Chains and heterogens:
PDB Chain Sequences:
>1yyrA (A:) menfpteyflnttvrlleyiryrdsnytreerienlhyaynkaahhfaqprqqqllkvdp krlqaslqtivgmvvyswakvskecmadlsihytytlvlddskddpyptmvnyfddlqag reqahpwwalvnehfpnvlrhfgpfcslnlirstldffegcwieqynfggfpgshdypqf lrrmnglghcvgaslwpkeqfnerslfleitsaiaqmenwmvwvndlmsfykefdderdq islvknyvvsdeislhealekltqdtlhsskqmvavfsdkdpqvmdtiecfmhgyvtwhl cdrrfrlseiyekvkeektedaqkfckfyeqaanvgavspsewayppvaqlanvrskdvk evqkpflssielve
>1yyrA (A:) enfpteyflnttvrlleyiryrdsnytreerienlhyaynkaahhfaqprqqqllkvdpk rlqaslqtivgmvvyswakvskecmadlsihytytlvlddskddpyptmvnyfddlqagr eqahpwwalvnehfpnvlrhfgpfcslnlirstldffegcwieqynfggfpgshdypqfl rrmnglghcvgaslwpkeqfnerslfleitsaiaqmenwmvwvndlmsfykefdderdqi slvknyvvsdeislhealekltqdtlhsskqmvavfsdkdpqvmdtiecfmhgyvtwhlc drrfrlseiyekvkeektedaqkfckfyeqaanvgavspsewayppvaqlanv
>1yyrB (B:) menfpteyflnttvrlleyiryrdsnytreerienlhyaynkaahhfaqprqqqllkvdp krlqaslqtivgmvvyswakvskecmadlsihytytlvlddskddpyptmvnyfddlqag reqahpwwalvnehfpnvlrhfgpfcslnlirstldffegcwieqynfggfpgshdypqf lrrmnglghcvgaslwpkeqfnerslfleitsaiaqmenwmvwvndlmsfykefdderdq islvknyvvsdeislhealekltqdtlhsskqmvavfsdkdpqvmdtiecfmhgyvtwhl cdrrfrlseiyekvkeektedaqkfckfyeqaanvgavspsewayppvaqlanvrskdvk evqkpflssielve
>1yyrB (B:) nfpteyflnttvrlleyiryrdsnytreerienlhyaynkaahhfaqprqqqllkvdpkr lqaslqtivgmvvyswakvskecmadlsihytytlvlddskddpyptmvnyfddlqagre qahpwwalvnehfpnvlrhfgpfcslnlirstldffegcwieqynfggfpgshdypqflr rmnglghcvgaslwpkeqfnerslfleitsaiaqmenwmvwvndlmsfykefdderdqis lvknyvvsdeislhealekltqdtlhsskqmvavfsdkdpqvmdtiecfmhgyvtwhlcd rrfrlseiyekvkeektedaqkfckfyeqaanvgavspsewayppvaqlanv