Chains and heterogens:
PDB Chain Sequences:
>2ps4A (A:) menfpteyflnttvrlleyiryrdsnytreerienlhyaynkaahhfaqprqqqllkvdp krlqaslqtivgmvvyswakvskecmadlsihytytlvlddskddpyptmvnyfddlqag reqahpwwalvnehfpnvlrhfgpfcslnlirstldffegcwieqynfggfpgshdypqf lrrmnglghcvgaslwpkeqfnerslfleitsaiaqmenwmvwvddlmsfykefdderdq islvknyvvsdeislhealekltqdtlhsskqmvavfsdkdpqvmdtiecfmhgyvtwhl cdrryrlseiyekvkeektedaqkfckfyeqaanvgavspsewayppvaqlanvrskdvk evqkpflssielve
>2ps4A (A:) menfpteyflnttvrlleyiryrdsnytreerienlhyaynkaahhfaqprqqqllkvdp krlqaslqtivgmvvyswakvskecmadlsihytytlvlddskddpyptmvnyfddlqag reqahpwwalvnehfpnvlrhfgpfcslnlirstldffegcwieqynfggfpgshdypqf lrrmnglghcvgaslwpkeqfnerslfleitsaiaqmenwmvwvddlmsfykefdderdq islvknyvvsdeislhealekltqdtlhsskqmvavfsdkdpqvmdtiecfmhgyvtwhl cdrryrlseiyekvkeektedaqkfckfyeqaanvgavspsewayppvaqlanv
>2ps4B (B:) menfpteyflnttvrlleyiryrdsnytreerienlhyaynkaahhfaqprqqqllkvdp krlqaslqtivgmvvyswakvskecmadlsihytytlvlddskddpyptmvnyfddlqag reqahpwwalvnehfpnvlrhfgpfcslnlirstldffegcwieqynfggfpgshdypqf lrrmnglghcvgaslwpkeqfnerslfleitsaiaqmenwmvwvddlmsfykefdderdq islvknyvvsdeislhealekltqdtlhsskqmvavfsdkdpqvmdtiecfmhgyvtwhl cdrryrlseiyekvkeektedaqkfckfyeqaanvgavspsewayppvaqlanvrskdvk evqkpflssielve
>2ps4B (B:) pteyflnttvrlleyiryrdsnytreerienlhyaynkaahhfaqprqqqllkvdpkrlq aslqtivgmvvyswakvskecmadlsihytytlvlddskddpyptmvnyfddlqagreqa hpwwalvnehfpnvlrhfgpfcslnlirstldffegcwieqynfggfpgshdypqflrrm nglghcvgaslwpkeqfnerslfleitsaiaqmenwmvwvddlmsfykefdderdqislv knyvvsdeislhealekltqdtlhsskqmvavfsdkdpqvmdtiecfmhgyvtwhlcdrr yrlseiyekvkeektedaqkfckfyeqaanvgavspsewayppvaqlanv