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Entry version 39 (08 May 2019)
Sequence version 1 (06 Mar 2013)
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Protein

Replicase polyprotein 1a

Gene

1a

Organism
Middle East respiratory syndrome-related coronavirus (isolate United Kingdom/H123990006/2012) (Betacoronavirus England 1) (Human coronavirus EMC)
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>
-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

The replicase polyprotein of coronaviruses is a multifunctional protein: it contains the activities necessary for the transcription of negative stranded RNA, leader RNA, subgenomic mRNAs and progeny virion RNA as well as proteinases responsible for the cleavage of the polyprotein into functional products.By similarity
Host translation inhibitor nsp1: Promotes the degradation of host mRNAs by inducing an endonucleolytic RNA cleavage in template mRNAs, and inhibits of host mRNA translation, a function that is separable from its RNA cleavage activity. By suppressing host gene expression, nsp1 facilitates efficient viral gene expression in infected cells and evasion from host immune response.1 Publication
Non-structural protein 2: May play a role in the modulation of host cell survival signaling pathway by interacting with host PHB and PHB2. Indeed, these two proteins play a role in maintaining the functional integrity of the mitochondria and protecting cells from various stresses.By similarity
Papain-like proteinase: Responsible for the cleavages located at the N-terminus of the replicase polyprotein. In addition, PL-PRO possesses a deubiquitinating/deISGylating activity and processes both 'Lys-48'- and 'Lys-63'-linked polyubiquitin chains from cellular substrates. Participates together with nsp4 in the assembly of virally-induced cytoplasmic double-membrane vesicles necessary for viral replication. Antagonizes innate immune induction of type I interferon by blocking the phosphorylation, dimerization and subsequent nuclear translocation of host IRF3. Prevents also host NF-kappa-B signaling.By similarity1 Publication
Non-structural protein 4: Participates in the assembly of virally-induced cytoplasmic double-membrane vesicles necessary for viral replication.By similarity
Proteinase 3CL-PRO: Cleaves the C-terminus of replicase polyprotein at 11 sites. Recognizes substrates containing the core sequence [ILMVF]-Q-|-[SGACN]. Also able to bind an ADP-ribose-1''-phosphate (ADRP).PROSITE-ProRule annotationBy similarity
Non-structural protein 6: Plays a role in the initial induction of autophagosomes from host reticulum endoplasmic. Later, limits the expansion of these phagosomes that are no longer able to deliver viral components to lysosomes.By similarity
Non-structural protein 7: Forms a hexadecamer with nsp8 (8 subunits of each) that may participate in viral replication by acting as a primase. Alternatively, may synthesize substantially longer products than oligonucleotide primers.By similarity
Non-structural protein 8: Forms a hexadecamer with nsp7 (8 subunits of each) that may participate in viral replication by acting as a primase. Alternatively, may synthesize substantially longer products than oligonucleotide primers.By similarity
Non-structural protein 9: May participate in viral replication by acting as a ssRNA-binding protein.By similarity
Non-structural protein 10: Plays a pivotal role in viral transcription by stimulating both nsp14 3'-5' exoribonuclease and nsp16 2'-O-methyltransferase activities. Therefore plays an essential role in viral mRNAs cap methylation.By similarity

<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

  • TSAVLQ-|-SGFRK-NH(2) and SGVTFQ-|-GKFKK the two peptides corresponding to the two self-cleavage sites of the SARS 3C-like proteinase are the two most reactive peptide substrates. The enzyme exhibits a strong preference for substrates containing Gln at P1 position and Leu at P2 position. EC:3.4.22.69
  • Thiol-dependent hydrolysis of ester, thioester, amide, peptide and isopeptide bonds formed by the C-terminal Gly of ubiquitin (a 76-residue protein attached to proteins as an intracellular targeting signal). EC:3.4.19.12

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<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 sitei1592For PL-PRO activityPROSITE-ProRule annotation1
Active sitei1759For PL-PRO activityPROSITE-ProRule annotation1
Active sitei3288For 3CL-PRO activityPROSITE-ProRule annotation1
Active sitei3395For 3CL-PRO activityPROSITE-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 bindingi4311Zinc1
Metal bindingi4314Zinc1
Metal bindingi4320Zinc1
Metal bindingi4327Zinc1
Metal bindingi4354Zinc1
Metal bindingi4357Zinc1
Metal bindingi4365Zinc1

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 fingeri1672 – 1709C4-typePROSITE-ProRule annotationAdd BLAST38
Zinc fingeri4311 – 4327Add BLAST17
Zinc fingeri4354 – 4367Add BLAST14

<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 functionHydrolase, Protease, RNA-binding, Thiol protease
Biological processActivation of host autophagy by virus, Decay of host mRNAs by virus, Eukaryotic host gene expression shutoff by virus, Eukaryotic host translation shutoff by virus, Host gene expression shutoff by virus, Host mRNA suppression by virus, Host-virus interaction, Inhibition of host innate immune response by virus, Inhibition of host interferon signaling pathway by virus, Inhibition of host IRF3 by virus, Inhibition of host ISG15 by virus, Inhibition of host RLR pathway by virus, Modulation of host ubiquitin pathway by viral deubiquitinase, Modulation of host ubiquitin pathway by virus, Ubl conjugation pathway, Viral immunoevasion
LigandMetal-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:
Replicase polyprotein 1a
Short name:
pp1a
Alternative name(s):
ORF1a polyprotein
Cleaved into the following 11 chains:
Alternative name(s):
Leader protein
Non-structural protein 2
Short name:
nsp2
Alternative name(s):
p65 homolog
Papain-like proteinase (EC:3.4.19.12, EC:3.4.22.69)
Short name:
PL-PRO
Alternative name(s):
Non-structural protein 3
Short name:
nsp3
Non-structural protein 4
Short name:
nsp4
3C-like proteinase (EC:3.4.22.-)
Short name:
3CL-PRO
Short name:
3CLp
Alternative name(s):
nsp5
Non-structural protein 6
Short name:
nsp6
Non-structural protein 7
Short name:
nsp7
Non-structural protein 8
Short name:
nsp8
Non-structural protein 9
Short name:
nsp9
Non-structural protein 10
Short name:
nsp10
Alternative name(s):
Growth factor-like peptide
Short name:
GFL
Non-structural protein 11
Short name:
nsp11
<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
ORF Names:1a
<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>OrganismiMiddle East respiratory syndrome-related coronavirus (isolate United Kingdom/H123990006/2012) (Betacoronavirus England 1) (Human coronavirus EMC)
<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 identifieri1263720 [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 lineageiVirusesssRNA virusesssRNA positive-strand viruses, no DNA stageNidoviralesCornidovirineaeCoronaviridaeOrthocoronavirinaeBetacoronavirusMerbecovirus
<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 hostiCamelus dromedarius (Dromedary) (Arabian camel) [TaxID: 9838]
Homo 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
  • UP000139997 <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

Non-structural protein 4 :
Non-structural protein 7 :
  • host perinuclear region By similarity
  • Note: nsp7, nsp8, nsp9 and nsp10 are localized in cytoplasmic foci, largely perinuclear. Late in infection, they merge into confluent complexes (By similarity).By similarity
Non-structural protein 8 :
  • host perinuclear region By similarity
  • Note: nsp7, nsp8, nsp9 and nsp10 are localized in cytoplasmic foci, largely perinuclear. Late in infection, they merge into confluent complexes (By similarity).By similarity
Non-structural protein 9 :
  • host perinuclear region By similarity
  • Note: nsp7, nsp8, nsp9 and nsp10 are localized in cytoplasmic foci, largely perinuclear. Late in infection, they merge into confluent complexes (By similarity).By similarity
Non-structural protein 10 :
  • host perinuclear region By similarity
  • Note: nsp7, nsp8, nsp9 and nsp10 are localized in cytoplasmic foci, largely perinuclear. Late in infection, they merge into confluent complexes (By similarity).By similarity

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'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>Transmembranei2105 – 2125HelicalSequence analysisAdd BLAST21
Transmembranei2177 – 2197HelicalSequence analysisAdd BLAST21
Transmembranei2281 – 2301HelicalSequence analysisAdd BLAST21
Transmembranei2305 – 2325HelicalSequence analysisAdd BLAST21
Transmembranei2330 – 2350HelicalSequence analysisAdd BLAST21
Transmembranei2757 – 2777HelicalSequence analysisAdd BLAST21
Transmembranei3028 – 3048HelicalSequence analysisAdd BLAST21
Transmembranei3062 – 3082HelicalSequence analysisAdd BLAST21
Transmembranei3104 – 3124HelicalSequence analysisAdd BLAST21
Transmembranei3125 – 3145HelicalSequence analysisAdd BLAST21
Transmembranei3559 – 3579HelicalSequence analysisAdd BLAST21
Transmembranei3593 – 3613HelicalSequence analysisAdd BLAST21
Transmembranei3618 – 3638HelicalSequence analysisAdd BLAST21
Transmembranei3664 – 3684HelicalSequence analysisAdd BLAST21
Transmembranei3691 – 3711HelicalSequence analysisAdd BLAST21
Transmembranei3740 – 3760HelicalSequence analysisAdd BLAST21
Transmembranei3765 – 3785HelicalSequence analysisAdd BLAST21

GO - Cellular componenti

Keywords - Cellular componenti

Host cytoplasm, 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_00004224541 – 193Host translation inhibitor nsp1By similarityAdd BLAST193
ChainiPRO_0000422455194 – 853Non-structural protein 2By similarityAdd BLAST660
ChainiPRO_0000422456854 – 2740Papain-like proteinaseBy similarityAdd BLAST1887
ChainiPRO_00004224572741 – 3247Non-structural protein 4Sequence analysisAdd BLAST507
ChainiPRO_00004224583248 – 35533C-like proteinaseBy similarityAdd BLAST306
ChainiPRO_00004224593554 – 3845Non-structural protein 6By similarityAdd BLAST292
ChainiPRO_00004224603846 – 3928Non-structural protein 7By similarityAdd BLAST83
ChainiPRO_00004224613929 – 4127Non-structural protein 8By similarityAdd BLAST199
ChainiPRO_00004224624128 – 4237Non-structural protein 9By similarityAdd BLAST110
ChainiPRO_00004224634238 – 4377Non-structural protein 10By similarityAdd BLAST140
ChainiPRO_00004224644378 – 4391Non-structural protein 11By similarityAdd BLAST14

<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

Specific enzymatic cleavages in vivo by its own proteases yield mature proteins. 3CL-PRO and PL-PRO proteinases are autocatalytically processed (By similarity).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>Sitei193 – 194CleavageBy similarity2
Sitei853 – 854Cleavage; by PL-PROBy similarity2
Sitei2740 – 2741Cleavage; by PL-PROBy similarity2
Sitei3247 – 3248Cleavage; by 3CL-PROBy similarity2
Sitei3553 – 3554Cleavage; by 3CL-PROBy similarity2
Sitei3845 – 3846Cleavage; by 3CL-PROBy similarity2
Sitei3928 – 3929Cleavage; by 3CL-PROBy similarity2
Sitei4127 – 4128Cleavage; by 3CL-PROBy similarity2
Sitei4237 – 4238Cleavage; by 3CL-PROBy similarity2
Sitei4377 – 4378Cleavage; by 3CL-PROBy similarity2

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
K9N638

<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

Nsp2 interacts with host PHB and PHB2. 3CL-PRO exists as monomer and homodimer. Nsp4 interacts with PL-PRO and nsp6. Only the homodimer shows catalytic activity. Eight copies of nsp7 and eight copies of nsp8 assemble to form a heterohexadecamer dsRNA-encircling ring structure. Nsp9 is a dimer.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

Secondary structure

14391
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

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
4R3DX-ray2.82A/B1481-1811[»]
5DUSX-ray1.43A1110-1273[»]
5HIHX-ray1.66A1109-1275[»]
5WKJX-ray2.05A3248-3553[»]
5WKKX-ray1.55A3248-3553[»]
5WKLX-ray1.85A3248-3553[»]
5WKMX-ray2.25A3248-3553[»]

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

More...
SMRi
K9N638

Database of comparative protein structure models

More...
ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
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>Domaini1110 – 1276MacroPROSITE-ProRule annotationAdd BLAST167
Domaini1552 – 1823Peptidase C16PROSITE-ProRule annotationAdd BLAST272
Domaini3248 – 3553Peptidase C30PROSITE-ProRule annotationAdd BLAST306

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>Regioni2040 – 2363HD1Add BLAST324
Regioni2761 – 3171HD2Add BLAST411
Regioni3571 – 3785HD3Add BLAST215

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

The hydrophobic domains (HD) could mediate the membrane association of the replication complex and thereby alter the architecture of the host cell membrane.

<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

Zinc finger

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Zinc fingeri1672 – 1709C4-typePROSITE-ProRule annotationAdd BLAST38
Zinc fingeri4311 – 4327Add BLAST17
Zinc fingeri4354 – 4367Add BLAST14

Keywords - Domaini

Repeat, Transmembrane, Transmembrane helix, Zinc-finger

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.150.420, 1 hit
1.10.8.370, 1 hit
2.40.10.250, 1 hit
3.10.20.350, 1 hit
3.40.220.20, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR032505 Corona_NSP4_C
IPR002589 Macro_dom
IPR032592 NAR_dom
IPR036333 NSP10_sf
IPR024375 Nsp3_coronavir
IPR038400 Nsp3_coronavir_sf
IPR038123 NSP4_C_sf
IPR014828 NSP7
IPR037204 NSP7_sf
IPR014829 NSP8
IPR037230 NSP8_sf
IPR014822 NSP9
IPR036499 NSP9_sf
IPR008740 Peptidase_C30
IPR013016 Peptidase_C30/C16
IPR009003 Peptidase_S1_PA
IPR038083 pp1a/1ab
IPR018995 RNA_synth_NSP10_coronavirus
IPR014827 Viral_protease

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF16348 Corona_NSP4_C, 1 hit
PF01661 Macro, 1 hit
PF16251 NAR, 1 hit
PF09401 NSP10, 1 hit
PF08716 nsp7, 1 hit
PF08717 nsp8, 1 hit
PF08710 nsp9, 1 hit
PF05409 Peptidase_C30, 1 hit
PF11633 SUD-M, 1 hit
PF08715 Viral_protease, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00506 A1pp, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF101816 SSF101816, 1 hit
SSF140367 SSF140367, 1 hit
SSF143076 SSF143076, 1 hit
SSF144246 SSF144246, 1 hit
SSF159936 SSF159936, 1 hit
SSF50494 SSF50494, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51442 M_PRO, 1 hit
PS51154 MACRO, 1 hit
PS51124 PEPTIDASE_C16, 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
Isoform Replicase polyprotein 1a (identifier: K9N638-1) [UniParc]FASTAAdd to basket
Also known as: pp1a, ORF1a polyprotein

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
MSFVAGVTAQ GARGTYRAAL NSEKHQDHVS LTVPLCGSGN LVEKLSPWFM
60 70 80 90 100
DGENAYEVVK AMLLKKEPLL YVPIRLAGHT RHLPGPRVYL VERLIACENP
110 120 130 140 150
FMVNQLAYSS SANGSLVGTT LQGKPIGMFF PYDIELVTGK QNILLRKYGR
160 170 180 190 200
GGYHYTPFHY ERDNTSCPEW MDDFEADPKG KYAQNLLKKL IGGDVTPVDQ
210 220 230 240 250
YMCGVDGKPI SAYAFLMAKD GITKLADVEA DVAARADDEG FITLKNNLYR
260 270 280 290 300
LVWHVERKDV PYPKQSIFTI NSVVQKDGVE NTPPHYFTLG CKILTLTPRN
310 320 330 340 350
KWSGVSDLSL KQKLLYTFYG KESLENPTYI YHSAFIECGS CGNDSWLTGN
360 370 380 390 400
AIQGFACGCG ASYTANDVEV QSSGMIKPNA LLCATCPFAK GDSCSSNCKH
410 420 430 440 450
SVAQLVSYLS ERCNVIADSK SFTLIFGGVA YAYFGCEEGT MYFVPRAKSV
460 470 480 490 500
VSRIGDSIFT GCTGSWNKVT QIANMFLEQT QHSLNFVGEF VVNDVVLAIL
510 520 530 540 550
SGTTTNVDKI RQLLKGVTLD KLRDYLADYD VAVTAGPFMD NAINVGGTGL
560 570 580 590 600
QYAAITAPYV VLTGLGESFK KVATIPYKVC NSVKDTLTYY AHSVLYRVFP
610 620 630 640 650
YDMDSGVSSF SELLFDCVDL SVASTYFLVR LLQDKTGDFM STIITSCQTA
660 670 680 690 700
VSKLLDTCFE ATEATFNFLL DLAGLFRIFL RNAYVYTSQG FVVVNGKVST
710 720 730 740 750
LVKQVLDLLN KGMQLLHTKV SWAGSNISAV IYSGRESLIF PSGTYYCVTT
760 770 780 790 800
KAKSVQQDLD VILPGEFSKK QLGLLQPTDN STTVSVTVSS NMVETVVGQL
810 820 830 840 850
EQTNMHSPDV IVGDYVIISE KLFVRSKEED GFAFYPACTN GHAVPTLFRL
860 870 880 890 900
KGGAPVKKVA FGGDQVHEVA AVRSVTVEYN IHAVLDTLLA SSSLRTFVVD
910 920 930 940 950
KSLSIEEFAD VVKEQVSDLL VKLLRGMPIP DFDLDDFIDA PCYCFNAEGD
960 970 980 990 1000
ASWSSTMIFS LHPVECDEEC SEVEASDLEE GESECISETS TEQVDVSHEI
1010 1020 1030 1040 1050
SDDEWAAAVD EAFPLDEAED VTESVQEEAQ PVEVPVEDIA QVVIADTLQE
1060 1070 1080 1090 1100
TPVVSDTVEV PPQVVKLPSE PQTIQPEVKE VAPVYEADTE QTQSVTVKPK
1110 1120 1130 1140 1150
RLRKKRNVDP LSNFEHKVIT ECVTIVLGDA IQVAKCYGES VLVNAANTHL
1160 1170 1180 1190 1200
KHGGGIAGAI NAASKGAVQK ESDEYILAKG PLQVGDSVLL QGHSLAKNIL
1210 1220 1230 1240 1250
HVVGPDARAK QDVSLLSKCY KAMNAYPLVV TPLVSAGIFG VKPAVSFDYL
1260 1270 1280 1290 1300
IREAKTRVLV VVNSQDVYKS LTIVDIPQSL TFSYDGLRGA IRKAKDYGFT
1310 1320 1330 1340 1350
VFVCTDNSAN TKVLRNKGVD YTKKFLTVDG VQYYCYTSKD TLDDILQQAN
1360 1370 1380 1390 1400
KSVGIISMPL GYVSHGLDLI QAGSVVRRVN VPYVCLLANK EQEAILMSED
1410 1420 1430 1440 1450
VKLNPSEDFI KHVRTNGGYN SWHLVEGELL VQDLRLNKLL HWSDQTICYK
1460 1470 1480 1490 1500
DSVFYVVKNS TAFPFETLSA CRAYLDSRTT QQLTIEVLVT VDGVNFRTVV
1510 1520 1530 1540 1550
LNNKNTYRSQ LGCVFFNGAD ISDTIPDEKQ NGHSLYLADN LTADETKALK
1560 1570 1580 1590 1600
ELYGPVDPTF LHRFYSLKAA VHKWKMVVCD KVRSLKLSDN NCYLNAVIMT
1610 1620 1630 1640 1650
LDLLKDIKFV IPALQHAFMK HKGGDSTDFI ALIMAYGNCT FGAPDDASRL
1660 1670 1680 1690 1700
LHTVLAKAEL CCSARMVWRE WCNVCGIKDV VLQGLKACCY VGVQTVEDLR
1710 1720 1730 1740 1750
ARMTYVCQCG GERHRQIVEH TTPWLLLSGT PNEKLVTTST APDFVAFNVF
1760 1770 1780 1790 1800
QGIETAVGHY VHARLKGGLI LKFDSGTVSK TSDWKCKVTD VLFPGQKYSS
1810 1820 1830 1840 1850
DCNVVRYSLD GNFRTEVDPD LSAFYVKDGK YFTSEPPVTY SPATILAGSV
1860 1870 1880 1890 1900
YTNSCLVSSD GQPGGDAISL SFNNLLGFDS SKPVTKKYTY SFLPKEDGDV
1910 1920 1930 1940 1950
LLAEFDTYDP IYKNGAMYKG KPILWVNKAS YDTNLNKFNR ASLRQIFDVA
1960 1970 1980 1990 2000
PIELENKFTP LSVESTPVEP PTVDVVALQQ EMTIVKCKGL NKPFVKDNVS
2010 2020 2030 2040 2050
FVADDSGTPV VEYLSKEDLH TLYVDPKYQV IVLKDNVLSS MLRLHTVESG
2060 2070 2080 2090 2100
DINVVAASGS LTRKVKLLFR ASFYFKEFAT RTFTATTAVG SCIKSVVRHL
2110 2120 2130 2140 2150
GVTKGILTGC FSFVKMLFML PLAYFSDSKL GTTEVKVSAL KTAGVVTGNV
2160 2170 2180 2190 2200
VKQCCTAAVD LSMDKLRRVD WKSTLRLLLM LCTTMVLLSS VYHLYVFNQV
2210 2220 2230 2240 2250
LSSDVMFEDA QGLKKFYKEV RAYLGISSAC DGLASAYRAN SFDVPTFCAN
2260 2270 2280 2290 2300
RSAMCNWCLI SQDSITHYPA LKMVQTHLSH YVLNIDWLWF AFETGLAYML
2310 2320 2330 2340 2350
YTSAFNWLLL AGTLHYFFAQ TSIFVDWRSY NYAVSSAFWL FTHIPMAGLV
2360 2370 2380 2390 2400
RMYNLLACLW LLRKFYQHVI NGCKDTACLL CYKRNRLTRV EASTVVCGGK
2410 2420 2430 2440 2450
RTFYITANGG ISFCRRHNWN CVDCDTAGVG NTFICEEVAN DLTTALRRPI
2460 2470 2480 2490 2500
NATDRSHYYV DSVTVKETVV QFNYRRDGQP FYERFPLCAF TNLDKLKFKE
2510 2520 2530 2540 2550
VCKTTTGIPE YNFIIYDSSD RGQESLARSA CVYYSQVLCK SILLVDSSLV
2560 2570 2580 2590 2600
TSVGDSSEIA TKMFDSFVNS FVSLYNVTRD KLEKLISTAR DGVRRGDNFH
2610 2620 2630 2640 2650
SVLTTFIDAA RGPAGVESDV ETNEIVDSVQ YAHKHDIQIT NESYNNYVPS
2660 2670 2680 2690 2700
YVKPDSVSTS DLGSLIDCNA ASVNQIVLRN SNGACIWNAA AYMKLSDALK
2710 2720 2730 2740 2750
RQIRIACRKC NLAFRLTTSK LRANDNILSV RFTANKIVGG APTWFNALRD
2760 2770 2780 2790 2800
FTLKGYVLAT IIVFLCAVLM YLCLPTFSMV PVEFYEDRIL DFKVLDNGII
2810 2820 2830 2840 2850
RDVNPDDKCF ANKHRSFTQW YHEHVGGVYD NSITCPLTVA VIAGVAGARI
2860 2870 2880 2890 2900
PDVPTTLAWV NNQIIFFVSR VFANTGSVCY TPIDEIPYKS FSDSGCILPS
2910 2920 2930 2940 2950
ECTMFRDAEG RMTPYCHDPT VLPGAFAYSQ MRPHVRYDLY DGNMFIKFPE
2960 2970 2980 2990 3000
VVFESTLRIT RTLSTQYCRF GSCEYAQEGV CITTNGSWAI FNDHHLNRPG
3010 3020 3030 3040 3050
VYCGSDFIDI VRRLAVSLFQ PITYFQLTTS LVLGIGLCAF LTLLFYYINK
3060 3070 3080 3090 3100
VKRAFADYTQ CAVIAVVAAV LNSLCICFVA SIPLCIVPYT ALYYYATFYF
3110 3120 3130 3140 3150
TNEPAFIMHV SWYIMFGPIV PIWMTCVYTV AMCFRHFFWV LAYFSKKHVE
3160 3170 3180 3190 3200
VFTDGKLNCS FQDAASNIFV INKDTYAALR NSLTNDAYSR FLGLFNKYKY
3210 3220 3230 3240 3250
FSGAMETAAY REAAACHLAK ALQTYSETGS DLLYQPPNCS ITSGVLQSGL
3260 3270 3280 3290 3300
VKMSHPSGDV EACMVQVTCG SMTLNGLWLD NTVWCPRHVM CPADQLSDPN
3310 3320 3330 3340 3350
YDALLISMTN HSFSVQKHIG APANLRVVGH AMQGTLLKLT VDVANPSTPA
3360 3370 3380 3390 3400
YTFTTVKPGA AFSVLACYNG RPTGTFTVVM RPNYTIKGSF LCGSCGSVGY
3410 3420 3430 3440 3450
TKEGSVINFC YMHQMELANG THTGSAFDGT MYGAFMDKQV HQVQLTDKYC
3460 3470 3480 3490 3500
SVNVVAWLYA AILNGCAWFV KPNRTSVVSF NEWALANQFT EFVGTQSVDM
3510 3520 3530 3540 3550
LAVKTGVAIE QLLYAIQQLY TGFQGKQILG STMLEDEFTP EDVNMQIMGV
3560 3570 3580 3590 3600
VMQSGVRKVT YGTAHWLFAT LVSTYVIILQ ATKFTLWNYL FETIPTQLFP
3610 3620 3630 3640 3650
LLFVTMAFVM LLVKHKHTFL TLFLLPVAIC LTYANIVYEP TTPISSALIA
3660 3670 3680 3690 3700
VANWLAPTNA YMRTTHTDIG VYISMSLVLV IVVKRLYNPS LSNFALALCS
3710 3720 3730 3740 3750
GVMWLYTYSI GEASSPIAYL VFVTTLTSDY TITVFVTVNL AKVCTYAIFA
3760 3770 3780 3790 3800
YSPQLTLVFP EVKMILLLYT CLGFMCTCYF GVFSLLNLKL RAPMGVYDFK
3810 3820 3830 3840 3850
VSTQEFRFMT ANNLTAPRNS WEAMALNFKL IGIGGTPCIK VAAMQSKLTD
3860 3870 3880 3890 3900
LKCTSVVLLS VLQQLHLEAN SRAWAFCVKC HNDILAATDP SEAFEKFVSL
3910 3920 3930 3940 3950
FATLMTFSGN VDLDALASDI FDTPSVLQAT LSEFSHLATF AELEAAQKAY
3960 3970 3980 3990 4000
QEAMDSGDTS PQVLKALQKA VNIAKNAYEK DKAVARKLER MADQAMTSMY
4010 4020 4030 4040 4050
KQARAEDKKA KIVSAMQTML FGMIKKLDND VLNGIISNAR NGCIPLSVIP
4060 4070 4080 4090 4100
LCASNKLRVV IPDFTVWNQV VTYPSLNYAG ALWDITVINN VDNEIVKSSD
4110 4120 4130 4140 4150
VVDSNENLTW PLVLECTRAS TSAVKLQNNE IKPSGLKTMV VSAGQEQTNC
4160 4170 4180 4190 4200
NTSSLAYYEP VQGRKMLMAL LSDNAYLKWA RVEGKDGFVS VELQPPCKFL
4210 4220 4230 4240 4250
IAGPKGPEIR YLYFVKNLNN LHRGQVLGHI AATVRLQAGS NTEFASNSSV
4260 4270 4280 4290 4300
LSLVNFTVDP QKAYLDFVNA GGAPLTNCVK MLTPKTGTGI AISVKPESTA
4310 4320 4330 4340 4350
DQETYGGASV CLYCRAHIEH PDVSGVCKYK GKFVQIPAQC VRDPVGFCLS
4360 4370 4380 4390
NTPCNVCQYW IGYGCNCDSL RQAALPQSKD SNFLNESGVL L
Note: Produced by conventional translation.
Length:4,391
Mass (Da):486,059
Last modified:March 6, 2013 - 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:iD0A87AE59773BBB8
GO
Isoform Replicase polyprotein 1ab (identifier: K9N7C7-1) [UniParc]FASTAAdd to basket
Also known as: pp1ab
The sequence of this isoform can be found in the external entry K9N7C7.
Isoforms of the same protein are often annotated in two different entries if their sequences differ significantly.
Note: Produced by -1 ribosomal frameshifting at the 1a-1b genes boundary.
Length:7,078
Mass (Da):789,563
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

More...
DDBJi
Links Updated
KC164505 Genomic RNA Translation: AFY13305.1

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
KC164505 Genomic RNA Translation: AFY13305.1

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
4R3DX-ray2.82A/B1481-1811[»]
5DUSX-ray1.43A1110-1273[»]
5HIHX-ray1.66A1109-1275[»]
5WKJX-ray2.05A3248-3553[»]
5WKKX-ray1.55A3248-3553[»]
5WKLX-ray1.85A3248-3553[»]
5WKMX-ray2.25A3248-3553[»]
SMRiK9N638
ModBaseiSearch...
MobiDBiSearch...

Proteomic databases

PRIDEiK9N638

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

Gene3Di1.10.150.420, 1 hit
1.10.8.370, 1 hit
2.40.10.250, 1 hit
3.10.20.350, 1 hit
3.40.220.20, 1 hit
InterProiView protein in InterPro
IPR032505 Corona_NSP4_C
IPR002589 Macro_dom
IPR032592 NAR_dom
IPR036333 NSP10_sf
IPR024375 Nsp3_coronavir
IPR038400 Nsp3_coronavir_sf
IPR038123 NSP4_C_sf
IPR014828 NSP7
IPR037204 NSP7_sf
IPR014829 NSP8
IPR037230 NSP8_sf
IPR014822 NSP9
IPR036499 NSP9_sf
IPR008740 Peptidase_C30
IPR013016 Peptidase_C30/C16
IPR009003 Peptidase_S1_PA
IPR038083 pp1a/1ab
IPR018995 RNA_synth_NSP10_coronavirus
IPR014827 Viral_protease
PfamiView protein in Pfam
PF16348 Corona_NSP4_C, 1 hit
PF01661 Macro, 1 hit
PF16251 NAR, 1 hit
PF09401 NSP10, 1 hit
PF08716 nsp7, 1 hit
PF08717 nsp8, 1 hit
PF08710 nsp9, 1 hit
PF05409 Peptidase_C30, 1 hit
PF11633 SUD-M, 1 hit
PF08715 Viral_protease, 1 hit
SMARTiView protein in SMART
SM00506 A1pp, 1 hit
SUPFAMiSSF101816 SSF101816, 1 hit
SSF140367 SSF140367, 1 hit
SSF143076 SSF143076, 1 hit
SSF144246 SSF144246, 1 hit
SSF159936 SSF159936, 1 hit
SSF50494 SSF50494, 1 hit
PROSITEiView protein in PROSITE
PS51442 M_PRO, 1 hit
PS51154 MACRO, 1 hit
PS51124 PEPTIDASE_C16, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
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 nameiR1A_CVEMC
<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: K9N638
<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: May 29, 2013
Last sequence update: March 6, 2013
Last modified: May 8, 2019
This is version 39 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, Complete proteome, Reference proteome

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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