>1s72L (L:) observed residues (from ATOM records)
tskkkrqrgsrthgggshknrrgaghrggrgdagrdkhefhnheplgksgfkrpqkvqee
aatidvreidenvtllaaddvaefrvdvrdvveeaddadyvkvlgagqvrheltliaddf
segarekvegaggsveltdlgeerq