carboxylases

Biotin (Vitamin H) 属于天然产物，是一种 B 族维生素，具有水溶性。Biotin 参与脂肪酸产生、脂肪和氨基酸代谢以及细胞生长。Biotin 常被用于生物素标记。

(+)-Biotin 4-amidobenzoic acid is a substrate of biotinidase, which cleaves biotin amide to give biotin in vivo. Biotin is an essential coenzyme for certain carboxylases and is used to modify histones and regulate gene transcription. Biotinidase has key roles in intestinal absorption of biotin, the transport of biotin in plasma, and in the regulation of histone biotinylation. (+)-Biotin 4-amidobenzoic acid is hydrolyzed by biotinidase to release 4-aminobenzoic acid (PABA), which can be quantified by either fluorescent or colorimetric methods. This approach is used in biotinidase activity assays in newborn screening protocols to evaluate biotinidase deficiency.

Biotin (Vitamin B7) sodium 是一种水溶性维生素 B，是人体五种羧化酶的辅酶，参与脂肪酸、异亮氨酸和缬氨酸的合成，并参与糖异生。Biotin sodium 是细胞生长、脂肪酸产生以及脂肪和氨基酸代谢的必需物质。