>1s72Y (Y:) observed residues (from ATOM records) telqargltektpdlsdedarlltqrhrvgkpqfnrqdhhkkkrvstswrkprgqlskqr rgikgkgdtveagfrsptavrgkhpsgfeevrvhnvddlegvdgdteavriaskvgarkr erieeeaedagirvlnptyvev