>1f50A (A:) observed residues (from ATOM records) tgrpewiwlalgtalmglgtlyflvkgmgvsdpdakkfyaittlvpaiaftmylsmllgy gltmvpfggeqnpiywaryadwlfttplllldlallvdadqgtilalvgadgimigtglv galtkvysyrfvwwaistaamlyilyvlffgfsmrpevastfkvlrnvtvvlwsaypvvw ligsegagivplniqtllfmvldvsakvgfglillrsraifg