The following gene names and symbols are associated with antigen CD81 across different species:

CD81 molecule (CD81)

Other aliases include:

S5.7, TAPA1, TSPAN28

On the protein level the following designations are being used for antigen CD81:

CD81 antigen – 26 kDa cell surface protein TAPA-1 – target of antiproliferative antibody 1 – CD81 antigen (target of antiproliferative antibody 1)

CD81 fulfills a number of functions:

protein binding

CD81 is relevant to the following processes:

activation of MAPK activity – entry of virus into host cell – interspecies interaction between organisms – phosphatidylinositol biosynthetic process – phosphoinositide metabolic process – positive regulation of 1-phosphatidylinositol 4-kinase activity – positive regulation of cell proliferation – positive regulation of peptidyl-tyrosine phosphorylation – protein localization – virion attachment, binding of host cell surface receptor

Locations for CD81:

cytoplasm – integral to plasma membrane – plasma membrane

Source: NCBI Entrez Gene, Gene Ontology