>1u56B (B:) observed residues (from ATOM records) mkgtivgtwiktlrdlygndvvdeslksvgwepdrvitpledidddevrrifakvsektg knvneiwrevgrqniktfsewfpsyfagrrlvnflmmmdevhlqltkmikgatpprliak pvakdaiemeyvskrkmydyflgliegsskffkeeisveevergekdgfsrlkvrikfkn pvf