Tags: Protein.
Leukocyte surface antigen CD53 is a protein that in humans is encoded by the CD53 gene.The protein encoded by this gene is a member of the transmembrane 4 superfamily also known as the tetraspanin family. Most of these members are cell-surface proteins that are characterized by the presence of four hydrophobic domains. The proteins mediate signal transduction events that play a role in the regulation of cell development activation growth and motility.