Chains and heterogens:
PDB Chain Sequences:
>3tx7A (A:) snlinyqddaelatraipeltkllndedqvvvnkaavmvhqlskkeasrhaimrspqmvs aivrtmqntndvetarctagtlhnlshhregllaifksggipalvkmlgspvdsvlfyai ttlhnlllhqegakmavrlagglqkmvallnktnvkflaittdclqilaygnqeskliil asggpqalvnimrtytyekllwttsrvlkvlsvcssnkpaiveaggmqalglhltdpsqr lvqnclwtlrnlsdaatkqegmegllgtlvqllgsddinvvtcaagilsnltcnnyknkm mvcqvggiealvrtvlragdreditepaicalrhltsrhqeaemaqnavrlhyglpvvvk llhppshwplikatvglirnlalcpanhaplreqgaiprlvqllvrahqdtqrrtsmggt qqqfvegvrmeeivegctgalhilardvhnrivirglntiplfvqllyspieniqrvaag vlcelaqdkeaaeaieaegatapltellhsrnegvatyaaavlfrms
>3tx7A (A:) latraipeltkllndedqvvvnkaavmvhqlskkeasrhaimrspqmvsaivrtmqntnd vetarctagtlhnlshhregllaifksggipalvkmlgspvdsvlfyaittlhnlllhqe gakmavrlagglqkmvallnktnvkflaittdclqilaygnqeskliilasggpqalvni mrtytyekllwttsrvlkvlsvcssnkpaiveaggmqalglhltdpsqrlvqnclwtlrn lsdaatkqegmegllgtlvqllgsddinvvtcaagilsnltcnnyknkmmvcqvggieal vrtvlragdreditepaicalrhltsrhqeaemaqnavrlhyglpvvvkllhppshwpli katvglirnlalcpanhaplreqgaiprlvqllvrahqdtqqfvegvrmeeivegctgal hilardvhnrivirglntiplfvqllyspieniqrvaagvlcelaqdkeaaeaieaegat apltellhsrnegvatyaaavlfr
>3tx7B (B:) slkleamsqviqampsdltissaiqnihsaskglplnhaalpptdydrspfvtspismtm pphgslqgyqtyghfpsraikseypdpytsspesimgysymdsyqtsspasiphlilell kcepdepqvqakimaylqqeqanrskheklstfglmckmadqtlfsivewarssiffrel kvddqmkllqncwsellildhiyrqvvhgkegsiflvtgqqvdysiiasqagatlnnlms haqelvaklrslqfdqrefvclkflvlfsldvknlenfqlvegvqeqvnaalldytmcny pqqtekfgqlllrlpeiraismqaeeylyykhlngdvpynnlliemlhakra
>3tx7B (B:) asiphlilellkcepdepqvqakimaylqqeqaklstfglmckmadqtlfsivewarssq mkllqncwsellildhiyrqvvhgkegsiflvtgqqvdysiiasqagatlnnlmshaqel vaklrslqfdqrefvclkflvlfsldvqlvegvqeqvnaalldytmcnypqqtekfgqll lrlpeiraismqaeeylyykhlngdvpynnlliemlha