>4y1rA (A:) observed residues (from ATOM records)
tkkvaiilanefedieysspkealenagfntvvigdtansevvgkhgekvtvdvgiaeak
pedydallipggfspdhlrgdtegrygtfakyftkndvptfaichgpqilidtddlkgrt
ltavlnvrkdlsnagahvvdesvvvdnnivtsrvpddlddfnreivkqlql