Chains and heterogens:
PDB Chain Sequences:
>1k7yA (A:) qaewrswevnkrleyslvkgitefieqdteearqqatrpieviegplmdgmnvvgdlfge gkmflpqvvksarvmkqavaylepfieaskeqgktngkmviatvkgdvgdigknivgvvl qcnnyeivdlgvmvpaekilrtakevnadliglsglitpsldemvnvakemerqgftipl liggattskahtavkieqnysgptvyvqnasrtvgvvaallsdtqrddfvartrkeyetv riqhgrkkprtppvtleaardndfafdwqaytppvahrlgvqeveasietlrnyidwtpf fmtwslagkypriledevvgveaqrlfkdandmldklsaektlnprgvvglfpanrvgdd ieiyrdetrthvinvshhlrqqtektgfanycladfvapklsgkadyigafavtggleed aladafeaqhddynkimvkaladrlaeafaeylhervrkvywgyapnenlsneelireny qgirpapgypacpehtekatiwellevekhtgmkltesfamwpgasvsgwyfshpdskyy avaqiqrdqvedyarrkgmsvteverwlapnlgydad