>sp|P01921|HB2D_MOUSE H-2 class II histocompatibility antigen, A-D beta chain OS=Mus musculus GN=H2-Ab1
MALQIPSLLLSAAVVVLMVLSSPRTEGGNSERHFVVQFKGECYYTNGTQRIRLVTRYIYN
REEYVRYDSDVGEYRAVTELGRPDAEYWNSQPEILERTRAEVDTACRHNYEGPETSTSLR
RLEQPNVAISLSRTEALNHHNTLVCSVTDFYPAKIKVRWFRNGQEETVGVSSTQLIRNGD
WTFQVLVMLEMTPHQGEVYTCHVEHPSLKSPITVEWRAQSESARSKMLSGIGGCVLGVIF
LGLGLFIRHRSQKGPRGPPPAGLLQ