Tags: Protein.
For the Japanese game see Super Donkey Kong 2Protein sidekick-2 is a protein that in humans is encoded by the SDK2 gene.The protein encoded by this gene is a member of the immunoglobulin superfamily. The protein contains two immunoglobulin domains and thirteen fibronectin type III domains. Fibronectin type III domains are present in both extracellular and intracellular proteins and tandem repeats are known to contain binding sites for DNA heparin and the cell surface.