>1sy6A (A:) observed residues (from ATOM records)
mqsikgnhlvkvydyqedgsvlltcdaeaknitwfkdgkmigfltedkkkwnlgsnakdp
rgmyqckgsqnkskplqvyyrmqtpykvsisgttviltcpqypgseilwqhndkniggde
ddknigsdedhlslkefseleqsgyyvcyprgskpedanfylylrarv