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The enzyme involved in making 1-deoxy-d-xylulose 5-phosphate (DXP) is DXP synthase. [2] The mechanism follows a catalysis of decarboxylative condensation of pyruvate and d-glyceraldehyde 3-phosphate to produce DXP. [2] [3] In addition, the molecule is involved in making thiamine (vitamin B 1) and pyridoxol (vitamin B 6). [2]
The systematic name of this enzyme class is pyruvate: d-glyceraldehyde-3-phosphate acetaldehydetransferase (decarboxylating). Other names in common use include 1-deoxy-d-xylulose-5-phosphate pyruvate-lyase (carboxylating), and DXP-synthase. This enzyme participates in biosynthesis of steroids.
DXP reductoisomerase (also known as: DXR, DOXP reductoisomerase, IspC, MEP synthase), is a key enzyme in the MEP pathway. It can be inhibited by the natural product fosmidomycin , which is under study as a starting point to develop a candidate antibacterial or antimalarial drug.
In Arabidopsis thaliana 1-deoxy-D-xylulose 5-phosphate reductoisomerase is the first committed enzyme of the MEP pathway for isoprenoid precursor biosynthesis. The enzyme requires Mn 2+ , Co 2+ or Mg 2+ for activity, with Mn 2+ being most effective.
D-Xylulose 5-phosphate (D-xylulose-5-P) is an intermediate in the pentose phosphate pathway. It is a ketose sugar formed from ribulose-5-phosphate by ribulose-5-phosphate epimerase. In the non-oxidative branch of the pentose phosphate pathway, xylulose-5-phosphate acts as a donor of two-carbon ketone groups in transketolase reactions.
2,5-diamino-6-(ribosylamino)-4(3H)-pyrimidinone 5'-phosphate reductase (EC 1.1.1.302, 2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate reductase, MjaRED, MJ0671 (gene)) is an enzyme with systematic name 2,5-diamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one:NAD(P) + oxidoreductase. [1] [2] This enzyme catalyses the following ...
Mevalonate diphosphate decarboxylase also has a phosphate-binding loop (‘P-loop’) where amino acid residues provide key interactions that stabilize the nucleotide triphosphoryl moiety. [9] The residues from the P-loop are conserved across enzymes in the GHMP kinase family and include Ala-105, Ser-106, Ser-107 and Ala-108.
The insecticide fosthietan is a phosphoramidate. In organophosphorus chemistry, phosphoramidates (sometimes also called amidophosphates) are a class of phosphorus compounds structurally related to phosphates (or organophosphates) via the substitution of an −O − group for an amine group (−N−).