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Entry version 109 (07 Oct 2020)
Sequence version 1 (23 Oct 1986)
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Protein

Intracisternal A-particle Pol-related polyprotein

Gene

pol

Organism
Hamster intracisternal a-particle H18 (IAP-H18)
Status
Reviewed-Annotation score:

Annotation score:4 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

Miscellaneous

Intracisternal A particles (IAPs) are defective retroviral elements. Due to extensive mutations in the envelope coding sequence, IAPs can only form defective viral particles confined to the intracisternae of the Golgi. IAPs are an important class of transposable elements that induce genomic mutations and cell transformation by disrupting gene expression.Curated
Reverse transcriptase/ribonuclease HThe 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 swiching 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.PROSITE-ProRule annotation
Readthrough of three terminators may occur: TAA between codons ATT for Ile-660 and AAA for Lys-661, TAG between codons TCC for Ser-832 and TAT for Tyr-833, and TAG between codons CCC for Pro-859 and ATT for Ile-860.

<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

<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

Mg2+PROSITE-ProRule annotationNote: The RT polymerase active site binds 2 magnesium ions.PROSITE-ProRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<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 bindingi106Magnesium; catalytic; for reverse transcriptase activityPROSITE-ProRule annotation1
Metal bindingi181Magnesium; catalyticPROSITE-ProRule annotation1
Metal bindingi182Magnesium; catalyticPROSITE-ProRule annotation1
Metal bindingi417MagnesiumPROSITE-ProRule annotation1
Metal bindingi446MagnesiumPROSITE-ProRule annotation1
Metal bindingi466MagnesiumPROSITE-ProRule annotation1
Metal bindingi530MagnesiumPROSITE-ProRule annotation1
Metal bindingi607Magnesium; catalyticPROSITE-ProRule annotation1
Metal bindingi663Magnesium; catalyticPROSITE-ProRule annotation1

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 fingeri542 – 583Integrase-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 bindingi760 – 809Integrase-typePROSITE-ProRule annotationAdd BLAST50

<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 functionDNA-binding, Endonuclease, Hydrolase, Multifunctional enzyme, Nuclease, Nucleotidyltransferase, RNA-directed DNA polymerase, Transferase
Biological processDNA integration, DNA recombination, Viral genome integration, 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:
Intracisternal A-particle Pol-related polyprotein
Cleaved into the following 2 chains:
Reverse transcriptase/ribonuclease H (EC:2.7.7.49PROSITE-ProRule annotation, EC:2.7.7.7PROSITE-ProRule annotation, EC:3.1.26.4PROSITE-ProRule annotation)
Short name:
RT
Integrase
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: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>OrganismiHamster intracisternal a-particle H18 (IAP-H18)
<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 identifieri11752 [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 lineageiVirusesRiboviriaPararnaviraeArtverviricotaRevtraviricetesOrterviralesRetroviridaeIntracisternal A-particles
<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 hostiCricetinae (hamsters) [TaxID: 10026]

<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 '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_0000125486‹1 – 863Intracisternal A-particle Pol-related polyproteinAdd BLAST›863
ChainiPRO_0000443269‹1 – 546Reverse transcriptase/ribonuclease HAdd BLAST›546
ChainiPRO_0000443270547 – 863IntegraseAdd BLAST317

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>Sitei546 – 547Cleavage; by viral proteaseBy similarity2

<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
P04026

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>Domaini41 – 229Reverse transcriptasePROSITE-ProRule annotationAdd BLAST189
Domaini408 – 538RNase HPROSITE-ProRule annotationAdd BLAST131
Domaini596 – 766Integrase catalyticPROSITE-ProRule annotationAdd BLAST171

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the retroviral Pol polyprotein family.Curated

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri542 – 583Integrase-typePROSITE-ProRule annotationAdd BLAST42

Keywords - Domaini

Zinc-finger

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.10.200, 1 hit
2.30.30.10, 1 hit
3.30.420.10, 2 hits
3.30.70.270, 2 hits

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR043502, DNA/RNA_pol_sf
IPR017856, Integrase-like_N
IPR036862, Integrase_C_dom_sf_retrovir
IPR001037, Integrase_C_retrovir
IPR001584, Integrase_cat-core
IPR003308, Integrase_Zn-bd_dom_N
IPR043128, Rev_trsase/Diguanyl_cyclase
IPR012337, RNaseH-like_sf
IPR002156, RNaseH_domain
IPR036397, RNaseH_sf
IPR000477, RT_dom
IPR010661, RVT_thumb

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00552, IN_DBD_C, 1 hit
PF02022, Integrase_Zn, 1 hit
PF00075, RNase_H, 1 hit
PF00665, rve, 1 hit
PF00078, RVT_1, 1 hit
PF06817, RVT_thumb, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF46919, SSF46919, 1 hit
SSF50122, SSF50122, 1 hit
SSF53098, SSF53098, 1 hit
SSF56672, SSF56672, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50994, INTEGRASE, 1 hit
PS51027, INTEGRASE_DBD, 1 hit
PS50879, RNASE_H, 1 hit
PS50878, RT_POL, 1 hit
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>Sequencei

<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: Fragment.

<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.

P04026-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
LGAVEASRPI PWKTEEPLWV SQWPLSSEKL EAVTRLVQEQ ERLGHLEPST
60 70 80 90 100
SPWNTPIFVI KKKSGKWRLL HDLRAINNQM HLFGPVQRGL PLLSALPQDW
110 120 130 140 150
KLIIIDIKDC FFSIPLYPRD RPRFAFTIPS LNHMEPDKRF QWKVLPQGMA
160 170 180 190 200
NSPTICQLYV QEALEPIRKQ FTSLIVIHYM DDILICHKEL DVLQKAFPML
210 220 230 240 250
VAELKQWGLE IASEKVQIAD TGLFLGSKIT PKNIVPQKIE IRKDHLQTLN
260 270 280 290 300
DFQKLLGDIN WLRPFLKIPS ADLKPLFDLL EGEPHISSPR KFTPAAHRAL
310 320 330 340 350
QMVEEALQEA QITTNSPAKI IDWYPDAVAQ PRSRIKAAVT HFGRDPDSLI
360 370 380 390 400
VPYTAAQVQT LAATSSDWAV LVTSFSGQID NHFPKHPILQ FALNQAIVFP
410 420 430 440 450
QVTAKDPLPD GTVVYTDGSK TGLGAYVVKD RVISKQYNET SPQVVECLIV
460 470 480 490 500
LEVLEAFPGP LNIVSDSSYV VNAVNLLEIA GIIRSSSRVA NIFQKIQAAL
510 520 530 540 550
LNRRFPVFIT HVRAHSGLPG PMSLGNDLAD KATKLVATAL STHAQAAKEF
560 570 580 590 600
HKRFHVTAET LRRRFALSRK EAREIVTQCQ NCCEFLPTPH MGINPRGIRP
610 620 630 640 650
LQMWQMDVTH IPSFGRLQYV HVSVDTCSGV MFATPLTGEK ASYVIQHCLE
660 670 680 690 700
AWSAWGKPRI KTDNGPAYTS QKFRQFCRQM DVTHLTGLPY NPQGQGIVER
710 720 730 740 750
AHRTLKSYLI KQKGSIEDVL PSVPRVAVSM ALFTLNFLNC DAQGHTAADR
760 770 780 790 800
HSLEPDRPKE MVKWKDVLTD LWKGPDPILI RSRGAVCVFP QEEENPLWIP
810 820 830 840 850
ERLTRRAPSQ LQNKKDGGQV GDEDSPTRDD GSYDGRVTVG HHVYLPPTDA
860
SDAECPGVPI FHK
Length:863
Mass (Da):97,037
Last modified:October 23, 1986 - v1
<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:i704AEF7FC6B1D886
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section is used for sequence fragments to indicate that the residue at the extremity of the sequence is not the actual terminal residue in the complete protein sequence.<p><a href='/help/non_ter' target='_top'>More...</a></p>Non-terminal residuei11

Sequence databases

Protein sequence database of the Protein Information Resource

More...
PIRi
A03964, GNHYIH

<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

PIRiA03964, GNHYIH

3D structure databases

SMRiP04026
ModBaseiSearch...

Family and domain databases

Gene3Di1.10.10.200, 1 hit
2.30.30.10, 1 hit
3.30.420.10, 2 hits
3.30.70.270, 2 hits
InterProiView protein in InterPro
IPR043502, DNA/RNA_pol_sf
IPR017856, Integrase-like_N
IPR036862, Integrase_C_dom_sf_retrovir
IPR001037, Integrase_C_retrovir
IPR001584, Integrase_cat-core
IPR003308, Integrase_Zn-bd_dom_N
IPR043128, Rev_trsase/Diguanyl_cyclase
IPR012337, RNaseH-like_sf
IPR002156, RNaseH_domain
IPR036397, RNaseH_sf
IPR000477, RT_dom
IPR010661, RVT_thumb
PfamiView protein in Pfam
PF00552, IN_DBD_C, 1 hit
PF02022, Integrase_Zn, 1 hit
PF00075, RNase_H, 1 hit
PF00665, rve, 1 hit
PF00078, RVT_1, 1 hit
PF06817, RVT_thumb, 1 hit
SUPFAMiSSF46919, SSF46919, 1 hit
SSF50122, SSF50122, 1 hit
SSF53098, SSF53098, 1 hit
SSF56672, SSF56672, 1 hit
PROSITEiView protein in PROSITE
PS50994, INTEGRASE, 1 hit
PS51027, INTEGRASE_DBD, 1 hit
PS50879, RNASE_H, 1 hit
PS50878, RT_POL, 1 hit
PS50876, ZF_INTEGRASE, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

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_IPHA
<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: P04026
<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: October 23, 1986
Last sequence update: October 23, 1986
Last modified: October 7, 2020
This is version 109 of the entry and version 1 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

Transposable element

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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