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CD81
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  • CD81
PROTEIN STRUCTURE
ANTIBODIES
AND
VALIDATION
Protein structures
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

CD81
Synonyms TAPA-1, TAPA1, TSPAN28
Gene descriptioni

Full gene name according to HGNC.

CD81 molecule
Protein classi

Assigned HPA protein class(es) for the encoded protein(s).

Read more
CD markers
Disease related genes
Human disease related genes
Plasma proteins
Potential drug targets
Transporters
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Read more
Membrane
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 11
Cytoband p15.5
Chromosome location (bp) 2376177 - 2397397
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

12
Ensembl ENSG00000110651 (version 103.38)
Entrez gene 975
HGNC HGNC:1701
UniProt P60033 (UniProt - Evidence at protein level)
neXtProt NX_P60033
Antibodypedia CD81 antibodies


PROTEIN STRUCTUREi

The Structure section provides predicted structures from the Alphafold protein structure database and available experimental structures from Protein Data Bank (PDB).

In the Structure drop-down menu all experimental structures from PDB are available for selection and display. The structures are displayed using the NGL Viewer and can be zoomed-in and rotated either manually or by checking the Autorotate box. The Color scheme can be selected to show the residue index, chain name or confidence score (as B-factors and pLDDT score for experimental and predicted structures, respectively). The positions for available antigen sequences in the structure are shown if Antigens is turned to ON, and the Variants slider can be used to show the positions of clinical and population variants.https://github.com/nglviewer/ngl

Read more

Predicted


Description: Structure prediction from Alphafold project. Structure version 2

# Chains: 1      # Clinical variants: 0      # Population variants: 127

Antigens:

Off
On

Variants:

Off
Clinical
Population

Color scheme:

Confidence
Residue index
Chain name

Autorotate:

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On



PROTEIN BROWSERi

The protein browser displays the antigen location on the target protein(s) and the features of the target protein. The tabs at the top of the protein view section can be used to switch between the different splice variants to which an antigen has been mapped.

At the top of the view, the position of the antigen (identified by the corresponding HPA identifier) is shown as a green bar. A yellow triangle on the bar indicates a <100% sequence identity to the protein target.

Below the antigens, the maximum percent sequence identity of the protein to all other proteins from other human genes is displayed, using a sliding window of 10 aa residues (HsID 10) or 50 aa residues (HsID 50). The region with the lowest possible identity is always selected for antigen design, with a maximum identity of 60% allowed for designing a single-target antigen (read more).

The curve in blue displays the predicted antigenicity i.e. the tendency for different regions of the protein to generate an immune response, with peak regions being predicted to be more antigenic.The curve shows average values based on a sliding window approach using an in-house propensity scale. (read more).

If a signal peptide is predicted by a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius (turquoise) and/or transmembrane regions (orange) are predicted by MDM, these are displayed.

Low complexity regions are shown in yellow and InterPro regions in green. Common (purple) and unique (grey) regions between different splice variants of the gene are also displayed (read more), and at the bottom of the protein view is the protein scale.
«
CD81-201
CD81-202
CD81-203
CD81-205
CD81-207
CD81-208
CD81-209
CD81-210
CD81-212
CD81-213
CD81-215
CD81-217
»


PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The ENSP identifier links to the Ensembl website protein summary, while the ENST identifier links to the Ensembl website transcript summary for the selected splice variant. The data in the UniProt column can be expanded to show links to all matching UniProt identifiers for this protein.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The Gene Ontology terms assigned to this protein are listed if expanding the Gene ontology column. The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide (according to a majority of the signal peptide predictors SPOCTOPUS, SignalP 4.0, and Phobius) and the number of predicted transmembrane region(s) (according to MDM) are also reported.
Splice variant UniProt Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
CD81-201
ENSP00000263645
ENST00000263645
P60033 [Direct mapping]
CD81 antigen
A0A024RCB7 [Target identity:100%; Query identity:100%]
Tetraspanin
Show all
CD markers
Transporters
   Accessory Factors Involved in Transport
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Plasma proteins
Disease related genes
Potential drug targets
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Kim et al 2014)
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000187 [activation of MAPK activity]
GO:0001618 [virus receptor activity]
GO:0001771 [immunological synapse formation]
GO:0001772 [immunological synapse]
GO:0002250 [adaptive immune response]
GO:0002376 [immune system process]
GO:0002455 [humoral immune response mediated by circulating immunoglobulin]
GO:0002863 [positive regulation of inflammatory response to antigenic stimulus]
GO:0005178 [integrin binding]
GO:0005515 [protein binding]
GO:0005886 [plasma membrane]
GO:0005887 [integral component of plasma membrane]
GO:0005925 [focal adhesion]
GO:0008104 [protein localization]
GO:0008284 [positive regulation of cell population proliferation]
GO:0008289 [lipid binding]
GO:0009925 [basal plasma membrane]
GO:0014905 [myoblast fusion involved in skeletal muscle regeneration]
GO:0015485 [cholesterol binding]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0016032 [viral process]
GO:0016323 [basolateral plasma membrane]
GO:0023026 [MHC class II protein complex binding]
GO:0030449 [regulation of complement activation]
GO:0030890 [positive regulation of B cell proliferation]
GO:0031623 [receptor internalization]
GO:0031647 [regulation of protein stability]
GO:0031982 [vesicle]
GO:0034238 [macrophage fusion]
GO:0035783 [CD4-positive, alpha-beta T cell costimulation]
GO:0042289 [MHC class II protein binding]
GO:0043128 [positive regulation of 1-phosphatidylinositol 4-kinase activity]
GO:0045944 [positive regulation of transcription by RNA polymerase II]
GO:0046718 [viral entry into host cell]
GO:0046813 [receptor-mediated virion attachment to host cell]
GO:0050731 [positive regulation of peptidyl-tyrosine phosphorylation]
GO:0050776 [regulation of immune response]
GO:0050861 [positive regulation of B cell receptor signaling pathway]
GO:0050862 [positive regulation of T cell receptor signaling pathway]
GO:0061462 [protein localization to lysosome]
GO:0070062 [extracellular exosome]
GO:0070863 [positive regulation of protein exit from endoplasmic reticulum]
GO:0071404 [cellular response to low-density lipoprotein particle stimulus]
GO:0072659 [protein localization to plasma membrane]
GO:0072675 [osteoclast fusion]
GO:0097197 [tetraspanin-enriched microdomain]
GO:1903911 [positive regulation of receptor clustering]
GO:1904352 [positive regulation of protein catabolic process in the vacuole]
GO:1905521 [regulation of macrophage migration]
GO:1905676 [positive regulation of adaptive immune memory response]
GO:1990459 [transferrin receptor binding]
GO:2000553 [positive regulation of T-helper 2 cell cytokine production]
GO:2000563 [positive regulation of CD4-positive, alpha-beta T cell proliferation]
GO:2001190 [positive regulation of T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell]
Show all
236 aa
25.8 kDa
No 4
CD81-202
ENSP00000370424
ENST00000381036
A6NMH8 [Direct mapping]
Tetraspanin
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0002863 [positive regulation of inflammatory response to antigenic stimulus]
GO:0014905 [myoblast fusion involved in skeletal muscle regeneration]
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
GO:0031623 [receptor internalization]
GO:0034238 [macrophage fusion]
GO:0050861 [positive regulation of B cell receptor signaling pathway]
GO:0050871 [positive regulation of B cell activation]
GO:0071404 [cellular response to low-density lipoprotein particle stimulus]
GO:0072675 [osteoclast fusion]
GO:1903911 [positive regulation of receptor clustering]
GO:1905521 [regulation of macrophage migration]
GO:2000145 [regulation of cell motility]
GO:2000553 [positive regulation of T-helper 2 cell cytokine production]
GO:2001190 [positive regulation of T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell]
Show all
274 aa
29.8 kDa
Yes 4
CD81-203
ENSP00000433904
ENST00000464784
H0YDL9 [Direct mapping]
Tetraspanin
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
221 aa
23.7 kDa
No 4
CD81-205
ENSP00000433178
ENST00000475945
E9PM31 [Direct mapping]
CD81 antigen
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   1TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
92 aa
10 kDa
No 1
CD81-207
ENSP00000432033
ENST00000481687
E9PIF1 [Direct mapping]
Tetraspanin
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   3TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
242 aa
25.9 kDa
No 3
CD81-208
ENSP00000432249
ENST00000492252
E9PRJ8 [Direct mapping]
Tetraspanin
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
209 aa
22.5 kDa
No 4
CD81-209
ENSP00000437242
ENST00000492627
E9PJK1 [Direct mapping]
Tetraspanin
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   2TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
165 aa
18 kDa
No 2
CD81-210
ENSP00000432497
ENST00000493525
E9PQV4 [Direct mapping]
CD81 antigen
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   3TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
99 aa
10.7 kDa
No 3
CD81-212
ENSP00000431780
ENST00000526072
E9PJK1 [Direct mapping]
Tetraspanin
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   2TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
165 aa
18 kDa
No 2
CD81-213
ENSP00000433767
ENST00000527343
H0YDJ9 [Direct mapping]
Tetraspanin
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   4TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
225 aa
24.4 kDa
No 4
CD81-215
ENSP00000432723
ENST00000530648
E9PPF5 [Direct mapping]
CD81 antigen
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   1TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
51 aa
5.6 kDa
No 1
CD81-217
ENSP00000435633
ENST00000533417
H0YEE2 [Direct mapping]
Tetraspanin
Show all
Predicted membrane proteins
   Prediction method-based
   Membrane proteins predicted by MDM
   MEMSAT3 predicted membrane proteins
   MEMSAT-SVM predicted membrane proteins
   Phobius predicted membrane proteins
   SCAMPI predicted membrane proteins
   SPOCTOPUS predicted membrane proteins
   THUMBUP predicted membrane proteins
   TMHMM predicted membrane proteins
   # TM segments-based
   3TM proteins predicted by MDM
Human disease related genes
   Immune system diseases
   Primary immunodeficiency
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0016020 [membrane]
GO:0016021 [integral component of membrane]
Show all
148 aa
16 kDa
No 3

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The Human Protein Atlas project is funded
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