>2v74B (B:) observed residues (from ATOM records)
avqyfqfygylsqqqnmmqdyvrtgtyqrailqnhtdfkdkivldvgcgsgilsffaaqa
garkiyaveastmaqhaevlvksnnltdrivvipgkveevslpeqvdiiisepmgymlfn
ermlesylhakkylkpsgnmfptigdvhlapftdeqlymeqftkanfwyqpsfhgvdlsa
lrgaavdeyfrqpvvdtfdirilmaksvkytvnfleakegdlhrieipfkfhmlhsglvh
glafwfdvafigsimtvwlstapteplthwyqvrclfqsplfakagdtlsgtclliankr
qsydisivaqvdqtgskssnlldlknpffry