SNRPB GI:4507125 small nuclear ribonucleoprotein polypeptide B/B' isoform B 1 mtvgksskml qhidyrmrci lqdgrifigt fkafdkhmnl ilcdcdefrk 50 51 ikpknskqae reekrvlglv llrgenlvsm tvegpppkdt giarvplaga 100 101 aggpgigraa grgipagvpm pqapaglagp vrgvggpsqq vmtpqgrgtv 150 151 aaaaaaatas iagaptqypp grggppppmg rgapppgmmg pppgmrppmg 200 201 ppmgippgrg tpmgmpppgm rppppgmrgl l