Chains and heterogens:
PDB Chain Sequences:
>2xbfA (A:) gplgsrdykrkyeffrrklkkqndipnkfemklrratvledsyrrimgvkradflkarlw iefdgekgldyggvarewffliskemfnpyyglfeysatdnytlqinpnsglcnedhlsy fkfigrvagmavyhgklldgffirpfykmmlhkpitlhdmesvdseyynslrwilendpt eldlrfiideelfgqthqhelknggseivvtnknkkeyiylviqwrfvnriqkqmaafke gffelipqdlikifdenelellmcglgdvdvndwrehtkykngysanhqviqwfwkavlm mdsekrirllqfvtgtsrvpmngfaelygsngpqsftveqwgtpeklprahtcfnrldlp pyesfeelwdklqmaientqgfdgvd
>2xbfA (A:) srdykrkyeffrrklkkqndipnkfemklrratvledsyrrimgvkradflkarlwiefd gekgldyggvarewffliskemfnpyyglfeysatdnytlqinpnsglcnedhlsyfkfi grvagmavyhgklldgffirpfykmmlhkpitlhdmesvdseyynslrwilendpteldl rfiideelfgqthqhelknggseivvtnknkkeyiylviqwrfvnriqkqmaafkegffe lipqdlikifdenelellmcglgdvdvndwrehtkykngysanhqviqwfwkavlmmdse krirllqfvtgtsrvpmngfaelygsngpqsftveqwgtpeklprahtcfnrldlppyes feelwdklqmaient