Tags: Protein.
HLA class II histocompatibility antigen DM alpha chain is a protein that in humans is encoded by the HLA-DMA gene.HLA-DMA belongs to the HLA class II alpha chain paralogues. This class II molecule is a heterodimer consisting of an alpha (DMA) and a beta chain (DMB) both anchored in the membrane. It is located in intracellular vesicles. DM plays a central role in the peptide loading of MHC class II molecules by helping to release the CLIP molecule from the peptide binding site.