dystroglycan 1 - protein coding gene dystrophin associated glycoprotein 1 alpha-dystroglycan|beta-dystroglycan|dystrophin associated glycoprotein 1|D9Wsu13e|DG http://identifiers.org/mgd/MGI:101864 genetic mapping beta-dystroglycan MGI:101864 DG D9Wsu13e Gene O alpha-dystroglycan Dag1