https://www.ncbi.nlm.nih.gov/Structure/pdb/7ZDU
7ZDU: Occ(apo/return) conformation of CydDC mutant (E500Q.C) in ATP(CydC)/ATP(CydD) bound state...
ATP-binding/permease protein CydCATP-binding/permease protein CydDADENOSINE-5'-TRIPHOSPHATEMAGNESIUM ION