Chains and heterogens:
PDB Chain Sequences:
>3zp3E (E:) mekivllfaivslvksdqicigyhannsteqvdtimeknvtvthaqdilekkhngklcdl dgvkplilrdcsvagwllgnpmcdefinvpewsyivekanpvndlcypgdfndyeelkhl lsrinhfekiqiipksswssheaslgvssvcpyqgkssffrnvvwlikknstyptikrsy nntnqedllvlwgihhpndaaeqtklyqnpttyisvgtstlnqrlvpriatrskvngqsg rmeffwtilkpndainfesngnfiapeyaykivkkgdstimkseleygncntkcqtpmga inssmpfhnihpltigecpkyvksnrlvlatglrnspqre
>3zp3E (E:) dqicigyhannsteqvdtimeknvtvthaqdilekkhngklcdldgvkplilrdcsvagw llgnpmcdefinvpewsyivekanpvndlcypgdfndyeelkhllsrinhfekiqiipks swssheaslgvssvcpyqgkssffrnvvwlikknstyptikrsynntnqedllvlwgihh pndaaeqtklyqnpttyisvgtstlnqrlvpriatrskvngqsgrmeffwtilkpndain fesngnfiapeyaykivkkgdstimkseleygncntkcqtpmgainssmpfhnihpltig ecpkyvksnrlvlatglrnsp
>3zp3F (F:) glfgaiagfieggwqgmvdgwygyhhsneqgsgyaadkestqkaidgvtnkvnsiidkmn tqfeavgrefnnlerrienlnkkmedgfldvwtynaellvlmenertldfhdsnvknlyd kvrlqlrdnakelgngcfefyhkcdnecmesvrngtydyp
>3zp3F (F:) glfgaiagfieggwqgmvdgwygyhhsneqgsgyaadkestqkaidgvtnkvnsiidkmn tqfeavgrefnnlerrienlnkkmedgfldvwtynaellvlmenertldfhdsnvknlyd kvrlqlrdnakelgngcfefyhkcdnecmesvrngtyd