Chains and heterogens:
PDB Chain Sequences:
>1j72A (A:) mytaipqsgspfpgsvqdpglhvwrveklkpvpvaqenqgvffsgdsylvlhngpeevsh lhlwigqqssrdeqgacavlavqlddylggrpvqhrevqgnesdlfmsyfprglkyqegg vesgfkhvvpnevvvqrlyqvkgkknirateralnwdsfntgdcfildlgqnifawcggk snilernkardlalairdserqgkaqveivtdgeepaemiqvlgpkpalkegnpeedlta dkanaqaaalykvsdatgqmnltkvadsspfalellisddcfvldnglcgkiyiwkgrka nekerqaalqvaegfisrmqyapntqveilpqgrespifkqffkdwk
>1j72A (A:) pfpgsvqdpglhvwrveklkpvpvaqenqgvffsgdsylvlhngpeevshlhlwigqqss rdeqgacavlavqlddylggrpvqhrevqgnesdlfmsyfprglkyqeggvesgfkhvvp nevvvqrlyqvkgkknirateralnwdsfntgdcfildlgqnifawcggksnilernkar dlalairdserqgkaqveivtdgeepaemiqvlgpkpalkegnpeedltadkanaqaaal ykvsdatgqmnltkvadsspfalellisddcfvldnglcgkiyiwkgrkanekerqaalq vaegfisrmqyapntqveilpqgrespifkqffkdwk