Chains and heterogens:
PDB Chain Sequences:
>1vpyA (A:) mgsdkihhhhhhmirlgltsfsehdyltgkkrstlyeyashlplvemdtayygippkerv aewvkavpenfrfvmkvysgiscqgewqtyyaseeemitaflesmaplieskklfaflvq fsgtfgctkenvaylqkirhwfkdlpiaielrnnswyqpnfvkqmlqfmkenqfslvivd epqiptnpvpfypyvtnpnlvlfrfhgrnaagwlandaewrkkrtlyhyntqeiadlsea vlkmsqeakevgvifnnnsggdaaenalqmqkvlnlsyddlnpkqldlf
>1vpyA (A:) hhhhmirlgltsfsstlyeyashlplvemdtayygippkervaewvkavpenfrfvmkvy sgiscqgewqtyyaseeemitaflesmaplieskklfaflvqfsgtfgctkenvaylqki rhwfkdlpiaielrnnswyqpnfvkqmlqfmkenqfslvivdepqiptnpvpfypyvtnp nlvlfrfhgrnaagwkkrtlyhyntqeiadlseavlkmsqeakevgvifnnnsggdaaen alqmqkvlnls