HLA class II histocompatibility antigen, DM alpha chain MGHEQNQGAA LLQMLPLLWL LPHSWAVPEG FPIAEVFTLK PLEFGKPNTL VCFVSNLFPP MLTVNWQHHS VPVEGFGPTF VSAVDGLSFQ AFSYLNFTPE PSDIFSCIVT HEIDRYTAIA YWVPRNALPS DLLENVLCGV AFGLGVLGII VGIVLIIYFR KPCSGD