>4piuB (B:) observed residues (from ATOM records) mngaikvgawggnggsafdmgpayriisvkifsgdvvdgvdvtftyygktetrhyggsgg tpheivlqegeylvgmagevanytgavvlgklgfstnkkaygpfgntggtpfslpiaagk isgffgrggkfldaigvylepl