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Entry version 113 (18 Sep 2019)
Sequence version 1 (01 Nov 1996)
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Protein

Outer capsid protein VP4

Gene
N/A
Organism
Rotavirus sp.
Status
Unreviewed-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

Outer capsid protein VP4: Spike-forming protein that mediates virion attachment to the host epithelial cell receptors and plays a major role in cell penetration, determination of host range restriction and virulence. Rotavirus attachment and entry into the host cell probably involves multiple sequential contacts between the outer capsid proteins VP4 and VP7, and the cell receptors. It is subsequently lost, together with VP7, following virus entry into the host cell. Following entry into the host cell, low intracellular or intravesicular Ca2+ concentration probably causes the calcium-stabilized VP7 trimers to dissociate from the virion. This step is probably necessary for the membrane-disrupting entry step and the release of VP4, which is locked onto the virion by VP7.UniRule annotation
Outer capsid protein VP5*: Forms the spike "foot" and "body" and acts as a membrane permeabilization protein that mediates release of viral particles from endosomal compartments into the cytoplasm. During entry, the part of VP5* that protrudes from the virus folds back on itself and reorganizes from a local dimer to a trimer. This reorganization may be linked to membrane penetration by exposing VP5* hydrophobic region. In integrin-dependent strains, VP5* targets the integrin heterodimer ITGA2/ITGB1 for cell attachment.SAAS annotation

Caution

Lacks conserved residue(s) required for the propagation of feature annotation.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei87N-acetyl-D-glucosamineCombined sources1
Binding sitei114FucoseCombined sources1
Binding sitei116N-acetyl-D-glucosamineCombined sources1
Binding sitei129FucoseCombined sources1
Binding sitei202FucoseCombined sources1

<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 - 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 functionHemagglutininUniRule annotationSAAS annotation
Biological processHost-virus interaction, Viral attachment to host cellUniRule annotationSAAS annotation, Viral penetration into host cytoplasm, Viral penetration via permeabilization of host membraneUniRule annotationSAAS annotation, Virus entry into host cell

Protein family/group databases

UniLectin database of carbohydrate-binding proteins

More...
UniLectini
Q86169

<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:
Outer capsid protein VP4UniRule annotationSAAS annotation
Alternative name(s):
HemagglutininUniRule annotation
<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>OrganismiRotavirus sp.Imported
<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 identifieri10970 [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 lineageiVirusesRiboviriaReoviridaeSedoreovirinaeRotavirusunclassified Rotavirus

<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

  • Virion UniRule annotation
  • Host rough endoplasmic reticulum UniRule annotation
  • Host cell membrane UniRule annotation
  • Host endoplasmic reticulum-Golgi intermediate compartment UniRule annotation
  • Note: The outer layer contains 180 copies of VP4, grouped as 60 dimers. Immature double-layered particles assembled in the cytoplasm bud across the membrane of the endoplasmic reticulum, acquiring during this process a transient lipid membrane that is modified with the ER resident viral glycoproteins NSP4 and VP7; these enveloped particles also contain VP4. As the particles move towards the interior of the ER cisternae, the transient lipid membrane and the non-structural protein NSP4 are lost, while the virus surface proteins VP4 and VP7 rearrange to form the outermost virus protein layer, yielding mature infectious triple-layered particles.UniRule annotation

GO - Cellular componenti

Keywords - Cellular componenti

Capsid protein, Host cell membraneUniRule annotationSAAS annotation, Host cytoplasm, Host cytoskeletonSAAS annotation, Host endoplasmic reticulumUniRule annotationSAAS annotation, Host membrane, Membrane, Outer capsid proteinUniRule annotationSAAS annotation, Virion

<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

<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

Outer capsid protein VP4: Proteolytic cleavage by trypsin results in activation of VP4 functions and greatly increases infectivity. The penetration into the host cell is dependent on trypsin treatment of VP4. It produces two peptides, VP5* and VP8* that remain associated with the virion. Cleavage of VP4 by trypsin probably occurs in vivo in the lumen of the intestine prior to infection of enterocytes. Trypsin seems to be incorporated into the three-layered viral particles but remains inctive as long as the viral outer capsid is intact and would only be activated upon the solubilization of the latter.UniRule annotation

Keywords - PTMi

Cleavage on pair of basic residuesUniRule annotation, Disulfide bondSAAS annotation

<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

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SMRi
Q86169

Database of comparative protein structure models

More...
ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

More...
PDBe-KBi
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>Domaini250 – 474Rota_VP4_MIDInterPro annotationAdd BLAST225
Domaini485 – 776VP4_helicalInterPro annotationAdd BLAST292

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>Regioni187 – 189Galactose bindingCombined sources3

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and domains’ section denotes the positions of regions of coiled coil within the protein.<p><a href='/help/coiled' target='_top'>More...</a></p>Coiled coili484 – 511UniRule annotationAdd BLAST28

<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

Outer capsid protein VP4: The VP4 spike is divided into a foot, a stalk and body, and a head.UniRule annotation

<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 rotavirus VP4 family.UniRule annotationSAAS annotation

Keywords - Domaini

Coiled coilUniRule annotationSAAS annotation

Family and domain databases

HAMAP database of protein families

More...
HAMAPi
MF_04125 Rota_VP4, 1 hit

Integrated resource of protein families, domains and functional sites

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InterProi
View protein in InterPro
IPR013320 ConA-like_dom_sf
IPR042546 Rota_A_VP4
IPR035330 Rota_VP4_MID
IPR038017 Rota_VP4_MID_sf
IPR035329 VP4_helical

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF17477 Rota_VP4_MID, 1 hit
PF17478 VP4_helical, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF111379 SSF111379, 1 hit
SSF49899 SSF49899, 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>. 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_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.

Q86169-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MASLIYRQLL SNSYVTNISD EVSEIGARKT TNVTVNPGPF AQTGYAPVNW
60 70 80 90 100
GHGELSDSTL VQPTLDGPYQ PTTFNLPIDY WMLIAPTQIG RVAEGTNTTD
110 120 130 140 150
RWFACVLVEP NVQNTQREYV LDGQTVQLQV SNNSSTLWKF ILFIKLEKNG
160 170 180 190 200
AYSQYSTLST SNKLCAWMKR EGRVYWYAGT TPNASESYYL TINNDNSNVS
210 220 230 240 250
CDAEFYLIPR SQTELCTQYI NNGLPPIQNT RNVVPVSITS REIRHTRAQM
260 270 280 290 300
NEDIVVSKTS LWKEMQDNRD ITIRFKFANS IVKSGGLGYK WSEISFKPMN
310 320 330 340 350
YQYTYTRDGE EITAHTTCSV NGVNDFSYNG GTLPTDFAIS RFEVIKENSY
360 370 380 390 400
VYIDYWDDSQ AFRNMVYVRS LSANLNDVIC SGGDYSFALP VGAYPVMSGG
410 420 430 440 450
AVTLSPAGVT LSTQFTDYVS LNSLRFRFRL AVSEPPFSIS RTRLSGIYGL
460 470 480 490 500
PAANPNNNVE YYEIAGRFSL ISLVPTNDDY QTPIANSVTV RQDLERQLGE
510 520 530 540 550
LREEFNSLSQ EIALSQLIDL ATLPLDMFSM FSGIKSTVEA VKSMTTNIMK
560 570 580 590 600
KFKTSNLANA ISDLTNSMSD AASSISRSAS IRSVGSNTTM RISTAIQTGE
610 620 630 640 650
DLKTVTDAST QVSNVSRSLR LREFTTQTDN LSFDDISAAV LKTKLDKSTQ
660 670 680 690 700
ISQNTIPDII SESSEKFIPM RTYRVMDNDT AFETGIDGTF YAYKVDTFDE
710 720 730 740 750
IPFDVEKFNK LITDSPVLSA IIDFKTLKNL NDNYGITKTQ AMELLQSNPR
760 770
TLKEFINNNN PIIRNRIENL IAQCRL
Length:776
Mass (Da):86,921
Last modified:November 1, 1996 - 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:iE0FB1AE73BFB840C
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

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DDBJi
Links Updated
L20875 mRNA Translation: AAA21092.1

<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
L20875 mRNA Translation: AAA21092.1

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
4DRRX-ray1.50A64-224[»]
4DRVX-ray1.56A64-224[»]
4DS0X-ray1.56A64-224[»]
SMRiQ86169
ModBaseiSearch...
PDBe-KBiSearch...

Protein family/group databases

UniLectiniQ86169

Family and domain databases

HAMAPiMF_04125 Rota_VP4, 1 hit
InterProiView protein in InterPro
IPR013320 ConA-like_dom_sf
IPR042546 Rota_A_VP4
IPR035330 Rota_VP4_MID
IPR038017 Rota_VP4_MID_sf
IPR035329 VP4_helical
PfamiView protein in Pfam
PF17477 Rota_VP4_MID, 1 hit
PF17478 VP4_helical, 1 hit
SUPFAMiSSF111379 SSF111379, 1 hit
SSF49899 SSF49899, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

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ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

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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 nameiQ86169_9REOV
<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: Q86169
<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/TrEMBL: November 1, 1996
Last sequence update: November 1, 1996
Last modified: September 18, 2019
This is version 113 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 statusiUnreviewed (UniProtKB/TrEMBL)

<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-structureCombined sources
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