>1y23B (B:) SEQRES residues mhcaencifckiiagdipsakvyedehvlafldisqvtkghtlvipkthienvyeftdel akqyfhavpkiarairdefepiglntlnnngekagqsvfhyhmhiiprygkgdgfgavwk thaddykpedlqnisssiakrlass