>3a6pH (H:) observed residues (from ATOM records)
pqvqfklvlvgdggtgkttfvkrhltgefekkyvatlgvevhplvfhtnrgpikfnvwdt
agqekfgglrdgyyiqaqcaiimfdvtsrvtyknvpnwhrdlvrvcenipivlcgnkvdi
kdrkvkaksivfhrkknlqyydisaksnynfekpflwlarkligdpnlef