Chains and heterogens:
PDB Chain Sequences:
>1zs2A (A:) spnsqylktrildiytpeqragieksedwrqfsrrmdthfpklmneldsvygnneallpm lemllaqawqsysqrnsslkdidiarennpdwilsnkqvggvcyvdlfagdlkglkdkip yfqelgltylylmplfkcpegksdggyavssyrdvnpalgtigdlreviaalheagisav vdfifnhtsnehewaqrcaagdplfdnfyyifpdrrmpdqydrtlreifpdqhpggfsql edgrwvwttfnsfqwdlnysnpwvframagemlflanlgvdilrmdavafiwkqmgtsce nlpqahalirafnavmriaapavffksqaivhpdqvvqyigqdecqigynplqmallwnt latrevnllhqaltyrhnlpehtawvnyvrshddigwtfadedaaylgisgydhrqflnr ffvnrfdgsfargvpfqynpstgdcrvsgtaaalvglaqddphavdrikllysialstgg lpliylgdevgtlndddwsqdsnksddsrwahrprynealyaqrndpstaagqiyqglrh miavrqsnprfdggrlvtfntnnkhiigyirnnallafgnfseypqtvtahtlqampfka hdliggktvslnqdltlqpyqvmwleia