Discoidin Domain Receptor Family, Member 2 gene encodes for discoidin domain receptors (DDR2), it consists of 855 amino acids and weighs about 97 kDa. DDR2 is a member of the subfamily of receptor tyrosine kinases (RTKs) that regulate cell differentiation, remodeling of the extracellular matrix, cell migration, and cell proliferation. DDR2 is found on cells of mesenchymal origin, and it functions in human skeletal growth.