enzymology Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products. A ...

, a phloroglucinol reductase () is an enzyme that

catalyzes Catalysis () is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst (). Catalysts are not consumed in the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recyc ...

the chemical reaction :dihydrophloroglucinol + NADP⁺

\rightleftharpoons

phloroglucinol + NADPH + H⁺ Thus, the two substrates of this enzyme are

dihydrophloroglucinol Dihydrophloroglucinol is a chemical compound found in the pathway of the microbial degradation of phloroglucinol and other phenolic compounds. The enzyme phloroglucinol reductase uses dihydrophloroglucinol and NADP+ to produce phloroglucinol, ...

and NADP⁺, whereas its 3 products are phloroglucinol,

NADPH Nicotinamide adenine dinucleotide phosphate, abbreviated NADP or, in older notation, TPN (triphosphopyridine nucleotide), is a cofactor used in anabolic reactions, such as the Calvin cycle and lipid and nucleic acid syntheses, which require NAD ...

, and H⁺. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-CH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is dihydrophloroglucinol:NADP+ oxidoreductase. This enzyme participates in benzoate degradation via coa ligation.

References

* EC 1.3.1 NADPH-dependent enzymes Enzymes of unknown structure {{1.3-enzyme-stub