Chains and heterogens:
PDB Chain Sequences:
>1qy4A (A:) mykepfgvkvdfetgiiegakksvrrlsdmegyfvderawkelvekedpvvyevyaveqe ekegdlnfattvlypgkvgkeffftkghfhakldraevyvalkgkggmllqtpegdakwi smepgtvvyvppywahrtvnigdepfiflaiypadaghdygtiaekgfskivieengevk vvdnprwkk
>1qy4A (A:) mykepfgvkvdfetgiiegakksvrrlsdmegyfvderawkelvekedpvvyevyaveqe ekegdlnfattvlypgkvgkeffftkghfhakldraevyvalkgkggmllqtpegdakwi smepgtvvyvppywahrtvnigdepfiflaiypadaghdygtiaekgfskivieengevk vvdnprw
>1qy4B (B:) mykepfgvkvdfetgiiegakksvrrlsdmegyfvderawkelvekedpvvyevyaveqe ekegdlnfattvlypgkvgkeffftkghfhakldraevyvalkgkggmllqtpegdakwi smepgtvvyvppywahrtvnigdepfiflaiypadaghdygtiaekgfskivieengevk vvdnprwkk
>1qy4B (B:) mykepfgvkvdfetgiiegakksvrrlsdmegyfvderawkelvekedpvvyevyaveqe ekegdlnfattvlypgkvgkeffftkghfhakldraevyvalkgkggmllqtpegdakwi smepgtvvyvppywahrtvnigdepfiflaiypadaghdygtiaekgfskivieengevk vvdnprw