The following gene names and symbols are associated with antigen CD4 across different species:

CD4 molecule (CD4)

Other aliases include:

CD4mut

On the protein level the following designations are being used for antigen CD4:

CD4 antigen – CD4 receptor – CD4 antigen (p55)

CD4 fulfills a number of functions:

MHC class II protein binding – coreceptor activity – extracellular matrix structural constituent – glycoprotein binding – protein homodimerization activity – protein kinase binding – transmembrane receptor activity – zinc ion binding

CD4 is relevant to the following processes:

T cell selection – cell adhesion – conjugation with cellular fusion – cytokine production – immune response – initiation of viral infection – interspecies interaction between organisms – positive regulation of T cell activation – positive regulation of calcium-mediated signaling – positive regulation of interleukin-2 biosynthetic process – positive regulation of peptidyl-tyrosine phosphorylation – positive regulation of protein kinase activity – protein amino acid N-linked glycosylation – response to protein stimulus – transmembrane receptor protein tyrosine kinase signaling pathway

Locations for CD4:

T cell receptor complex – early endosome – endoplasmic reticulum lumen – endoplasmic reticulum membrane – external side of plasma membrane – integral to membrane – membrane raft – plasma membrane

Source: NCBI Entrez Gene, Gene Ontology