>1a50B (B:) SEQRES residues ttllnpyfgefggmyvpqilmpalnqleeafvraqkdpefqaqfadllknyagrptaltk cqnitagtrttlylkredllhggahktnqvlgqallakrmgkseiiaetgagqhgvasal asallglkcriymgakdverqspnvfrmrlmgaevipvhsgsatlkdacnealrdwsgsy etahymlgtaagphpyptivrefqrmigeetkaqildkegrlpdaviacvgggsnaigmf adfindtsvgligvepgghgietgehgaplkhgrvgiyfgmkapmmqtadgqieesysis agldfpsvgpqhaylnsigradyvsitddealeafktlcrhegiipalesshalahalkm mreqpekeqllvvnlsgrgdkdiftvhdilkargei