>1k73M (M:) SEQRES residues
tskkkrqrgsrthgggshknrrgaghrggrgdagrdkhefhnheplgksgfkrpqkvqee
aatidvreidenvtllaaddvaevedggfrvdvrdvveeaddadyvkvlgagqvrheltl
iaddfsegarekvegaggsveltdlgeerqaeaeetedadadee