>2w3lA (A:) observed residues (from ATOM records)
ydnreivmkyihyklsqrgyewdasevvhktlreagddfsrryrrdfaemssglhltpft
argrfatvveelfrdgvnwgrivaffefggvmcvesvnremsplvdnialwmteylnrhl
htwiqdnggwdafvelygpsm