6.3.2.5 | structure of the C-terminal recombinant fragment of Escherichia coli Dfp protein spanning Ser181 to Arg406 which harbors the structures of the phosphopantothenoylcysteine synthetase, apo-form and the synthetase complexed with CTP, the activated acyl-intermediate, 4'-phosphopantothenoyl-CMP and with the reaction product CMP, sitting drop vapor diffusion |