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UniProtKB - P13175 (PA_I30A0)

Entry version 95 (23 Feb 2022)
Sequence version 1 (01 Jan 1990)
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Protein

Polymerase acidic protein

Gene

PA

Organism
Influenza A virus (strain A/Swine/Iowa/15/1930 H1N1)
Status
Reviewed-Annotation score:

Annotation score:3 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>-Experimental evidence at protein leveli <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

Plays an essential role in viral RNA transcription and replication by forming the heterotrimeric polymerase complex together with PB1 and PB2 subunits. The complex transcribes viral mRNAs by using a unique mechanism called cap-snatching. It consists in the hijacking and cleavage of host capped pre-mRNAs. These short capped RNAs are then used as primers for viral mRNAs. The PB2 subunit is responsible for the binding of the 5' cap of cellular pre-mRNAs which are subsequently cleaved after 10-13 nucleotides by the PA subunit that carries the endonuclease activity.

UniRule annotation

<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

Mn2+UniRule annotationNote: Binds 2 manganese ions per subunit.UniRule 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 bindingi41Manganese 1; via tele nitrogenUniRule annotation1
Metal bindingi80Manganese 2UniRule annotation1
Metal bindingi108Manganese 1UniRule annotation1
Metal bindingi108Manganese 2UniRule annotation1
Metal bindingi119Manganese 1UniRule annotation1
Metal bindingi120Manganese 1; via carbonyl oxygenUniRule annotation1

<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 functionEndonuclease, Hydrolase, Nuclease
Biological processCap snatching, Eukaryotic host gene expression shutoff by virus, Eukaryotic host transcription shutoff by virus, Host gene expression shutoff by virus, Host-virus interaction, Inhibition of host RNA polymerase II by virus
LigandManganese, Metal-binding

Protein family/group databases

MEROPS protease database

More...MEROPSi		S62.001

<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:
Polymerase acidic proteinUniRule annotation (EC:3.1.-.-UniRule annotation)
Alternative name(s):
RNA-directed RNA polymerase subunit P2UniRule annotation
<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:PAUniRule annotation
<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>OrganismiInfluenza A virus (strain A/Swine/Iowa/15/1930 H1N1)
<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 identifieri380342 [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 › Orthornavirae › Negarnaviricota › Polyploviricotina › Insthoviricetes › Articulavirales › Orthomyxoviridae › Alphainfluenzavirus ›
<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 hostiAves [TaxID: 8782]
Homo sapiens (Human) [TaxID: 9606]
Sus scrofa (Pig) [TaxID: 9823]

<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

  • Host cytoplasm UniRule annotation
  • Host nucleus UniRule annotation
    • Note: PB1 and PA are transported in the host nucleus as a complex.UniRule annotationBy similarity

Keywords - Cellular componenti

Host cytoplasm, Host nucleus

<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_00000788041 – 716Polymerase acidic proteinAdd BLAST716

<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

Phosphorylated on serines and threonines by host kinases, including human casein kinase II.UniRule annotationBy similarity

Keywords - PTMi

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

Influenza RNA polymerase is composed of three subunits: PB1, PB2 and PA.

Interacts (via C-terminus) with PB1 (via N-terminus).

UniRule annotationBy 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		P13175

Database of comparative protein structure models

More...ModBasei		Search...

Protein Data Bank in Europe - Knowledge Base

More...PDBe-KBi		Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...EvolutionaryTracei		P13175

<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

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>Motifi124 – 139Nuclear localization signal 1 (NLS1)UniRule annotationBy similarityAdd BLAST16
Motifi184 – 247Nuclear localization signal 2 (NLS2)UniRule annotationBy similarityAdd BLAST64

<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 influenza viruses PA family.UniRule annotation

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		3.40.91.90, 1 hit

HAMAP database of protein families

More...HAMAPi		MF_04063, INFV_PA, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR037534, INFV_PA
IPR001009, PA/PA-X
IPR038372, PA/PA-X_sf

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00603, Flu_PA, 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.

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
Isoform PA (identifier: P13175-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the <p><strong>What is the canonical sequence?</strong><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
MEDFVRQCFN PMIVELAEKA MKEYGEDPRI ETNKFAAICT HMEVSFMYSD 
        60         70         80         90        100
FHFINERGES IIVESGDPNA LLKHRFEIIE GRDRAMAWTV VNSICNTTGV 
       110        120        130        140        150
GKPKFLPDLY DYKEDRFIEI GVTRREVHIY YLEKANKIKS EETHIHIFSF 
       160        170        180        190        200
TGEEMATKAD YTLDEESRAR IKTRLFTIRQ EMASRGLWDS FRQSERGEET 
       210        220        230        240        250
IEERFEITGT MRRLADQSLP PNFSSLENFR AYVDGFEPNG YIEGKLSQMS 
       260        270        280        290        300
KEVNARIEPF LKTTPRPLRL PGGPPCFQRS KFLLMDALKL SIEDPSHEGE 
       310        320        330        340        350
GIPLYDAIKC MKTFFGWKEP IIVKPHEKGI NSNYLLAWKQ VLAEIQDIES 
       360        370        380        390        400
EKKVPRTKNI KKTSQLKWAL GENMAPEKVD FDDCKDVSDL KQYDSDEPEF 
       410        420        430        440        450
RSLASWIQSE FNKACELTDS SWIELDEIGE DVAPIEHIAS MRRNYFTAEV 
       460        470        480        490        500
SHCRATEYIM KGVYINTALL NASCAAMDDF QLIPMISKCR TKEGRRKTNL 
       510        520        530        540        550
YGFIIKGRSH LRNDTDVVNF VSMEFSLTDP RLEPHKWEKY CVLEIGDMLL 
       560        570        580        590        600
RTSIGQVSRP MFLYVRTNGT SKIKMKWGME MRRCLLQSLQ QIESMIEAES 
       610        620        630        640        650
SVKEKDMTKE FFENKSETWP IGESPKGVEE GSIGKVCRTL LAKSVFNSLY 
       660        670        680        690        700
ASPQLEGFSA ESRKLLLIVQ ALRDNLEPGT FDLGGLYESI EECLINDPWV 
       710 
LLNASWFNSF LTHALR
Length:716
Mass (Da):82,566
Last modified:January 1, 1990 - 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:iDD7F68F2E2BB5075
GO
Isoform PA-X (identifier: P0DJV0-1) [UniParc]FASTAAdd to basket
The sequence of this isoform can be found in the external entry P0DJV0.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Length:252
Mass (Da):29,201
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
M26076 Genomic RNA Translation: AAA43675.1

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
M26076 Genomic RNA Translation: AAA43675.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1YN6X-ray2.20C224-233[»]
1YN7X-ray2.20C224-233[»]
3PQYX-ray3.19C/H/M/R224-233[»]
SMRiP13175
ModBaseiSearch...
PDBe-KBiSearch...

Protein family/group databases

MEROPSiS62.001

Miscellaneous databases

EvolutionaryTraceiP13175

Family and domain databases

Gene3Di3.40.91.90, 1 hit
HAMAPiMF_04063, INFV_PA, 1 hit
InterProiView protein in InterPro
IPR037534, INFV_PA
IPR001009, PA/PA-X
IPR038372, PA/PA-X_sf
PfamiView protein in Pfam
PF00603, Flu_PA, 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 nameiPA_I30A0
<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: P13175
<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: January 1, 1990
Last sequence update: January 1, 1990
Last modified: February 23, 2022
This is version 95 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

3D-structure

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
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