>1sq3B (B:) observed residues (from ATOM records)
sisekmvealnrqinaeiysaylylsmasyfdsiglkgfsnwmrvqwqeelmhamkmfdf
vserggrvklyaveeppsewdsplaafehvyehevnvtkrihelvemamqekdfatynfl
qwyvaeqveeeasaldiveklrligedkrallfldkelslrq