Search results
Results from the WOW.Com Content Network
Vitamin B 6 Drug class Pyridoxal 5'-phosphate, the metabolically active form of vitamin B 6 Class identifiers Use Vitamin B 6 deficiency ATC code A11H Biological target enzyme cofactor Clinical data Drugs.com International Drug Names External links MeSH D025101 Legal status In Wikidata Vitamin B 6 is one of the B vitamins, and is an essential nutrient for humans. The term essential nutrient ...
Pyridoxal phosphate (PLP, pyridoxal 5'-phosphate, P5P), the active form of vitamin B 6, is a coenzyme in a variety of enzymatic reactions. The International Union of Biochemistry and Molecular Biology has catalogued more than 140 PLP-dependent activities, corresponding to ~4% of all classified activities. [5]
Pyridoxine (PN) [4] is a form of vitamin B 6 found commonly in food and used as a dietary supplement.As a supplement it is used to treat and prevent pyridoxine deficiency, sideroblastic anaemia, pyridoxine-dependent epilepsy, certain metabolic disorders, side effects or complications of isoniazid use, and certain types of mushroom poisoning. [5]
Pyridoxine 5′-phosphate oxidase is an enzyme, encoded by the PNPO gene, [1] [2] [3] that catalyzes several reactions in the vitamin B 6 metabolism pathway. Pyridoxine 5′-phosphate oxidase catalyzes the final, rate-limiting step in vitamin B 6 metabolism, the biosynthesis of pyridoxal 5′-phosphate, the biologically active form of vitamin B 6 which acts as an essential cofactor. [4]
The enzyme pyridoxal phosphatase [1] [2] [3] (EC 3.1.3.74) catalyzes the reaction . pyridoxal 5′-phosphate + H 2 O pyridoxal + phosphate. This enzyme belongs to the family of hydrolases, specifically those acting on phosphoric monoester bonds.
Pyridoxine-5'-phosphate synthase, or pdxJ, is a TIM barrel protein, although it exhibits some departures from this motif. Most significantly, the central tunnel of pdxJ is hydrophilic in contrast to the hydrophobic central tunnel observed in most TIM barrel proteins, and pdxJ has three extra alpha helices compared to the classical TIM fold. [6]
Pyridoxal-5'-phosphate-dependent amino acid decarboxylases can be divided into four groups based on amino acid sequence. Group IV comprises eukaryotic ornithine and lysine decarboxylase and the prokaryotic biosynthetic type of arginine decarboxylase and diaminopimelate decarboxylase. [1]
Pyridoxal (PL) [3] is one form of vitamin B 6.. Some medically relevant bacteria, such as those in the genera Granulicatella and Abiotrophia, require pyridoxal for growth.This nutritional requirement can lead to the culture phenomenon of satellite growth.