Chains and heterogens:
PDB Chain Sequences:
>1b7gO (O:) mvnvavngygtigkrvadaiikqpdmklvgvaktspnyeafiahrrgiriyvpqqsikkf eesgipvagtvedliktsdivvdttpngvgaqykpiylqlqrnaifqggekaevadisfs alcnynealgkkyirvvscnttallrtictvnkvskvekvrativrraadqkevkkgpin slvpdpatvpshhakdvnsvirnldiatmaviapttlmhmhfinitlkdkvekkdilsvl entprivlisskydaeataelvevardlkrdrndipevmifsdsiyvkddevmlmyavhq esivvpenidairasmklmsaedsmritneslgilkgyli
>1b7gQ (Q:) mvnvavngygtigkrvadaiikqpdmklvgvaktspnyeafiahrrgiriyvpqqsikkf eesgipvagtvedliktsdivvdttpngvgaqykpiylqlqrnaifqggekaevadisfs alcnynealgkkyirvvscnttallrtictvnkvskvekvrativrraadqkevkkgpin slvpdpatvpshhakdvnsvirnldiatmaviapttlmhmhfinitlkdkvekkdilsvl entprivlisskydaeataelvevardlkrdrndipevmifsdsiyvkddevmlmyavhq esivvpenidairasmklmsaedsmritneslgilkgyli