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Entry version 99 (25 May 2022)
Sequence version 2 (24 May 2004)
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Protein

Endogenous retrovirus group K member 13-1 Env polyprotein

Gene

ERVK13-1

Organism
Homo sapiens (Human)
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 transcript 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

Retroviral envelope proteins mediate receptor recognition and membrane fusion during early infection. Endogenous envelope proteins may have kept, lost or modified their original function during evolution (By similarity).

By similarity

SU mediates receptor recognition.

By similarity

TM anchors the envelope heterodimer to the viral membrane through one transmembrane domain. The other hydrophobic domain, called fusion peptide, mediates fusion of the viral membrane with the target cell membrane (By similarity).

By similarity

Caution

No predictable signal peptide.Curated

<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

Enzyme and pathway databases

Pathway Commons web resource for biological pathway data

More...
PathwayCommonsi
Q9NX77

SignaLink: a signaling pathway resource with multi-layered regulatory networks

More...
SignaLinki
Q9NX77

<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:
Endogenous retrovirus group K member 13-1 Env polyprotein
Alternative name(s):
Envelope polyprotein
HERV-K_16p13.3 provirus ancestral Env polyprotein
Cleaved into the following 2 chains:
Surface protein
Short name:
SU
Transmembrane protein
Short name:
TM
<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
<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>OrganismiHomo sapiens (Human)
<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 identifieri9606 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
<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
  • UP000005640 <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: Unplaced

Organism-specific databases

Human Gene Nomenclature Database

More...
HGNCi
HGNC:27548, ERVK13-1

neXtProt; the human protein knowledge platform

More...
neXtProti
NX_Q9NX77

<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>Transmembranei459 – 479HelicalSequence analysisAdd BLAST21

<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>Keywords - Cellular componenti

Cell membrane, Membrane, Viral envelope protein, Virion

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Miscellaneous databases

Pharos NIH Druggable Genome Knowledgebase

More...
Pharosi
Q9NX77, Tdark

Genetic variation databases

BioMuta curated single-nucleotide variation and disease association database

More...
BioMutai
HGNC:27548

Domain mapping of disease mutations (DMDM)

More...
DMDMi
47605749

<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_00000085301 – 482Endogenous retrovirus group K member 13-1 Env polyproteinAdd BLAST482
ChainiPRO_00000085311 – 289Surface proteinBy similarityAdd BLAST289
ChainiPRO_0000008532290 – 482Transmembrane proteinBy similarityAdd BLAST193

<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

Specific enzymatic cleavages in vivo yield the mature SU and TM proteins.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>Sitei289 – 290CleavageBy similarity2

Keywords - PTMi

Cleavage on pair of basic residues, Disulfide bond

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
Q9NX77

PeptideAtlas

More...
PeptideAtlasi
Q9NX77

PRoteomics IDEntifications database

More...
PRIDEi
Q9NX77

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Primary culture of CD34+, lung, thymus, ileal mucosa, small intestine, and testis.

<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

The surface (SU) and transmembrane (TM) proteins form a heterodimer. SU and TM are attached by noncovalent interactions or by a labile interchain disulfide bond (By similarity).

By similarity

Protein-protein interaction databases

Protein interaction database and analysis system

More...
IntActi
Q9NX77, 1 interactor

Miscellaneous databases

RNAct, Protein-RNA interaction predictions for model organisms.

More...
RNActi
Q9NX77, protein

<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

AlphaFold Protein Structure Database

More...
AlphaFoldDBi
Q9NX77

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

<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

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>Regioni290 – 310Fusion peptideSequence analysisAdd BLAST21

<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

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q9NX77

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000328, GP41-like
IPR029104, HERV-K_env

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00517, GP41, 1 hit
PF13804, HERV-K_env_2, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: 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.

Q9NX77-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MWTVPSFTND SYQVYNVFST NSFQLLTVKR TPHEAWRVPL TTKTNKTKGL
60 70 80 90 100
PDCPKKPTNG PFIVTSILWD NCNAPKAVVL QTLAMGIVID WAPKGHYWQD
110 120 130 140 150
CSSKNTLCSE FIYSLDYIEH GWQSYTMRQR VSPYPFKWMD TGIAPPRPKI
160 170 180 190 200
IHPFFTPEHP ELWKLAAALS GIKIWNTTYQ LLRTKTKTPT FNITLISEWV
210 220 230 240 250
IPIRSCVKPP YMLLVGNIIM MPDAQTIECH NCKLFTCIDA TFNPTTSILL
260 270 280 290 300
VRAREGVWIP VSLHRPWESS PSIHIVNEVL KDILKRTKRF IFTLIAVLAG
310 320 330 340 350
LLAVTATAAT AGVAIRSSVQ TAHYVEACQK NSSRLWNSQA QIDQKLANQI
360 370 380 390 400
NDLRQSVTWL GDRVMNLQHR MQLQCDWNTS DYCITPYAYN QDQHSWENVS
410 420 430 440 450
RHLKAWDDNL TLDISQLKEQ IFEASQAHLS TVPGSHIFEG ITKQLPDFNP
460 470 480
FKWLKPVRGS LLLLALLILV CLCCLLLVCR CL
Length:482
Mass (Da):55,045
Last modified:May 24, 2004 - v2
<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:iA4AAD5B0E9B7AECC
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti94K → E in AX747190 (Ref. 1) Curated1
Sequence conflicti94K → E in AK091794 (PubMed:14702039).Curated1

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
AX747190 mRNA No translation available.
AK000400 mRNA Translation: BAA91140.1
AK091794 mRNA No translation available.
AK095440 mRNA No translation available.
AK097014 mRNA No translation available.
AK097909 mRNA No translation available.
AK292678 mRNA Translation: BAF85367.1
BC043252 mRNA No translation available.

<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
AX747190 mRNA No translation available.
AK000400 mRNA Translation: BAA91140.1
AK091794 mRNA No translation available.
AK095440 mRNA No translation available.
AK097014 mRNA No translation available.
AK097909 mRNA No translation available.
AK292678 mRNA Translation: BAF85367.1
BC043252 mRNA No translation available.

3D structure databases

AlphaFoldDBiQ9NX77
ModBaseiSearch...
SWISS-MODEL-WorkspaceiSubmit a new modelling project...

Protein-protein interaction databases

IntActiQ9NX77, 1 interactor

Genetic variation databases

BioMutaiHGNC:27548
DMDMi47605749

Proteomic databases

jPOSTiQ9NX77
PeptideAtlasiQ9NX77
PRIDEiQ9NX77

Organism-specific databases

GeneCards: human genes, protein and diseases

More...
GeneCardsi
ERVK13-1
HGNCiHGNC:27548, ERVK13-1
neXtProtiNX_Q9NX77

GenAtlas: human gene database

More...
GenAtlasi
Search...

Phylogenomic databases

PhylomeDBiQ9NX77

Enzyme and pathway databases

PathwayCommonsiQ9NX77
SignaLinkiQ9NX77

Miscellaneous databases

PharosiQ9NX77, Tdark

Protein Ontology

More...
PROi
PR:Q9NX77
RNActiQ9NX77, protein

Family and domain databases

InterProiView protein in InterPro
IPR000328, GP41-like
IPR029104, HERV-K_env
PfamiView protein in Pfam
PF00517, GP41, 1 hit
PF13804, HERV-K_env_2, 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 nameiENK13_HUMAN
<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: Q9NX77
Secondary accession number(s): A8K9G3
<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: May 24, 2004
Last sequence update: May 24, 2004
Last modified: May 25, 2022
This is version 99 of the entry and version 2 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 programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

<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

ERV, Reference proteome, Transposable element

Documents

  1. Human chromosome 16
    Human chromosome 16: entries, gene names and cross-references to MIM
  2. SIMILARITY comments
    Index of protein domains and families
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