>2bkuA (A:) observed residues (from ATOM records)
vqfklvlvgdggtgkttfvkrhltgefekkyvptlgvevhplvfhtnrgpikfnvwdtag
qekfgglrdgyyiqaqcaiimfdvtsrvtyknvpnwhrdlvrvcenipivlcgnkvdikd
rkvkaksivfhrkknlqyydisaksnynfekpflwlarkligdpnlefv