In molecular biology, CD4 is a glycoprotein that serves as a co-receptor for the T-cell receptor (TCR). CD4 is found on the surface of immune cells such as T helper cells, monocytes, macrophages, and dendritic cells. It was discovered in the late 1970s and was originally known as leu-3 and T4 before being named CD4 in 1984. In humans, the CD4 protein is encoded by the CD4 gene.
Basigin (BSG) also known as extracellular matrix metalloproteinase inducer (EMMPRIN) or cluster of differentiation 147 (CD147) is a protein that in humans is encoded by the BSG gene. This protein is a determinant for the Ok blood group system. There are three known antigens in the Ok system; the most common being Oka, OK2 and OK3. Basigin has been shown to be an essential receptor on red blood cells for the human malaria parasite, Plasmodium falciparum. The common isoform of basigin (basigin-2) has two immunoglobulin domains, and the extended form basigin-1 has three.
T-cell surface glycoprotein CD3 gamma chain is a protein that in humans is encoded by the CD3G gene.
Complement C1q subcomponent subunit A is a protein that in humans is encoded by the C1QA gene.
Basal cell adhesion molecule, also known as Lutheran antigen, is a plasma membrane glycoprotein that in humans is encoded by the BCAM gene. BCAM has also recently been designated CD239.
Pregnancy-specific beta-1-glycoprotein 9 is a protein that in humans is encoded by the PSG9 gene.
Myelin protein zero-like protein 1 is a protein that in humans is encoded by the MPZL1 gene.
OX-2 membrane glycoprotein, also named CD200 is a human protein encoded by the CD200 gene.
Tetraspanin-4 is a protein that in humans is encoded by the TSPAN4 gene.
Protein CREG1 is a protein that in humans is encoded by the CREG1 gene.
Cell adhesion molecule 3 is a protein that in humans is encoded by the CADM3 gene.
Metalloreductase STEAP1 is an enzyme that in humans is encoded by the STEAP1 gene.
Signal-regulatory protein gamma is a protein that in humans is encoded by the SIRPG gene. SIRPG has also recently been designated CD172G.
Tetraspanin-6 is a protein that in humans is encoded by the TSPAN6 gene.
T-cell surface glycoprotein CD3 delta chain is a protein that in humans is encoded by the CD3D gene.
C-type lectin domain family 2 member B is a protein that in humans is encoded by the CLEC2B gene.
Sialidase-2 is an enzyme that in humans is encoded by the NEU2 gene.
GBA2 is the gene that encodes the enzyme non-lysosomal glucosylceramidase in humans. It has glucosylceramidase activity.
Transmembrane 4 L6 family member 5 is a protein that in humans is encoded by the TM4SF5 gene.
Leukocyte immunoglobulin-like receptor subfamily B member 5 is a protein that in humans is encoded by the LILRB5 gene.
