1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ active site structure -, 671075 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ highly conserved active site structure, active site residues Asp157, Glu159, and Glu241, residue His219 is essential for placing the substrate in the active site for optimal catalysis 675038 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ mechanism 286427 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ random ordered mechanism, though binding of NADPH first is preferential at 0.2 mM due to its low Km. Conformational equilibrium between a predominant, inactive open form and a minor, active closed form of the unliganded enzyme, overview 724374 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ random substrate binding and ordered release of NADP+ followed by partially rate-limiting release of 2-C-methyl-D-erythritol 4-phosphate, transient generation of MtDXR-NADPH-MEP ternary complex, kinetic analysis and modeling, overview 724346 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ reaction mechanism 675577 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ reaction mechanism via 2-C-methylerythrose 4-phosphate intermediate 672538 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ retro-aldol/aldol mechanism 684434 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ steady-state random mechanism 654748 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ stereochemistry 286421 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ the conserved active site residue Trp204 is important in catalysis 671590 1.1.1.267 2-C-methyl-D-erythritol 4-phosphate + NADP+ = 1-deoxy-D-xylulose 5-phosphate + NADPH + H+ the reaction does not exhibit burst kinetics for either substrate, indicating that product release is not rate-limiting, the rearrangement step, which precedes hydride transfer, is rate-limiting for 1-deoxy-D-xylulose 5-phosphate but becomes partially ratelimiting for 1-fluoro-1-deoxy-D-xylulose 5-phosphate, thus, rearrangement appears to be enhanced by substitution of a hydrogen atom in the methyl group of 1-deoxy-D-xylulose 5-phosphate by fluorine, consistent with a retro-aldol/aldol mechanism for the rearrangement during conversion of 1-deoxy-D-xylulose 5-phosphate to 2-C-methyl-D-erythritol 4-phosphate 672040