Chains and heterogens:
PDB Chain Sequences:
>1nubA (A:) apcqnhhckhgkvceldenntpmcvcqdptscpapigefekvcsndnktfdsschffatk ctlegtkkghklhldyigpckyippcldseltefplrmrdwlknvlvtlyerdednnllt ekqklrvkkihenekrleagdhpeknynmyifpvhwqfgqldqhpidgylshtelaplra plipmehcttrffetcdldndkyialdewagcfgikqkdidkdlvi
>1nubB (B:) apcqnhhckhgkvceldenntpmcvcqdptscpapigefekvcsndnktfdsschffatk ctlegtkkghklhldyigpckyippcldseltefplrmrdwlknvlvtlyerdednnllt ekqklrvkkihenekrleagdhpeknynmyifpvhwqfgqldqhpidgylshtelaplra plipmehcttrffetcdldndkyialdewagcfgikqkdidkdlvi