Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
The new UniProt website is here! Take me to UniProt BETA

UniProtKB - P35762 (CD81_MOUSE)

Entry version 163 (25 May 2022)
Sequence version 2 (03 Oct 2012)
Previous versions | rss
Add a publicationFeedback
Protein

CD81 antigen

Gene

Cd81

Organism
Mus musculus (Mouse)
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

Structural component of specialized membrane microdomains known as tetraspanin-enriched microdomains (TERMs), which act as platforms for receptor clustering and signaling. Essential for trafficking and compartmentalization of CD19 receptor on the cell surface of activated B cells (PubMed:23499492).

Upon initial encounter with a microbial pathogen, enables the assembly of CD19-CR2 and B cell receptor complexes at signaling TERMs, lowering the threshold dose of antigen required to trigger B cell clonal expansion and humoral immune response (By similarity).

In T cells, associates with CD4 or CD8 coreceptors and defines the maturation state of antigen-induced synapses with B cells (By similarity).

Facilitates localization of CD3 in these immune synapses, required for costimulation and sustained activation of T cells, preferentially triggering T helper type 2 immune response (PubMed:11046035).

Can act both as positive and negative regulator of homotypic or heterotypic cell-cell fusion processes. In myoblasts, associates with another tetraspanin CD9 in complex with PTGFRN and inhibits myotube fusion during muscle regeneration (PubMed:23575678).

In macrophages, associates with CD9 and beta-1 and beta-2 integrins, and prevents macrophage fusion into multinucleated giant cells specialized in ingesting complement-opsonized large particles. Also prevents the fusion between mononuclear cell progenitors into osteoclasts in charge of bone resorption. Positively regulates sperm-egg fusion and may be involved in the acrosome reaction (PubMed:16380109, PubMed:17290409).

Regulates protein trafficking in intracellular compartments. In T cells, associates with dNTPase SAMHD1 and defines its subcellular location, enabling its degradation by the proteasome and thereby controlling intracellular dNTP levels (By similarity).

Also regulates integrin-dependent migration of macrophages, particularly relevant for inflammatory response in the lung (PubMed:18662991).

By similarity6 Publications

(Microbial infection) Specifically required for Plasmodium yoelii infectivity of hepatocytes, controlling sporozoite entry in hepatocytes via the parasitophorous vacuole and subsequent parasite differentiation to exoerythrocytic forms.

1 Publication

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>Sitei116Important for interaction with integrinBy similarity1
Sitei144Important for interaction with integrinBy similarity1
Sitei148Important for interaction with integrinBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">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 sitei219CholesterolBy 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

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<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
LigandLipid-binding

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...Reactomei		R-MMU-198933, Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell
R-MMU-977606, Regulation of Complement cascade

<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:
CD81 antigen
Alternative name(s):
26 kDa cell surface protein TAPA-1
Target of the antiproliferative antibody 11 Publication
CD_antigen: CD81
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:Cd811 PublicationImported
Synonyms:Tapa1
<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>OrganismiMus musculus (Mouse)
<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 identifieri10090 [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 lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Mus › Mus
<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
  • UP000000589 <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: Chromosome 7

Organism-specific databases

Mouse genome database (MGD) from Mouse Genome Informatics (MGI)

More...MGIi		MGI:1096398, Cd81

Eukaryotic Pathogen, Vector and Host Database Resources

More...VEuPathDBi		HostDB:ENSMUSG00000037706

<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 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 domaini1 – 12CytoplasmicCuratedAdd BLAST12
<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>Transmembranei13 – 33HelicalBy similarityAdd BLAST21
Topological domaini34 – 63ExtracellularCuratedAdd BLAST30
Transmembranei64 – 84HelicalBy similarityAdd BLAST21
Topological domaini85 – 89CytoplasmicCurated5
Transmembranei90 – 112HelicalBy similarityAdd BLAST23
Topological domaini113 – 201ExtracellularCuratedAdd BLAST89
Transmembranei202 – 224HelicalBy similarityAdd BLAST23
Topological domaini225 – 236CytoplasmicCuratedAdd BLAST12

Keywords - Cellular componenti

Cell membrane, 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 describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

Knockout mice exhibit reduced female fertitily and impaired egg-sperm fusion (PubMed:16380109, PubMed:17290409). In response to notexin-induced acute myoinjury, mutant mice display abnormal muscle regeneration characterized by typical giant distrophic myofibres (PubMed:23575678). Mutant mice show reduced allergen-induced lung inflammation, eosinophilia and mucin production (PubMed:11046035). These mice spontaneously develop multinucleated giant cells (MGCs) and show enhanced osteoclastogenesis when compared to wild-type littermates (PubMed:12796480). CD81 and CD9 double knockout mice develop pulmonary emphysema, reminiscent of chronic obstructive pulmonary disease in human (PubMed:18662991).6 Publications
(Microbial infection) Mutant mice are refractory to Plasmodium yoelii sporozoite infection.1 Publication

<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_00002192221 – 236CD81 antigenAdd BLAST236

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 bondi156 ↔ 190Combined sources1 Publication
Disulfide bondi157 ↔ 175Combined sources1 Publication

<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

Not glycosylated.Curated
Likely constitutively palmitoylated at low levels. Protein palmitoylation is up-regulated upon coligation of BCR and CD9-C2R-CD81 complexes in lipid rafts.By similarity

Keywords - PTMi

Disulfide bond

Proteomic databases

Encyclopedia of Proteome Dynamics

More...EPDi		P35762

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P35762

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

More...PaxDbi		P35762

PeptideAtlas

More...PeptideAtlasi		P35762

PRoteomics IDEntifications database

More...PRIDEi		P35762

ProteomicsDB: a multi-organism proteome resource

More...ProteomicsDBi		265630

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...iPTMneti		P35762

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

More...PhosphoSitePlusi		P35762

SwissPalm database of S-palmitoylation events

More...SwissPalmi		P35762

<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 oocytes (at protein level) (PubMed:16380109, PubMed:17290409, PubMed:23213457). Highly expressed in granulosa cells (PubMed:16380109). Expressed in skeletal muscle mainly in endothelial cells of endomysial capillaries, in satellite cells and myoblasts (at protein level) (PubMed:23575678). Expressed in hepatocytes (at protein level) (PubMed:12483205).5 Publications

<p>This subsection of the 'Expression' section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Up-regulated in response to notexin-induced acute myoinjury.1 Publication

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...Bgeei		ENSMUSG00000037706, Expressed in ventral horn of spinal cord and 339 other tissues

Genevisible search portal to normalized and curated expression data from Genevestigator

More...Genevisiblei		P35762, MM

<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

Homodimer (By similarity).

Part of a complex composed of CD19, CR2/CD21, CD81 and IFITM1/CD225 in the membrane of mature B cells.

Interacts (via the second extracellular domain) with CD19; this interaction is initiated early during biosynthesis in the ER and enables trafficking of only properly folded CD19 (By similarity).

Part of a complex that includes MHC class II/HLA-DR molecules and IFITM1.

Interacts with IFITM1 (By similarity).

Interacts with IFITM2 and IFITM3 (PubMed:16395393). Part of integrin-tetraspanin complex composed of CD9, CD81, beta-1 and beta-2 integrins in the membrane of monocyte/macrophages (By similarity).

Interacts (via the second extracellular domain) with integrin ITGAV:ITGB3 (By similarity).

Interacts with CD247/CD3 zeta, ICAM1 and CD9 at the immune synapse on T cell membrane (By similarity).

Part of a GPCR-tetraspanin complex consisting at least of ADGRG1, CD81, possibly CD9, and GNA11 in which CD81 enhances the association of ADGRG1 with GNA11 (By similarity).

Part of a complex composed of CD9, CD81, PTGFRN and IGSF8 (PubMed:23575678).

Interacts directly with IGSF8 (PubMed:11673522).

Interacts with CD53 and SCIMP (By similarity).

Interacts with SAMHD1 (via its C-terminus) (By similarity).

Interacts with glypican GPC3 and with the transcriptional repressor HHEX; binding to GPC3 decreases the availability of free CD81 for binding to HHEX, resulting in nuclear translocation of HHEX and transcriptional repression (PubMed:23665349).

Interacts with CLDN1 (By similarity).

Interacts with CLDN6 and CLDN9 (By similarity).

By similarity4 Publications

GO - Molecular functioni

Complete GO annotation on QuickGO ...

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		198613, 20 interactors

Protein interaction database and analysis system

More...IntActi		P35762, 1 interactor

STRING: functional protein association networks

More...STRINGi		10090.ENSMUSP00000043768

Miscellaneous databases

RNAct, Protein-RNA interaction predictions for model organisms.

More...RNActi		P35762, 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

Secondary structure

1236
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

AlphaFold Protein Structure Database

More...AlphaFoldDBi		P35762

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

More...SMRi		P35762

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

<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

Binds cholesterol in a cavity lined by the transmembrane spans.By similarity

<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 tetraspanin (TM4SF) family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		KOG3882, Eukaryota

Ensembl GeneTree

More...GeneTreei		ENSGT00940000158805

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_055524_10_0_1

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P35762

Identification of Orthologs from Complete Genome Data

More...OMAi		HETLSCC

Database of Orthologous Groups

More...OrthoDBi		1205716at2759

Database for complete collections of gene phylogenies

More...PhylomeDBi		P35762

TreeFam database of animal gene trees

More...TreeFami		TF352895

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.1450.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR018499, Tetraspanin/Peripherin
IPR000301, Tetraspanin_animals
IPR018503, Tetraspanin_CS
IPR008952, Tetraspanin_EC2_sf

The PANTHER Classification System

More...PANTHERi		PTHR19282, PTHR19282, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00335, Tetraspanin, 1 hit

PIRSF; a whole-protein classification database

More...PIRSFi		PIRSF002419, Tetraspanin, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF48652, SSF48652, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00421, TM4_1, 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>Sequence (1+)i

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

This entry has 1 described isoform and 2 potential isoforms that are computationally mapped.Show allAlign All

P35762-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MGVEGCTKCI KYLLFVFNFV FWLAGGVILG VALWLRHDPQ TTSLLYLELG 
        60         70         80         90        100
NKPAPNTFYV GIYILIAVGA VMMFVGFLGC YGAIQESQCL LGTFFTCLVI 
       110        120        130        140        150
LFACEVAAGI WGFVNKDQIA KDVKQFYDQA LQQAVMDDDA NNAKAVVKTF 
       160        170        180        190        200
HETLNCCGSN ALTTLTTTIL RNSLCPSGGN ILTPLLQQDC HQKIDELFSG 
       210        220        230 
KLYLIGIAAI VVAVIMIFEM ILSMVLCCGI RNSSVY
Length:236
Mass (Da):25,815
Last modified:October 3, 2012 - 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:i7BDCB792E7F9FA4E
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
A0A140LJL0A0A140LJL0_MOUSE
CD81 antigen
Cd81
121Annotation 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>
A0A140LHT1A0A140LHT1_MOUSE
CD81 antigen
Cd81
68Annotation 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 conflicti173S → T in AAB19417 (PubMed:1650385).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
S45012 S45010 Genomic DNA Translation: AAB19417.1
AJ251835 Genomic DNA Translation: CAB94774.1
AK166521 mRNA Translation: BAE38825.1
AK170741 mRNA Translation: BAE41994.1
AC015800 Genomic DNA No translation available.
CH466531 Genomic DNA Translation: EDL18195.1
BC011433 mRNA Translation: AAH11433.1
X59047 mRNA No translation available.

The Consensus CDS (CCDS) project

More...CCDSi		CCDS22038.1

Protein sequence database of the Protein Information Resource

More...PIRi		A46472

NCBI Reference Sequences

More...RefSeqi		NP_598416.1, NM_133655.2

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...Ensembli		ENSMUST00000037941; ENSMUSP00000043768; ENSMUSG00000037706

Database of genes from NCBI RefSeq genomes

More...GeneIDi		12520

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		mmu:12520

UCSC genome browser

More...UCSCi		uc009kou.2, mouse

<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
S45012 S45010 Genomic DNA Translation: AAB19417.1
AJ251835 Genomic DNA Translation: CAB94774.1
AK166521 mRNA Translation: BAE38825.1
AK170741 mRNA Translation: BAE41994.1
AC015800 Genomic DNA No translation available.
CH466531 Genomic DNA Translation: EDL18195.1
BC011433 mRNA Translation: AAH11433.1
X59047 mRNA No translation available.
CCDSiCCDS22038.1
PIRiA46472
RefSeqiNP_598416.1, NM_133655.2

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
3X0FX-ray1.47A/B113-202[»]
AlphaFoldDBiP35762
SMRiP35762
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGRIDi198613, 20 interactors
IntActiP35762, 1 interactor
STRINGi10090.ENSMUSP00000043768

PTM databases

iPTMnetiP35762
PhosphoSitePlusiP35762
SwissPalmiP35762

Proteomic databases

EPDiP35762
jPOSTiP35762
PaxDbiP35762
PeptideAtlasiP35762
PRIDEiP35762
ProteomicsDBi265630

Protocols and materials databases

Antibodypedia a portal for validated antibodies

More...Antibodypediai		1570, 1313 antibodies from 46 providers

The DNASU plasmid repository

More...DNASUi		12520

Genome annotation databases

EnsembliENSMUST00000037941; ENSMUSP00000043768; ENSMUSG00000037706
GeneIDi12520
KEGGimmu:12520
UCSCiuc009kou.2, mouse

Organism-specific databases

Comparative Toxicogenomics Database

More...CTDi		975
MGIiMGI:1096398, Cd81
VEuPathDBiHostDB:ENSMUSG00000037706

Phylogenomic databases

eggNOGiKOG3882, Eukaryota
GeneTreeiENSGT00940000158805
HOGENOMiCLU_055524_10_0_1
InParanoidiP35762
OMAiHETLSCC
OrthoDBi1205716at2759
PhylomeDBiP35762
TreeFamiTF352895

Enzyme and pathway databases

ReactomeiR-MMU-198933, Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell
R-MMU-977606, Regulation of Complement cascade

Miscellaneous databases

BioGRID ORCS database of CRISPR phenotype screens

More...BioGRID-ORCSi		12520, 1 hit in 74 CRISPR screens

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

More...ChiTaRSi		Cd81, mouse

Protein Ontology

More...PROi		PR:P35762
RNActiP35762, protein

The Stanford Online Universal Resource for Clones and ESTs

More...SOURCEi		Search...

Gene expression databases

BgeeiENSMUSG00000037706, Expressed in ventral horn of spinal cord and 339 other tissues
GenevisibleiP35762, MM

Family and domain databases

Gene3Di1.10.1450.10, 1 hit
InterProiView protein in InterPro
IPR018499, Tetraspanin/Peripherin
IPR000301, Tetraspanin_animals
IPR018503, Tetraspanin_CS
IPR008952, Tetraspanin_EC2_sf
PANTHERiPTHR19282, PTHR19282, 1 hit
PfamiView protein in Pfam
PF00335, Tetraspanin, 1 hit
PIRSFiPIRSF002419, Tetraspanin, 1 hit
SUPFAMiSSF48652, SSF48652, 1 hit
PROSITEiView protein in PROSITE
PS00421, TM4_1, 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 nameiCD81_MOUSE
<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: P35762
Secondary accession number(s): Q91V78
<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: June 1, 1994
Last sequence update: October 3, 2012
Last modified: May 25, 2022
This is version 163 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

<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, Direct protein sequencing, Reference proteome

Documents

  1. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again