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Protein

Hepatitis A virus cellular receptor 2

Gene

HAVCR2

Organism
Homo sapiens (Human)
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

Cell surface receptor implicated in modulating innate and adaptive immune responses. Generally accepted to have an inhibiting function. Reports on stimulating functions suggest that the activity may be influenced by the cellular context and/or the respective ligand (PubMed:24825777). Regulates macrophage activation (PubMed:11823861). Inhibits T-helper type 1 lymphocyte (Th1)-mediated auto- and alloimmune responses and promotes immunological tolerance (PubMed:14556005). In CD8+ cells attenuates TCR-induced signaling, specifically by blocking NF-kappaB and NFAT promoter activities resulting in the loss of IL-2 secretion. The function may implicate its association with LCK proposed to impair phosphorylation of TCR subunits, and/or LGALS9-dependent recruitment of PTPRC to the immunological synapse (PubMed:24337741, PubMed:26492563). In contrast, shown to activate TCR-induced signaling in T-cells probably implicating ZAP70, LCP2, LCK and FYN (By similarity). Expressed on Treg cells can inhibit Th17 cell responses (PubMed:24838857). Receptor for LGALS9 (PubMed:16286920, PubMed:24337741). Binding to LGALS9 is believed to result in suppression of T-cell responses; the resulting apoptosis of antigen-specific cells may implicate HAVCR2 phosphorylation and disruption of its association with BAG6. Binding to LGALS9 is proposed to be involved in innate immune response to intracellular pathogens. Expressed on Th1 cells interacts with LGALS9 expressed on Mycobacterium tuberculosis-infected macrophages to stimulate antibactericidal activity including IL-1 beta secretion and to restrict intracellular bacterial growth (By similarity). However, the function as receptor for LGALS9 has been challenged (PubMed:23555261). Also reported to enhance CD8+ T-cell responses to an acute infection such as by Listeria monocytogenes (By similarity). Receptor for phosphatidylserine (PtSer); PtSer-binding is calcium-dependent. May recognize PtSer on apoptotic cells leading to their phagocytosis. Mediates the engulfment of apoptotic cells by dendritic cells. Expressed on T-cells, promotes conjugation but not engulfment of apoptotic cells. Expressed on dendritic cells (DCs) positively regulates innate immune response and in synergy with Toll-like receptors promotes secretion of TNF-alpha. In tumor-imfiltrating DCs suppresses nucleic acid-mediated innate immune repsonse by interaction with HMGB1 and interfering with nucleic acid-sensing and trafficking of nucleid acids to endosomes (By similarity). Expressed on natural killer (NK) cells acts as a coreceptor to enhance IFN-gamma production in response to LGALS9 (PubMed:22323453). In contrast, shown to suppress NK cell-mediated cytotoxicity (PubMed:22383801). Negatively regulates NK cell function in LPS-induced endotoxic shock (By similarity).By similarity1 Publication7 Publications

Caution

Experimental results based on the injection of HAVCR2/TIM-3 antibodies or use of HAVCR2/TIM-3-Fc fusion proteins can reflect changes in the activity of several cell types and pathways as HAVCR2/TIM-3 is expressed by multiple immune cell types.1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Function’ 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 sitei111PhosphatidylserineBy similarity1
<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 bindingi116Calcium; via carbonyl oxygenBy similarity1
Binding sitei118Phosphatidylserine; via amide nitrogenBy similarity1
Metal bindingi119CalciumBy 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

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

Biological processAdaptive immunity, Immunity, Inflammatory response, Innate immunity
LigandMetal-binding

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-HSA-451927 Interleukin-2 family signaling

<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:
Hepatitis A virus cellular receptor 2
Short name:
HAVcr-2
Alternative name(s):
T-cell immunoglobulin and mucin domain-containing protein 3
Short name:
TIMD-3
T-cell immunoglobulin mucin receptor 3
Short name:
TIM-3
T-cell membrane protein 3
CD_antigen: CD366
<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
Name:HAVCR2
Synonyms:TIM3, TIMD3
<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>OrganismiHomo sapiens (Human)
<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 identifieri9606 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
<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
  • UP000005640 <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: Chromosome 5

Organism-specific databases

Eukaryotic Pathogen Database Resources

More...
EuPathDBi
HostDB:ENSG00000135077.8

Human Gene Nomenclature Database

More...
HGNCi
HGNC:18437 HAVCR2

Online Mendelian Inheritance in Man (OMIM)

More...
MIMi
606652 gene

neXtProt; the human protein knowledge platform

More...
neXtProti
NX_Q8TDQ0

<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

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

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 subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini22 – 202ExtracellularSequence analysisAdd BLAST181
<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>Transmembranei203 – 223HelicalSequence analysisAdd BLAST21
Topological domaini224 – 301CytoplasmicSequence analysisAdd BLAST78

Keywords - Cellular componenti

Cell junction, Membrane

<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

<p>This subsection of the ‘Pathology and Biotech’ section provides information on the disease(s) associated with genetic variations in a given protein. The information is extracted from the scientific literature and diseases that are also described in the <a href="http://www.ncbi.nlm.nih.gov/sites/entrez?db=omim">OMIM</a> database are represented with a <a href="http://www.uniprot.org/diseases">controlled vocabulary</a> in the following way:<p><a href='/help/involvement_in_disease' target='_top'>More...</a></p>Involvement in diseasei

May be involved in T-cell exhaustion associated with chronic viral infections such as with human immunodeficiency virus (HIV) and hepatitic C virus (HCV).2 Publications

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi265Y → A: Abolishes TCR-induced NFAT activation; when associated with A-272. 1 Publication1
Mutagenesisi265Y → E: No effect on TCR-induced NFAT activation (phosphomimetic mutation); when associated with E-272. 1 Publication1
Mutagenesisi272Y → A: Abolishes TCR-induced NFAT activation; when associated with A-265. 1 Publication1
Mutagenesisi272Y → E: No effect on TCR-induced NFAT activation (phosphomimetic mutation); when associated with E-265. 1 Publication1

Organism-specific databases

DisGeNET

More...
DisGeNETi
84868

Open Targets

More...
OpenTargetsi
ENSG00000135077

The Pharmacogenetics and Pharmacogenomics Knowledge Base

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PharmGKBi
PA134883425

Polymorphism and mutation databases

BioMuta curated single-nucleotide variation and disease association database

More...
BioMutai
HAVCR2

Domain mapping of disease mutations (DMDM)

More...
DMDMi
311033536

<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 denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 21Sequence analysisAdd BLAST21
<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_000004210122 – 301Hepatitis A virus cellular receptor 2Add BLAST280

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi38 ↔ 110PROSITE-ProRule annotationBy similarity
Disulfide bondi52 ↔ 63PROSITE-ProRule annotationBy similarity
Disulfide bondi58 ↔ 109PROSITE-ProRule annotationBy similarity
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi145O-linked (GalNAc...) threonine1 Publication1
Glycosylationi172N-linked (GlcNAc...) asparagineSequence analysis1
<p>This subsection of the ‘PTM / Processing’ section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei265Phosphotyrosine; by ITK1 Publication1

<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

O-glycosylated with core 1 or possibly core 8 glycans.1 Publication
Phosphorylated on tyrosine residues; modestly increased after TCR/CD28 stimulation. Can be phosphorylated in the cytoplasmatic domain by FYN (By similarity). Phosphorylation at Tyr-265 is increased by stimulation with ligand LGALS9.By similarity2 Publications

Keywords - PTMi

Disulfide bond, Glycoprotein, Phosphoprotein

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...
jPOSTi
Q8TDQ0

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
Q8TDQ0

PeptideAtlas

More...
PeptideAtlasi
Q8TDQ0

PRoteomics IDEntifications database

More...
PRIDEi
Q8TDQ0

ProteomicsDB human proteome resource

More...
ProteomicsDBi
74319
74320 [Q8TDQ0-2]

PTM databases

GlyConnect protein glycosylation platform

More...
GlyConnecti
712

iPTMnet integrated resource for PTMs in systems biology context

More...
iPTMneti
Q8TDQ0

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...
PhosphoSitePlusi
Q8TDQ0

UniCarbKB; an annotated and curated database of glycan structures

More...
UniCarbKBi
Q8TDQ0

<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

Expressed in T-helper type 1 (Th1) lymphocytes. Expressed on regulatory T (Treg) cells after TCR stimulation. Expressed in dendritic cells and natural killer (NK) cells. Expressed in epithelial tissues. Expression is increased on CD4+ and CD8+ T-cells in chronic hepatitis C virus (HCV) infection. In progressive HIV-1 infection, expression is up-regulated on HIV-1-specific CD8 T-cells.8 Publications

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSG00000135077 Expressed in 157 organ(s), highest expression level in layer of synovial tissue

CleanEx database of gene expression profiles

More...
CleanExi
HS_HAVCR2

ExpressionAtlas, Differential and Baseline Expression

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ExpressionAtlasi
Q8TDQ0 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q8TDQ0 HS

Organism-specific databases

Human Protein Atlas

More...
HPAi
CAB026003

<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

Interacts with HMGB1; impairs HMGB1 binding to B-DNA and likely HMGB1-mediated innate immume response (By similarity). Interacts with BAG6 (By similarity). Interacts (phosphorylated) with PIK3R1 and PIK3R2. Interacts (not dependent on its phosphorylation status) with FYN (By similarity). Interacts (in basal state T-cells) with VAV1; AKT1/2, LCP2, ZAP70, SYK, PIK3R1, FYN, SH3BP2 and SH2D2A. Interacts (in activated T-cells) with LCK and PLCG (PubMed:26492563, PubMed:24337741).By similarity2 Publications

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">Interaction</a> section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

WithEntry#Exp.IntActNotes
CEACAM1P136884EBI-11472922,EBI-4314481

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
124313, 72 interactors

Database of interacting proteins

More...
DIPi
DIP-61459N

Protein interaction database and analysis system

More...
IntActi
Q8TDQ0, 14 interactors

STRING: functional protein association networks

More...
STRINGi
9606.ENSP00000312002

<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

1301
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Select the link destinations:

Protein Data Bank Europe

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PDBei

Protein Data Bank RCSB

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RCSB PDBi

Protein Data Bank Japan

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PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
5DZLX-ray3.40A/B22-126[»]
5F71X-ray2.40A/B22-130[»]

Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

More...
ProteinModelPortali
Q8TDQ0

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

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SMRi
Q8TDQ0

Database of comparative protein structure models

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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>Domaini22 – 124Ig-like V-typeAdd BLAST103

<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 immunoglobulin superfamily. TIM family.Curated

Keywords - Domaini

Immunoglobulin domain, Signal, Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG410IJGA Eukaryota
ENOG410YSF7 LUCA

Ensembl GeneTree

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GeneTreei
ENSGT00940000154444

The HOVERGEN Database of Homologous Vertebrate Genes

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HOVERGENi
HBG098563

InParanoid: Eukaryotic Ortholog Groups

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InParanoidi
Q8TDQ0

KEGG Orthology (KO)

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KOi
K20414

Identification of Orthologs from Complete Genome Data

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OMAi
TATFPRM

Database of Orthologous Groups

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OrthoDBi
1147868at2759

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q8TDQ0

TreeFam database of animal gene trees

More...
TreeFami
TF336163

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.60.40.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR007110 Ig-like_dom
IPR036179 Ig-like_dom_sf
IPR013783 Ig-like_fold
IPR003599 Ig_sub
IPR013106 Ig_V-set

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF07686 V-set, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

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SMARTi
View protein in SMART
SM00409 IG, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF48726 SSF48726, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS50835 IG_LIKE, 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 alternative splicing. AlignAdd to basket

This entry has 2 described isoforms and 2 potential isoforms that are computationally mapped.Show allAlign All

Isoform 1 (identifier: Q8TDQ0-1) [UniParc]FASTAAdd to basket

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
MFSHLPFDCV LLLLLLLLTR SSEVEYRAEV GQNAYLPCFY TPAAPGNLVP
60 70 80 90 100
VCWGKGACPV FECGNVVLRT DERDVNYWTS RYWLNGDFRK GDVSLTIENV
110 120 130 140 150
TLADSGIYCC RIQIPGIMND EKFNLKLVIK PAKVTPAPTR QRDFTAAFPR
160 170 180 190 200
MLTTRGHGPA ETQTLGSLPD INLTQISTLA NELRDSRLAN DLRDSGATIR
210 220 230 240 250
IGIYIGAGIC AGLALALIFG ALIFKWYSHS KEKIQNLSLI SLANLPPSGL
260 270 280 290 300
ANAVAEGIRS EENIYTIEEN VYEVEEPNEY YCYVSSRQQP SQPLGCRFAM

P
Length:301
Mass (Da):33,394
Last modified:November 2, 2010 - v3
<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:i519A5B0D512B6173
GO
Isoform 2 (identifier: Q8TDQ0-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     132-142: AKVTPAPTRQR → GEWTFACHLYE
     143-301: Missing.

Show »
Length:142
Mass (Da):16,149
Checksum:iE2C82D8B5AABC23E
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There are 2 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
E5RHN3E5RHN3_HUMAN
Hepatitis A virus cellular receptor...
HAVCR2
273Annotation score:

Annotation score:1 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>
E5RFR4E5RFR4_HUMAN
Hepatitis A virus cellular receptor...
HAVCR2
74Annotation score:

Annotation score:1 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 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 conflicti101T → I in AAM19100 (Ref. 2) Curated1

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes natural variant(s) of the protein sequence.<p><a href='/help/variant' target='_top'>More...</a></p>Natural variantiVAR_025342140R → L6 PublicationsCorresponds to variant dbSNP:rs1036199Ensembl.1

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section describes the sequence of naturally occurring alternative protein isoform(s). The changes in the amino acid sequence may be due to alternative splicing, alternative promoter usage, alternative initiation, or ribosomal frameshifting. The information stored in this subsection is used to automatically construct alternative protein sequence(s) for display.<p><a href='/help/var_seq' target='_top'>More...</a></p>Alternative sequenceiVSP_017287132 – 142AKVTPAPTRQR → GEWTFACHLYE in isoform 2. 1 PublicationAdd BLAST11
Alternative sequenceiVSP_017288143 – 301Missing in isoform 2. 1 PublicationAdd BLAST159

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
AF251707 mRNA Translation: AAM19100.1
AY069944 mRNA Translation: AAL55401.1
AK027334 mRNA Translation: BAB55044.1
AK314406 mRNA Translation: BAG37029.1
AC011377 Genomic DNA No translation available.
CH471062 Genomic DNA Translation: EAW61614.1
BC020843 mRNA Translation: AAH20843.1
BC063431 mRNA Translation: AAH63431.1

The Consensus CDS (CCDS) project

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CCDSi
CCDS4333.1 [Q8TDQ0-1]

NCBI Reference Sequences

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RefSeqi
NP_116171.3, NM_032782.4 [Q8TDQ0-1]

UniGene gene-oriented nucleotide sequence clusters

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UniGenei
Hs.710500

Genome annotation databases

Ensembl eukaryotic genome annotation project

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Ensembli
ENST00000307851; ENSP00000312002; ENSG00000135077 [Q8TDQ0-1]

Database of genes from NCBI RefSeq genomes

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GeneIDi
84868

KEGG: Kyoto Encyclopedia of Genes and Genomes

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KEGGi
hsa:84868

UCSC genome browser

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UCSCi
uc003lwk.3 human [Q8TDQ0-1]

Keywords - Coding sequence diversityi

Alternative splicing, Polymorphism

<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
AF251707 mRNA Translation: AAM19100.1
AY069944 mRNA Translation: AAL55401.1
AK027334 mRNA Translation: BAB55044.1
AK314406 mRNA Translation: BAG37029.1
AC011377 Genomic DNA No translation available.
CH471062 Genomic DNA Translation: EAW61614.1
BC020843 mRNA Translation: AAH20843.1
BC063431 mRNA Translation: AAH63431.1
CCDSiCCDS4333.1 [Q8TDQ0-1]
RefSeqiNP_116171.3, NM_032782.4 [Q8TDQ0-1]
UniGeneiHs.710500

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
5DZLX-ray3.40A/B22-126[»]
5F71X-ray2.40A/B22-130[»]
ProteinModelPortaliQ8TDQ0
SMRiQ8TDQ0
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi124313, 72 interactors
DIPiDIP-61459N
IntActiQ8TDQ0, 14 interactors
STRINGi9606.ENSP00000312002

PTM databases

GlyConnecti712
iPTMnetiQ8TDQ0
PhosphoSitePlusiQ8TDQ0
UniCarbKBiQ8TDQ0

Polymorphism and mutation databases

BioMutaiHAVCR2
DMDMi311033536

Proteomic databases

jPOSTiQ8TDQ0
PaxDbiQ8TDQ0
PeptideAtlasiQ8TDQ0
PRIDEiQ8TDQ0
ProteomicsDBi74319
74320 [Q8TDQ0-2]

Protocols and materials databases

The DNASU plasmid repository

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DNASUi
84868
Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000307851; ENSP00000312002; ENSG00000135077 [Q8TDQ0-1]
GeneIDi84868
KEGGihsa:84868
UCSCiuc003lwk.3 human [Q8TDQ0-1]

Organism-specific databases

Comparative Toxicogenomics Database

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CTDi
84868
DisGeNETi84868
EuPathDBiHostDB:ENSG00000135077.8

GeneCards: human genes, protein and diseases

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GeneCardsi
HAVCR2

H-Invitational Database, human transcriptome db

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H-InvDBi
HIX0005353
HGNCiHGNC:18437 HAVCR2
HPAiCAB026003
MIMi606652 gene
neXtProtiNX_Q8TDQ0
OpenTargetsiENSG00000135077
PharmGKBiPA134883425

GenAtlas: human gene database

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GenAtlasi
Search...

Phylogenomic databases

eggNOGiENOG410IJGA Eukaryota
ENOG410YSF7 LUCA
GeneTreeiENSGT00940000154444
HOVERGENiHBG098563
InParanoidiQ8TDQ0
KOiK20414
OMAiTATFPRM
OrthoDBi1147868at2759
PhylomeDBiQ8TDQ0
TreeFamiTF336163

Enzyme and pathway databases

ReactomeiR-HSA-451927 Interleukin-2 family signaling

Miscellaneous databases

ChiTaRS: a database of human, mouse and fruit fly chimeric transcripts and RNA-sequencing data

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ChiTaRSi
HAVCR2 human

The Gene Wiki collection of pages on human genes and proteins

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GeneWikii
HAVCR2

Database of phenotypes from RNA interference screens in Drosophila and Homo sapiens

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GenomeRNAii
84868

Protein Ontology

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PROi
PR:Q8TDQ0

The Stanford Online Universal Resource for Clones and ESTs

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SOURCEi
Search...

Gene expression databases

BgeeiENSG00000135077 Expressed in 157 organ(s), highest expression level in layer of synovial tissue
CleanExiHS_HAVCR2
ExpressionAtlasiQ8TDQ0 baseline and differential
GenevisibleiQ8TDQ0 HS

Family and domain databases

Gene3Di2.60.40.10, 1 hit
InterProiView protein in InterPro
IPR007110 Ig-like_dom
IPR036179 Ig-like_dom_sf
IPR013783 Ig-like_fold
IPR003599 Ig_sub
IPR013106 Ig_V-set
PfamiView protein in Pfam
PF07686 V-set, 1 hit
SMARTiView protein in SMART
SM00409 IG, 1 hit
SUPFAMiSSF48726 SSF48726, 1 hit
PROSITEiView protein in PROSITE
PS50835 IG_LIKE, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

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ProtoNeti
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<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 nameiHAVR2_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: Q8TDQ0
Secondary accession number(s): B2RAY2, Q8WW60, Q96K94
<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: September 27, 2005
Last sequence update: November 2, 2010
Last modified: January 16, 2019
This is version 138 of the entry and version 3 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

3D-structure, Complete proteome, Reference proteome

Documents

  1. Human cell differentiation molecules
    CD nomenclature of surface proteins of human leucocytes and list of entries
  2. SIMILARITY comments
    Index of protein domains and families
  3. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  4. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  5. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  6. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  7. Human chromosome 5
    Human chromosome 5: entries, gene names and cross-references to MIM
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