Chains and heterogens:
PDB Chain Sequences:
>1xb2A (A:) aveakktyvrdkphvnvgtighvdhgkttltaaitkilaegggakfkkyeeidnapeera rgitinaahveystaarhyahtdcpghadyvknmitgtapldgcilvvaandgpmpqtre hlllarqigvehvvvyvnkadavqdsemvelveleirelltefgykgeetpiivgsalca leqrdpelglksvqklldavdtyipvptrdlekpfllpvesvysipgrgtvvtgtlergi lkkgdeceflghsknirtvvtgiemfhksldraeagdnlgalvrglkredlrrglvmakp gsiqphqkveaqvyiltkeeggrhkpfvshfmpvmfsltwdmacriilppgkelampged lkltlilrqpmilekgqrftlrdgnrtigtglvtdtpamteedknikws
>1xb2A (A:) phvnvgtighvdhgkttltaaitkilaehveystaarhyahtdcpghadyvknmitgtap ldgcilvvaandgpmpqtrehlllarqigvehvvvyvnkadavqdsemvelveleirell tefgykgeetpiivgsalcaleqrdpelglksvqklldavdtyipvptrdlekpfllpve svysipgrgtvvtgtlergilkkgdeceflghsknirtvvtgiemfhksldraeagdnlg alvrglkredlrrglvmakpgsiqphqkveaqvyiltkeeggrhkpfvshfmpvmfsltw dmacriilppgkelampgedlkltlilrqpmilekgqrftlrdgnrtigtglvtdtpamt eedknikws
>1xb2B (B:) sasskellmklrrktgysfinckkaletcggdlkqaeswlhkqaqkegwskaarlhgrkt kegligllqegdttvlvevncetdfvsrnlkfqqlvqqvalgtllhcqnlkdqlstyskg flnsselselpagperegslkdqlalaigklgenmilkraawvkvpagfyvgsyvhgamh spslhnlvlgkygalvicetselkanladlgrrlgqhvvgmaplsvgslddepggeaetk mlsqpylldpsitlgqyvqphgvsvvdfvrfecgegedaadaelehhhhhh
>1xb2B (B:) sasskellmklrrktgysfinckkaletcggdlkqaeswlhkqaqkegwskaarlhgrkt kegligllqegdttvlvevncetdfvsrnlkfqqlvqqvalgtllhcqnlkdqlstyskg flnsselselpagperegslkdqlalaigklgenmilkraawvkvpagfyvgsyvhgamh spslhnlvlgkygalvicetselkanladlgrrlgqhvvgmaplsvgslddepggeaetk mlsqpylldpsitlgqyvqphgvsvvdfvrfecgeg