Chains and heterogens:
PDB Chain Sequences:
>2ptkA (A:) ggvttfvalydyesrtetdlsfkkgerlqivnntegdwwlahslttgqtgyipsnyvaps dsiqaeewyfgkitrreserlllnpenprgtflvresettkgayclsvsdfdnakglnvk hykirkldsggfyitsrtqfsslqqlvayyskhadglchrltnvcptskpqtqglakdaw eipreslrlevklgqgcfgevwmgtwngttrvaiktlkpgnmspeaflqeaqvmkklrhe klvqlyavvseepiyivteymskgslldflkgemgkylrlpqlvdmaaqiasgmayverm nyvhrdlraanilvgenlvckvadfglgrliedneytarqgakfpikwtapeaalygrft iksdvwsfgilltelttkgrvpypgmvnrevldqvergyrmpcppecpeslhdlmcqcwr kdpeerptfeylqafledyftstepqyqpgenl
>2ptkA (A:) vttfvalydyesrtetdlsfkkgerlqivnntegdwwlahslttgqtgyipsnyvapsds iqaeewyfgkitrreserlllnpenprgtflvresettkgayclsvsdfdnakglnvkhy kirkldsggfyitsrtqfsslqqlvayyskhadglchrltnvcptskpqtqglakdawei preslrlevklgqgcfgevwmgtwngttrvaiktlkppeaflqeaqvmkklrheklvqly avvseepiyivteymskgslldflkgemgkylrlpqlvdmaaqiasgmayvermnyvhrd lraanilvgenlvckvadfglfpikwtapeaalygrftiksdvwsfgilltelttkgrvp ypgmvnrevldqvergyrmpcppecpeslhdlmcqcwrkdpeerptfeylqafledyfts tepqyq