>2yd7B (B:) observed residues (from ATOM records)
etpprftrtpvdqtgvsggvasficqatgdprpkivwnkkgkkvsnqrfeviefddgsgs
vlriqplrtprdeaiyecvasnnvgeisvstrltvlredqiprgfptidmgpqlkvvert
rtatmlcaasgnpdpeitwfkdflpvdtrikqlrsesigalqieqseesdqgkyecvatn
sagtrysapanlyvr