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Biochemistry, Water Soluble Vitamins Article

Biotin is a coenzyme for five carboxylase enzymes, which are involved in the catabolism of amino acids and fatty acids, synthesis of fatty acids, and gluconeogenesis. [3] [4] Biotinylation of histone proteins in nuclear chromatin plays a role in chromatin stability and gene expression. [4] [7] See more Biotin (or vitamin B7) is one of the B vitamins. It is involved in a wide range of metabolic processes, both in humans and in other organisms, primarily related to the utilization of fats, carbohydrates, and amino acids. The … See more Biotin is classified as a heterocyclic compound, with a sulfur-containing ring fused ureido and tetrahydrothiophene group. A C5-carboxylic acid side chain is appended to one of the rings. The ureido ring, containing the −N−CO−N− group, serves as the … See more Biotin, synthesized in plants, is essential to plant growth and development. Bacteria also synthesize biotin, and it is thought that bacteria resident in the large intestine may synthesize … See more The enzyme holocarboxylase synthetase covalently attaches biotin to five human carboxylase enzymes: • Acetyl-CoA carboxylase alpha (ACC1) • Acetyl-CoA carboxylase beta See more The US National Academy of Medicine updated Dietary Reference Intakes for many vitamins in 1998. At that time there was insufficient … See more Biotin is a water-soluble B vitamin. Consumption of large amounts as a dietary supplement results in absorption, followed by excretion into urine as biotin. Consumption of biotin as part of a normal diet results in urinary excretion of biotin and biotin metabolites. See more Primary biotin deficiency, meaning deficiency as a consequence of too little biotin in the diet, is rare, because biotin is contained in so many foods. Subclinical deficiency can … See more WebFree online lectures on Biochemistry by Biochemistry club. Biotin. Biotin is a very important member of the B-Complex group of vitamins. Biotin was isolated in 1942 by Vincent du Vigneaud, who was awarded Nobel prize in 1955. Sources of Biotin. Normal bacterial flora of the gut provide adequate quantities of biotin. chs live stream

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Web(Biochemistry) a vitamin of the B complex, abundant in egg yolk and liver, deficiency of which causes dermatitis and loss of hair. Formula: C10H16N2O3S. See also avidin Web13.5D: Biotin is a CO 2-carrying coenzyme. Recall from section 6.5B that many enzymes are dependent upon the assistance of coenzymes, which are small (relative to protein) organic molecules that bind - covalently or non-covalently - in an enzyme's active site and help it to catalyze its reaction. S-adenosylmethionine (SAM, section 9.1A) and ATP … WebBiotin is a water-soluble vitamin and serves as a coenzyme for five carboxylases in humans. Biotin is also covalently attached to distinct lysine residues in histones, affecting chromatin structure and mediating gene regulation. This review describes mammalian biotin metabolism, biotin analysis, mar … description of currency bill