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Protein

Gag-Pol polyprotein

Gene

gag-pol

Organism
Human immunodeficiency virus type 1 group O (isolate MVP5180) (HIV-1)
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: Mediates, with Gag polyprotein, the essential events in virion assembly, including binding the plasma membrane, making the protein-protein interactions necessary to create spherical particles, recruiting the viral Env proteins, and packaging the genomic RNA via direct interactions with the RNA packaging sequence (Psi). Gag-Pol polyprotein may regulate its own translation, by the binding genomic RNA in the 5'-UTR. At low concentration, the polyprotein would promote translation, whereas at high concentration, the polyprotein would encapsidate genomic RNA and then shut off translation.By similarity
Matrix protein p17: Targets the polyprotein to the plasma membrane via a multipartite membrane-binding signal, that includes its myristoylated N-terminus. Matrix protein is part of the pre-integration complex. Implicated in the release from host cell mediated by Vpu. Binds to RNA.By similarity
Capsid protein p24: Forms the conical core that encapsulates the genomic RNA-nucleocapsid complex in the virion. Most core are conical, with only 7% tubular. The core is constituted by capsid protein hexamer subunits. The core is disassembled soon after virion entry (By similarity). Host restriction factors such as TRIM5-alpha or TRIMCyp bind retroviral capsids and cause premature capsid disassembly, leading to blocks in reverse transcription. Capsid restriction by TRIM5 is one of the factors which restricts HIV-1 to the human species. Host PIN1 apparently facilitates the virion uncoating. On the other hand, interactions with PDZD8 or CYPA stabilize the capsid.By similarity
Nucleocapsid protein p7: Encapsulates and protects viral dimeric unspliced genomic RNA (gRNA). Binds these RNAs through its zinc fingers. Acts as a nucleic acid chaperone which is involved in rearangement of nucleic acid secondary structure during gRNA retrotranscription. Also facilitates template switch leading to recombination. As part of the polyprotein, participates in gRNA dimerization, packaging, tRNA incorporation and virion assembly.By similarity
Protease: Aspartyl protease that 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 annotationBy similarity
Reverse transcriptase/ribonuclease H: Multifunctional enzyme that converts the viral 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 tRNA3-Lys 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 probably can 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
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 HIV genome, a 5 bp duplication of host DNA is produced at the ends of HIV-1 integration. Alternatively, Integrase may catalyze the excision of viral DNA just after strand transfer, this is termed disintegration.By similarity

Miscellaneous

Reverse transcriptase/ribonuclease H: 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.By similarity
HIV-1 lineages are divided in three main groups, M (for Major), O (for Outlier), and N (for New, or Non-M, Non-O). The vast majority of strains found worldwide belong to the group M. Group O seems to be endemic to and largely confined to Cameroon and neighboring countries in West Central Africa, where these viruses represent a small minority of HIV-1 strains. The group N is represented by a limited number of isolates from Cameroonian persons. The group M is further subdivided in 9 clades or subtypes (A to D, F to H, J and K).
Resistance to inhibitors associated with mutations are observed both in viral protease and in reverse transcriptase. Most of the time, single mutations confer only a modest reduction in drug susceptibility. Combination of several mutations is usually required to develop a high-level drug resistance. These mutations are predominantly found in clade B viruses and not in other genotypes. They are listed in the clade B representative isolate HXB2 (AC P04585).

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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.By similarity EC:3.1.26.13
  • 3'-end directed exonucleolytic cleavage of viral RNA-DNA hybrid.By similarity 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:
  • Mg2+By similarityNote: Binds 2 magnesium ions for reverse transcriptase polymerase activity.By similarity
  • Mg2+By similarityNote: Binds 2 magnesium ions for ribonuclease H (RNase H) activity. Substrate-binding is a precondition for magnesium binding.By similarity
  • Mg2+By similarityNote: Magnesium ions are required for integrase activity. Binds at least 1, maybe 2 magnesium ions.By similarity

<p>This subsection of the ‘Function’ 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

Protease: The viral protease is inhibited by many synthetic protease inhibitors (PIs), such as amprenavir, atazanavir, indinavir, loprinavir, nelfinavir, ritonavir and saquinavir. Use of protease inhibitors in tritherapy regimens permit more ambitious therapeutic strategies. Reverse transcriptase/ribonuclease H: 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.By similarity

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 ‘Function’ 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 sitei514For protease activity; shared with dimeric partnerPROSITE-ProRule annotation1
<p>This subsection of the ‘Function’ 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 bindingi698Magnesium; catalytic; for reverse transcriptase activityBy similarity1
Metal bindingi773Magnesium; catalytic; for reverse transcriptase activityBy similarity1
Metal bindingi774Magnesium; catalytic; for reverse transcriptase activityBy similarity1
Sitei988Essential for RT p66/p51 heterodimerizationBy similarity1
Sitei1001 – 1002Essential for RT p66/p51 heterodimerizationBy similarity2
Metal bindingi1031Magnesium; catalytic; for RNase H activityBy similarity1
Metal bindingi1066Magnesium; catalytic; for RNase H activityBy similarity1
Metal bindingi1086Magnesium; catalytic; for RNase H activityBy similarity1
Metal bindingi1137Magnesium; catalytic; for RNase H activityBy similarity1
Metal bindingi1212Magnesium; catalytic; for integrase activityBy similarity1
Metal bindingi1264Magnesium; catalytic; for integrase activityBy similarity1
Metal bindingi1300Magnesium; catalytic; for integrase activityBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ 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 fingeri394 – 411CCHC-type 1PROSITE-ProRule annotationAdd BLAST18
Zinc fingeri415 – 432CCHC-type 2PROSITE-ProRule annotationAdd BLAST18
Zinc fingeri1151 – 1192Integrase-typePROSITE-ProRule annotationAdd BLAST42
<p>This subsection of the ‘Function’ 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 bindingi1371 – 1418Integrase-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

GO - Biological processi

<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 processActivation of host caspases by virus, DNA 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, Modulation of host cell apoptosis by virus, Viral genome integration, Viral penetration into host nucleus, Viral release from host cell, Virion maturation, Virus entry into host cell
LigandLipid-binding, Magnesium, 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_and_taxonomy_section">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 11 chains:
Matrix protein p17
Short name:
MA
Capsid protein p24
Short name:
CA
Spacer peptide 1By similarity
Short name:
SP1
Alternative name(s):
p2
Transframe peptide
Short name:
TF
p6-pol
Short name:
p6*
Alternative name(s):
PR
Retropepsin
Alternative name(s):
Exoribonuclease H (EC:3.1.13.2)
p66 RT
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_and_taxonomy_section">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_and_taxonomy_section">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>OrganismiHuman immunodeficiency virus type 1 group O (isolate MVP5180) (HIV-1)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 identifieri388816 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 lineageiVirusesOrterviralesRetroviridaeOrthoretrovirinaeLentivirus
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 hostiHomo sapiens (Human) [TaxID: 9606]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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
  • UP000007698 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">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

Gag-Pol polyprotein :
Integrase :

GO - Cellular componenti

Keywords - Cellular componenti

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

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Keywords - Diseasei

AIDS

<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_processing_section">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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00002612742 – 1446Gag-Pol polyproteinAdd BLAST1445
ChainiPRO_00002465262 – 130Matrix protein p17By similarityAdd BLAST129
ChainiPRO_0000246527131 – 362Capsid protein p24By similarityAdd BLAST232
<p>This subsection of the ‘PTM / Processing’ section describes the position and length of an active peptide in the mature protein.<p><a href='/help/peptide' target='_top'>More...</a></p>PeptideiPRO_0000246528363 – 381Spacer peptide 1By similarityAdd BLAST19
ChainiPRO_0000246529382 – 437Nucleocapsid protein p7By similarityAdd BLAST56
PeptideiPRO_0000246723438 – 445Transframe peptideSequence analysis8
ChainiPRO_0000246530446 – 489p6-polSequence analysisAdd BLAST44
ChainiPRO_0000246531490 – 588ProteaseBy similarityAdd BLAST99
ChainiPRO_0000246532589 – 1148Reverse transcriptase/ribonuclease HBy similarityAdd BLAST560
ChainiPRO_0000246533589 – 1028p51 RTBy similarityAdd BLAST440
ChainiPRO_00002465341029 – 1148p15By similarityAdd BLAST120
ChainiPRO_00002465351149 – 1446IntegraseBy similarityAdd BLAST298

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">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 ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei130Phosphotyrosine; by hostBy similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">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

Gag-Pol polyprotein: 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. Nucleocapsid protein p7 might be further cleaved after virus entry.PROSITE-ProRule annotationBy similarity
Matrix protein p17: Tyrosine phosphorylated presumably in the virion by a host kinase. Phosphorylation is apparently not a major regulator of membrane association.By similarity
Capsid protein p24: Phosphorylated possibly by host MAPK1; this phosphorylation is necessary for Pin1-mediated virion uncoating.By similarity
Nucleocapsid protein p7: Methylated by host PRMT6, impairing its function by reducing RNA annealing and the initiation of reverse transcription.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sitei130 – 131Cleavage; by viral proteaseBy similarity2
Sitei362 – 363Cleavage; by viral proteaseBy similarity2
Sitei381 – 382Cleavage; by viral proteaseBy similarity2
Sitei437 – 438Cleavage; by viral proteaseSequence analysis2
Sitei?444 – ?445Cleavage; by viral proteaseSequence analysis2
Sitei?488 – ?489Cleavage; by viral proteaseSequence analysis2
Sitei587 – 588Cleavage; by viral proteaseBy similarity2
Sitei1028 – 1029Cleavage; by viral protease; partialBy similarity2
Sitei1148 – 1149Cleavage; by viral proteaseBy similarity2

Keywords - PTMi

Lipoprotein, Myristate, Phosphoprotein

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q79666

<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_section">'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_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Matrix protein p17: Homotrimer; further assembles as hexamers of trimers (By similarity). Matrix protein p17: Interacts with gp41 (via C-terminus) (By similarity). Matrix protein p17: interacts with host CALM1; this interaction induces a conformational change in the Matrix protein, triggering exposure of the myristate group (By similarity). Matrix protein p17: interacts with host AP3D1; this interaction allows the polyprotein trafficking to multivesicular bodies during virus assembly (By similarity). Matrix protein p17: Part of the pre-integration complex (PIC) which is composed of viral genome, matrix protein, Vpr and integrase (By similarity). Capsid protein p24: Homodimer; the homodimer further multimerizes as homohexamers or homopentamers. Capsid protein p24: Interacts with human PPIA/CYPA (By similarity); This interaction stabilizes the capsid. Capsid protein p24: Interacts with human NUP153 (By similarity). Capsid protein p24: Interacts with host PDZD8; this interaction stabilizes the capsid (By similarity). Capsid protein p24: Interacts with monkey TRIM5; this interaction destabilizes the capsid (By similarity).Protease: Homodimer, whose active site consists of two apposed aspartic acid residues. Reverse transcriptase/ribonuclease H: 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. Integrase: Homodimer; possibly can form homotetramer. Integrase: Part of the pre-integration complex (PIC) which is composed of viral genome, matrix protein, Vpr and integrase. Integrase: Interacts with human SMARCB1/INI1 and human PSIP1/LEDGF isoform 1. Integrase: Interacts with human KPNA3; this interaction might play a role in nuclear import of the pre-integration complex (By similarity). Integrase: Interacts with human NUP153; this interaction might play a role in nuclear import of the pre-integration complex (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

Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

More...
ProteinModelPortali
Q79666

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

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SMRi
Q79666

Database of comparative protein structure models

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ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

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MobiDBi
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_and_domains_section">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>Domaini509 – 578Peptidase A2PROSITE-ProRule annotationAdd BLAST70
Domaini632 – 822Reverse transcriptasePROSITE-ProRule annotationAdd BLAST191
Domaini1022 – 1145RNase HPROSITE-ProRule annotationAdd BLAST124
Domaini1202 – 1352Integrase 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>Regioni7 – 31Interaction with Gp41By similarityAdd BLAST25
Regioni8 – 43Interaction with host CALM1By similarityAdd BLAST36
Regioni12 – 19Interaction with host AP3D1By similarity8
Regioni14 – 33Interaction with membrane phosphatidylinositol 4,5-bisphosphate and RNABy similarityAdd BLAST20
Regioni73 – 77Interaction with membrane phosphatidylinositol 4,5-bisphosphateBy similarity5
Regioni187 – 225Interaction with human PPIA/CYPA and NUP153By similarityAdd BLAST39
Regioni276 – 362Dimerization/Multimerization of capsid protein p24By similarityAdd BLAST87
Regioni490 – 494Dimerization of proteaseBy similarity5
Regioni538 – 544Dimerization of proteaseBy similarity7
Regioni577 – 589Dimerization of proteaseBy similarityAdd BLAST13
Regioni815 – 823RT '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
Motifi986 – 1002Tryptophan 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

Reverse transcriptase/ribonuclease H: 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
Reverse transcriptase/ribonuclease H: The tryptophan repeat motif is involved in RT p66/p51 dimerization (By similarity).By similarity
Integrase: The core domain contains the D-x(n)-D-x(35)-E motif, named for the phylogenetically conserved glutamic acid and aspartic acid residues and the invariant 35 amino acid spacing between the second and third acidic residues. Each acidic residue of the D,D(35)E motif is independently essential for the 3'-processing and strand transfer activities of purified integrase protein.By similarity

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri394 – 411CCHC-type 1PROSITE-ProRule annotationAdd BLAST18
Zinc fingeri415 – 432CCHC-type 2PROSITE-ProRule annotationAdd BLAST18
Zinc fingeri1151 – 1192Integrase-typePROSITE-ProRule annotationAdd BLAST42

Keywords - Domaini

Repeat, Zinc-finger

Phylogenomic databases

Database of Orthologous Groups

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OrthoDBi
VOG09000135

Family and domain databases

Conserved Domains Database

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CDDi
cd05482 HIV_retropepsin_like, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

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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

Integrated resource of protein families, domains and functional sites

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InterProi
View protein in InterPro
IPR001969 Aspartic_peptidase_AS
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
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

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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

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PRINTSi
PR00234 HIV1MATRIX

Simple Modular Architecture Research Tool; a protein domain database

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SMARTi
View protein in SMART
SM00343 ZnF_C2HC, 2 hits

Superfamily database of structural and functional annotation

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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
SSF57756 SSF57756, 1 hit

PROSITE; a protein domain and family database

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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_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>.<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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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: Q79666-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' 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 SKLDAWERIR LRPGSKKAYR LKHLVWASRE LERYACNPGL
60 70 80 90 100
LETAEGTEQL LQQLEPALKT GSEDLKSLWN AIAVLWCVHN RFDIRDTQQA
110 120 130 140 150
IQKLKEVMAS RKSAEAAKEE TSPRQTSQNY PIVTNAQGQM VHQAISPRTL
160 170 180 190 200
NAWVKAVEEK AFNPEIIPMF MALSEGAVPY DINTMLNAIG GHQGALQVLK
210 220 230 240 250
EVINEEAAEW DRTHPPAMGP LPPGQIREPT GSDIAGTTST QQEQIIWTTR
260 270 280 290 300
GANSIPVGDI YRKWIVLGLN KMVKMYSPVS ILDIRQGPKE PFRDYVDRFY
310 320 330 340 350
KTLRAEQATQ EVKNWMTETL LVQNSNPDCK QILKALGPEA TLEEMMVACQ
360 370 380 390 400
GVGGPTHKAK ILAEAMASAQ QDLKGGYTAV FMQRGQNPNR KGPIKCFNCG
410 420 430 440 450
KEGHIAKNCR APRKRGCWKC GQEGHQMKDC KNGRQANFFR EVLASGGHEA
460 470 480 490 500
RQLCAETSVP ISPTNGGGSE GTRESESEGG SGRAVPICLP QIPLWDRPIV
510 520 530 540 550
TAKVGGHLCE ALLDTGADDT VLNNIQLEGR WTPKMIGGIG GFIKVKEYNN
560 570 580 590 600
VTVEVQGKEV QGTVLVGPTP VNILGRNILT GLGCTLNFPI SPIAPVPVKL
610 620 630 640 650
KPGMDGPKVK QWPLSREKIE ALTAICQEME QEGKISRIGP ENPYNTPIFA
660 670 680 690 700
IKKKDSTKWR KLVDFRELNK RTQDFWEVQL GIPHPGGLKQ RQSVTVLDVG
710 720 730 740 750
DAYFSCPLDP DFRKYTAFTI PSVNNETPGV RYQYNVLPQG WKGSPAIFQS
760 770 780 790 800
SMTKILDPFR KSNPEVEIYQ YIDDLYVGSD LPLAEHRKRV ELLREHLYQW
810 820 830 840 850
GFTTPDKKHQ KEPPFLWMGY ELHPDKWTVQ PIQLPDKEVW TVNDIQKLVG
860 870 880 890 900
KLNWASQIYQ GIRVKELCKL IRGTKSLTEV VPLSKEAELE LEENREKLKE
910 920 930 940 950
PVHGVYYQPD KDLWVSIQKH GEGQWTYQVY QDEHKNLKTG KYARQKASHT
960 970 980 990 1000
NDIRQLAEVV QKVSQEAIVI WGKLPKFRLP VTRETWETWW AEYWQATWIP
1010 1020 1030 1040 1050
EWEFVSTPPL IKLWYQLETE PIVGAETFYV DGAANRNTKL GKAGYVTEQG
1060 1070 1080 1090 1100
KQNIIKLEET TNQKAELMAV LIALQDSKEQ VNIVTDSQYV LGIISSQPTQ
1110 1120 1130 1140 1150
SDSPIVQQII EELTKKERVY LTWVPAHKGI GGNEKIDKLV SKDIRRVLFL
1160 1170 1180 1190 1200
EGIDQAQEDH EKYHSNWRAL ASDFGLPPIV AKEIIASCPK CHIKGEATHG
1210 1220 1230 1240 1250
QVDYSPEIWQ MDCTHLEGKI IIVAVHVASD FIEAEVIPAE TGQETAYFLL
1260 1270 1280 1290 1300
KLAARWPVKV IHTDNGPNFT SAAMKAACWW TGIQHEFGIP YNPQSQGVVE
1310 1320 1330 1340 1350
AMNKELKSII QQVRDQAEHL KTAVQMAVFV HNFKRKGGIG GYTAGERLID
1360 1370 1380 1390 1400
ILASQIQTTE LQKQILKINN FRVYYRDSRD PIWKGPAQLL WKGEGAVVIQ
1410 1420 1430 1440
DKGDIKVVPR RKAKIIRDYG KQMAGTDSMA NRQTESESME QPGEIP
Note: Produced by -1 ribosomal frameshifting.
Length:1,446
Mass (Da):162,770
Last modified:January 23, 2007 - v3
<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:i2E91F93420AAFB44
GO
Isoform Gag polyprotein (identifier: Q79665-1) [UniParc]FASTAAdd to basket
The sequence of this isoform can be found in the external entry Q79665.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Note: Produced by conventional translation.
Length:498
Mass (Da):55,498
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

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DDBJi
Links Updated
L20571 Genomic RNA Translation: AAA44860.1 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

<p>This subsection of the <a href="http://www.uniprot.org/manual/cross_references_section">Cross-references</a> section provides links to various web resources that are relevant for a specific protein.<p><a href='/help/web_resource' target='_top'>More...</a></p>Web resourcesi

HIV drug resistance mutations
hivdb

HIV drug resistance database

BioAfrica: HIV bioinformatics in Africa

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
L20571 Genomic RNA Translation: AAA44860.1 Sequence problems.

3D structure databases

ProteinModelPortaliQ79666
SMRiQ79666
ModBaseiSearch...
MobiDBiSearch...

Proteomic databases

PRIDEiQ79666

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

OrthoDBiVOG09000135

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q79666

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
InterProiView protein in InterPro
IPR001969 Aspartic_peptidase_AS
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
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
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

ProtoNet; Automatic hierarchical classification of proteins

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ProtoNeti
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_HV1MV
<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: Q79666
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 25, 2006
Last sequence update: January 23, 2007
Last modified: December 5, 2018
This is version 153 of the entry and version 3 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

Complete proteome
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