepsin-like_cat_dom
IPR018061, Retropepsins
IPR008916, Retrov_capsid_C
IPR008919, Retrov_capsid_N
IPR010999, Retrovr_matrix
IPR043128, Rev_trsase/Diguanyl_cyclase
IPR012337, RNaseH-like_sf
IPR002156, RNaseH_domain
IPR036397, RNaseH_sf
IPR000477, RT_dom
IPR010659, RVT_connect
IPR010661, RVT_thumb
IPR001878, Znf_CCHC
IPR036875, Znf_CCHC_sf

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00540, Gag_p17, 1 hit
PF00607, Gag_p24, 1 hit
PF00552, IN_DBD_C, 1 hit
PF02022, Integrase_Zn, 1 hit
PF00075, RNase_H, 1 hit
PF00665, rve, 1 hit
PF00077, RVP, 1 hit
PF00078, RVT_1, 1 hit
PF06815, RVT_connect, 1 hit
PF06817, RVT_thumb, 1 hit
PF00098, zf-CCHC, 2 hits

Protein Motif fingerprint database; a protein domain database

More...PRINTSi		PR00234, HIV1MATRIX

Simple Modular Architecture Research Tool; a protein domain database

More...SMARTi		View protein in SMART
SM00343, ZnF_C2HC, 2 hits

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF46919, SSF46919, 1 hit
SSF47836, SSF47836, 1 hit
SSF47943, SSF47943, 1 hit
SSF50122, SSF50122, 1 hit
SSF50630, SSF50630, 1 hit
SSF53098, SSF53098, 2 hits
SSF56672, SSF56672, 1 hit
SSF57756, SSF57756, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS50175, ASP_PROT_RETROV, 1 hit
PS00141, ASP_PROTEASE, 1 hit
PS50994, INTEGRASE, 1 hit
PS51027, INTEGRASE_DBD, 1 hit
PS50879, RNASE_H, 1 hit
PS50878, RT_POL, 1 hit
PS50158, ZF_CCHC, 2 hits
PS50876, ZF_INTEGRASE, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequences (2)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

This entry describes 2 <p>This subsection of the 'Sequence' section lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform.<p><a href='/help/alternative_products' target='_top'>More...</a></p> isoformsi produced by ribosomal frameshifting. AlignAdd to basket
Note: 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.
Isoform Gag-Pol polyprotein (identifier: Q1A267-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the <div> <p><b>What is the canonical sequence?</b><p><a href='/help/canonical_and_isoforms' target='_top'>More...</a></p>canonicali sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide
        10         20         30         40         50
MGARASVLTG GKLDRWEKIY LRPGGKKKYM MKHLVWASRE LERFACNPSL 
        60         70         80         90        100
METTEGCKQL LQQLEPALKT GSEGLRSLFN TIVVLWCVHQ GIPVKDTKEA 
       110        120        130        140        150
LDQLQEAQQK GKQEVAAATA DGTSTVSRNF PIVANAQGQM VHQPISPRTL 
       160        170        180        190        200
NAWVKVVEEK AFSPEVIPMF MALSEGATPQ DLNTMLNTVG GHQAAMQMLK 
       210        220        230        240        250
EVINEEAAEW DRLHPVHAGP VPPGQMREPR GSDIAGTTST IQEQVGWMTS 
       260        270        280        290        300
NPPIPVGDIY KRWIILGLNK IVKMYCPVSI LDIKQGPKES FRDYVDRFYK 
       310        320        330        340        350
TLRAEQATQE VKNWMTDTLL VQNANPDCKS ILRALGPGAT LEGDEPAFQG 
       360        370        380        390        400
VGGPSHKARV LAEAMSQAQH SNDAKRQFKG PKRIVKCFNC GKEGHIARNC 
       410        420        430        440        450
KAPRRKGCWK CGQEGHQMRN CTNERQANFF RETLAFQQGK AREFPSEETR 
       460        470        480        490        500
TNSSTNRELR VQGGGTCPEG GSEERGDREQ AVSSANFPQI SLWQRPVVTV 
       510        520        530        540        550
RIEGQLKEAL LDTGADDTVL EEIELGGRWK PKMIGGIGGF IKVRQYDNVT 
       560        570        580        590        600
IDICGKRAVG TVLVGPTPVN IIGRNILTQI GCTLNFPISP IETVPVSLKP 
       610        620        630        640        650
GMDGPRVKQW PLTEEKIRAL TEICTEMEKE GKISRVGPEN PYNTPIFAIK 
       660        670        680        690        700
KKDSTKWRKL VDFRELNKRT QDFWEVQLGI PHPAGLKQKK SVTVLDVGDA 
       710        720        730        740        750
YFSCPLDENF RKYTAFTIPS VNNETPGIRY QYNVLPQGWK GSPAIFQSSM 
       760        770        780        790        800
TKILEPFRKQ NPEIIIYQYM DDLYVGSDLK IELHREKVEE LRAHLLKWGF 
       810        820        830        840        850
TTPDKKHQKE PPFLWMGYEL HPDKWTVQPI QLPEKESWTV NDIQKLIGKL 
       860        870        880        890        900
NWACQIYPGI RVKQLCKLIR GTKALTEVVT FTTEAELELA ENREILKEPV 
       910        920        930        940        950
HGAYYDPSKE LIAEIQKQGQ GQWTYQIFQE QYKNLKTGKY ARMRSAHTND 
       960        970        980        990       1000
VKQLTEVVQK VALESIVIWG KVPRFRLPIQ KETWEAWWTD YWQATWIPEW 
      1010       1020       1030       1040       1050
EYVNTPPLVK LWYQLEQDPI PGAETFYVDG AANRETKLGK AGYVTDKGRQ 
      1060       1070       1080       1090       1100
KIISLTETTN QKAELQAIQL ALQDSEVEVN IVTDSQYALG IIQGQPDTSE 
      1110       1120       1130       1140       1150
SEIVNQIIEE LIKKEKVYLS WVPAHKGIGG NEQIDKLVSS GIRKVLFLDG 
      1160       1170       1180       1190       1200
IDKAQEEHEK YHNNWRAMAS DFNLPPIVAK EIVANCDKCQ LKGEAIHGQV 
      1210       1220       1230       1240       1250
DCSPGIWQLD CTHLEGKIIL VAVHVASGYM EAEVIPAETG QETAYFILKL 
      1260       1270       1280       1290       1300
AGRWPVKVIH TDNGSNFTSS TVKAACWWAG IQQEFGIPYN PQSQGVVESM 
      1310       1320       1330       1340       1350
NKELKKIIGQ IRDQAEHLKT AVQMAVFIHN FKRKGGIGGY SAGERIIDIL 
      1360       1370       1380       1390       1400
ATDIQTTKLQ QQISNIQKFR VYYRDSRDPI WKGPAKLLWK GEGAVVLQDQ 
      1410       1420       1430 
EEIKVVPRRK AKIIRDYGKQ MAGDDCVASR QDENQNME
Note: Produced by -1 ribosomal frameshifting.
Length:1,438
Mass (Da):162,293
Last modified:October 2, 2007 - v4
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iA194A90F071625E2
GO
Isoform Gag polyprotein (identifier: Q1A268-1) [UniParc]FASTAAdd to basket
The sequence of this isoform can be found in the external entry Q1A268.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Length:499
Mass (Da):55,564
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
DQ373063 Genomic RNA Translation: ABD19475.1 Sequence problems.

Keywords - Coding sequence diversityi

Ribosomal frameshifting

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
DQ373063 Genomic RNA Translation: ABD19475.1 Sequence problems.

3D structure databases

SMRiQ1A267
ModBaseiSearch...

Miscellaneous databases

Protein Ontology

More...PROi		PR:Q1A267

Family and domain databases

CDDicd05482, HIV_retropepsin_like, 1 hit
Gene3Di1.10.10.200, 1 hit
1.10.1200.30, 1 hit
1.10.150.90, 1 hit
1.10.375.10, 1 hit
2.30.30.10, 1 hit
2.40.70.10, 1 hit
3.30.420.10, 2 hits
3.30.70.270, 3 hits
InterProiView protein in InterPro
IPR001969, Aspartic_peptidase_AS
IPR043502, DNA/RNA_pol_sf
IPR000721, Gag_p24
IPR017856, Integrase-like_N
IPR036862, Integrase_C_dom_sf_retrovir
IPR001037, Integrase_C_retrovir
IPR001584, Integrase_cat-core
IPR003308, Integrase_Zn-bd_dom_N
IPR000071, Lentvrl_matrix_N
IPR012344, Matrix_HIV/RSV_N
IPR001995, Peptidase_A2_cat
IPR021109, Peptidase_aspartic_dom_sf
IPR034170, Retropepsin-like_cat_dom
IPR018061, Retropepsins
IPR008916, Retrov_capsid_C
IPR008919, Retrov_capsid_N
IPR010999, Retrovr_matrix
IPR043128, Rev_trsase/Diguanyl_cyclase
IPR012337, RNaseH-like_sf
IPR002156, RNaseH_domain
IPR036397, RNaseH_sf
IPR000477, RT_dom
IPR010659, RVT_connect
IPR010661, RVT_thumb
IPR001878, Znf_CCHC
IPR036875, Znf_CCHC_sf
PfamiView protein in Pfam
PF00540, Gag_p17, 1 hit
PF00607, Gag_p24, 1 hit
PF00552, IN_DBD_C, 1 hit
PF02022, Integrase_Zn, 1 hit
PF00075, RNase_H, 1 hit
PF00665, rve, 1 hit
PF00077, RVP, 1 hit
PF00078, RVT_1, 1 hit
PF06815, RVT_connect, 1 hit
PF06817, RVT_thumb, 1 hit
PF00098, zf-CCHC, 2 hits
PRINTSiPR00234, HIV1MATRIX
SMARTiView protein in SMART
SM00343, ZnF_C2HC, 2 hits
SUPFAMiSSF46919, SSF46919, 1 hit
SSF47836, SSF47836, 1 hit
SSF47943, SSF47943, 1 hit
SSF50122, SSF50122, 1 hit
SSF50630, SSF50630, 1 hit
SSF53098, SSF53098, 2 hits
SSF56672, SSF56672, 1 hit
SSF57756, SSF57756, 1 hit
PROSITEiView protein in PROSITE
PS50175, ASP_PROT_RETROV, 1 hit
PS00141, ASP_PROTEASE, 1 hit
PS50994, INTEGRASE, 1 hit
PS51027, INTEGRASE_DBD, 1 hit
PS50879, RNASE_H, 1 hit
PS50878, RT_POL, 1 hit
PS50158, ZF_CCHC, 2 hits
PS50876, ZF_INTEGRASE, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiPOL_SIVMB
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: Q1A267
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: September 5, 2006
Last sequence update: October 2, 2007
Last modified: June 2, 2021
This is version 107 of the entry and version 4 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome
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