>2c1nB (B:) observed residues (from ATOM records)
mdknelvqkaklaeqaeryddmaacmksvteqgaelsneernllsvayknvvgarrsswr
vvssieqktegaekkqqmareyrekietelrdicndvlsllekflipnasqaeskvfylk
mkgdyyrylaevakgivdqsqqayqeafeiskkemqpthpirlglalnfsvfyyeilnsp
ekacslaktafdeaiaeldtlseesykdstlimqllrdnltlwts