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Entry version 68 (11 Dec 2019)
Sequence version 1 (01 Oct 2000)
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Protein

Non-structural polyprotein 1A

Gene

ORF1

Organism
Human astrovirus-8 (HAstV-8)
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>
-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

contains the viral protease participating in the cleavage of the polyprotein into functional products.
protein covalently attached to the 5' extremity of the genomic and subgenomic RNAs.By similarity

<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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<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 sitei462Charge relay system; for serine protease activityBy similarity1
Active sitei490Charge relay system; for serine protease activityBy similarity1
Active sitei552Charge relay system; for serine protease activityBy similarity1

<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

<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 functionHydrolase, Protease, Thiol protease
Biological processViral RNA replication

Protein family/group databases

MEROPS protease database

More...
MEROPSi
S01.109

<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:
Non-structural polyprotein 1A
Cleaved into the following 5 chains:
Serine protease p27 (EC:3.4.21.-)
Short name:
p27
<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:ORF1
<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>OrganismiHuman astrovirus-8 (HAstV-8)
<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 identifieri43358 [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 lineageiVirusesRiboviriaAstroviridaeMamastrovirus
<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 hostiHomo sapiens (Human) [TaxID: 9606]
<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
  • UP000008629 <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

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei240 – 260HelicalSequence analysisAdd BLAST21
Transmembranei287 – 307HelicalSequence analysisAdd BLAST21
Transmembranei314 – 334HelicalSequence analysisAdd BLAST21
Transmembranei345 – 365HelicalSequence analysisAdd BLAST21

GO - Cellular componenti

Keywords - Cellular componenti

Host membrane, Membrane

<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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003273401 – 921Non-structural polyprotein 1AAdd BLAST921
ChainiPRO_00003273411 – 176Protein p19Sequence analysisAdd BLAST176
ChainiPRO_0000327342177 – 420Transmembrane protein 1ASequence analysisAdd BLAST244
ChainiPRO_0000327343421 – 665Serine protease p27Sequence analysisAdd BLAST245
ChainiPRO_0000419598666 – 756VPgSequence analysisAdd BLAST91
ChainiPRO_0000327344757 – 921Protein p20'Sequence analysisAdd BLAST165

<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

Cleaved presumably by viral and host proteases.

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>Sitei176 – 177CleavageSequence analysis2
Sitei420 – 421CleavageSequence analysis2
Sitei665 – 666CleavageSequence analysis2
Sitei756 – 757CleavageSequence analysis2

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
Q9IFX3

<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
Q9IFX3

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

<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 astroviridae polyprotein 1A family.Curated

Keywords - Domaini

Coiled coil, Transmembrane, Transmembrane helix

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR022068 Astroviridae_polyprotein_1
IPR009003 Peptidase_S1_PA

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF12285 DUF3621, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF50494 SSF50494, 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
Isoform nsp1a (identifier: Q9IFX3-1) [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
MMALGEPYYS SKPDKDFNFG STMARRQMTP TMVTKLPKFV RNSPQAYDWI
60 70 80 90 100
VRGLIFPTTG KTYFQRVVVI TGGLEDGTYG SYAFNGSEWV EIYPIEHLNL
110 120 130 140 150
MSSLKLIHKA NALQERLRLS QEEKATLALD VQFLQHENVR LKELIPKPEP
160 170 180 190 200
RKIQMKWIIV GAVLTFLSLI PGGYAQSQTN NTIFTDMIAA CKYSTETLTE
210 220 230 240 250
NLDLRIKLAL ANITINDKLD AVRQILNFAF VPRAHWLRTV FYYIHYYEMW
260 270 280 290 300
NIFMFVLAIG TVMRSARPGT DLITLATSHL SGFRMAVLPT IPFHTTMTLW
310 320 330 340 350
VMNTLMVCYY FDNLLAITMA ILAPILGIIF LCFMEDSNYV SQIRGLIATA
360 370 380 390 400
VLIAGGHACL TLTGTTTSLF VVILTCRFIR MATVFIGTRF EIRDANGKVV
410 420 430 440 450
ATVPTRIKNV AFDFFQKLKQ SGVRVGVNDF VVIKPGALCI IDTPEGKGTG
460 470 480 490 500
FFSGNDIVTA AHVVGNNTFV SVCYEGLVYE AKVRYMPEKD IAFITCPGDL
510 520 530 540 550
HPTARLKLSK NPDYSCVTVM AYVNEDLVVS TATAMVHGNT LSYAVRTQDG
560 570 580 590 600
MSGAPVCDKY GRVLAVHQTN TGYTGGAVII DPADFHPVKA PSQVELLKEE
610 620 630 640 650
IERLKAQLNS AAENPVTVVT QQPIVTLEQK SVSDSDVVDL VRTAMEREMK
660 670 680 690 700
VLRDEINGIL APFLQKKKGK TKHGRGRVRR NLRKGVKLLT EEEYRELLEK
710 720 730 740 750
GLDRETFLDL IDRIIGERSG YPDYDDEDYY DEDDDGWGMV GDDVEFDYTE
760 770 780 790 800
VINFDQAKPT PAPRTTKPKP CPEPKIEAQP LDLSQKKEKQ PEHEQQVAKP
810 820 830 840 850
TKPQKIEPQP YSQTYGKAPI WESYDFDWDE DDAKFILPAP HRLTKADEIV
860 870 880 890 900
LGSKIVKLRT IIETAIKTQN YSALPEAVFE LDKAAYEAGL EGFLQRVKSK
910 920
NKAPKNYKGP QKTKGPKTTT H
Length:921
Mass (Da):103,493
Last modified:October 1, 2000 - 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:i445175FC4EEE8571
GO
Isoform nsp1ab (identifier: Q9IFX2-1) [UniParc]FASTAAdd to basket
The sequence of this isoform can be found in the external entry Q9IFX2.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Length:1,417
Mass (Da):161,559
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
AF260508 Genomic RNA Translation: AAF85962.1

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
AF260508 Genomic RNA Translation: AAF85962.1

3D structure databases

SMRiQ9IFX3
ModBaseiSearch...

Protein family/group databases

MEROPSiS01.109

Proteomic databases

PRIDEiQ9IFX3

Family and domain databases

InterProiView protein in InterPro
IPR022068 Astroviridae_polyprotein_1
IPR009003 Peptidase_S1_PA
PfamiView protein in Pfam
PF12285 DUF3621, 1 hit
SUPFAMiSSF50494 SSF50494, 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 nameiNS1A_HASV8
<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: Q9IFX3
<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: April 8, 2008
Last sequence update: October 1, 2000
Last modified: December 11, 2019
This is version 68 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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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