Xnp 4833408C14Rik protein coding gene genetic mapping HP1-BP38 http://identifiers.org/mgd/MGI:103067 Xnp|XH2|Hp1bp2|Rad54|4833408C14Rik|HP1-BP38|alpha thalassemia/mental retardation syndrome X-linked|DXHXS6677E MGI:103067 Hp1bp2 O ATRX, chromatin remodeler - DXHXS6677E Rad54 Gene Atrx XH2 alpha thalassemia/mental retardation syndrome X-linked