Chains and heterogens:
PDB Chain Sequences:
>2xn8A (A:) hhhhhhmpspnlppgfdftdpaiyaerlpvaefaelrsaapiwwngqdpgkgggfhdggf waitklndvkeisrhsdvfssyengviprfkndiaredievqrfvmlnmdaphhtrlrki isrgftpravgrlhdelqeraqkiaaeaaaagsgdfveqvscelplqaiagllgvpqedr gklfhwsnemtgnedpeyahidpkassaeligyamkmaeekaknpaddivtqliqadidg eklsddefgffvvmlavagnettrnsitqgmmafaehpdqwelykkvrpetaadeivrwa tpvtafqrtalrdyelsgvqikkgqrvvmfyrsanfdeevfqdpftfnilrnpnphvgfg gtgahyciganlarmtinlifnavadhmpdlkpisaperlrsgwlngikhwqvdytgrlp vah
>2xn8A (A:) spnlppgfdftdpaiyaerlpvaefaelrsaapiwwngqdpgkgggfhdggfwaitklnd vkeisrhsdvfssyengviprfkndiaredievqrfvmlnmdaphhtrlrkiisrgftpr avgrlhdelqeraqkiaaeaaaagsgdfveqvscelplqaiagllgvpqedrgklfhwsn emtgnedpeyahidpkassaeligyamkmaeekakaddivtqliqadgeklsddefgffv vmlavagnettrnsitqgmmafaehpdqwelykkvrpetaadeivrwatpvtafqrtalr dyelsgvqikkgqrvvmfyrsanfdeevfqdpftfnilrnpnphvgfggtgahyciganl armtinlifnavadhmpdlkpisaperlrsgwlngikhwqvdytgrlpv