Chains and heterogens:
PDB Chain Sequences:
>1v18A (A:) havvnlinyqddaelatraipeltkllndedqvvvnkaavmvhqlskkeasrhaimrspq mvsaivrtmqntndvetarctagtlhnlshhregllaifksggipalvkmlgspvdsvlf yaittlhnlllhqegakmavrlagglqkmvallnktnvkflaittdclqilaygnqeskl iilasggpqalvnimrtytyekllwttsrvlkvlsvcssnkpaiveaggmqalglhltdp sqrlvqnclwtlrnlsdaatkqegmegllgtlvqllgsddinvvtcaagilsnltcnnyk nkmmvcqvggiealvrtvlragdreditepaicalrhltsrhqeaemaqnavrlhyglpv vvkllhppshwplikatvglirnlalcpanhaplreqgaiprlvqllvrahqdtqrrtsm ggtqqqfvegvrmeeivegctgalhilardvhnrivirglntiplfvqllyspieniqrv aagvlcelaqdkeaaeaieaegatapltellhsrnegvatyaaavlfrmsedkpqdyk
>1v18A (A:) traipeltkllndedqvvvnkaavmvhqlskkeasrhaimrspqmvsaivrtmqntndve tarctagtlhnlshhregllaifksggipalvkmlgspvdsvlfyaittlhnlllhqega kmavrlagglqkmvallnktnvkflaittdclqilaygnqeskliilasggpqalvnimr tytyekllwttsrvlkvlsvcssnkpaiveaggmqalglhltdpsqrlvqnclwtlrnls daatkqegmegllgtlvqllgsddinvvtcaagilsnltcnnyknkmmvcqvggiealvr tvlragdreditepaicalrhltsrhqeaemaqnavrlhyglpvvvkllhppshwplika tvglirnlalcpanhaplreqgaiprlvqllvrahqdtqrrqfvegvrmeeivegctgal hilardvhnrivirglntiplfvqllyspieniqrvaagvlcelaqdkeaaeaieaegat apltellhsrnegvatyaaavlfrmsed