{"title":"Vitamin B-6 (Pyridoxine)","authors":"Howerde E. Sauberlich","doi":"10.1201/9780203749647-5","DOIUrl":null,"url":null,"abstract":"All forms except pyridoxic acid[2] and pyritinol can be interconverted. Absorbed pyridoxamine is converted to PMP by pyridoxal kinase, which is further converted to PLP by pyridoxamine-phosphate transaminase or pyridoxine 5′-phosphate oxidase which also catalyzes the conversion of PNP to PLP. Pyridoxine 5′-phosphate oxidase is dependent on flavin mononucleotide (FMN) as a cofactor which is produced from riboflavin (vitamin B2) i.e. in this biochemical pathway, dietary vitamin B6 cannot be used without vitamin B2.","PeriodicalId":346699,"journal":{"name":"Laboratory Tests for the Assessment of Nutritional Status","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Laboratory Tests for the Assessment of Nutritional Status","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1201/9780203749647-5","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
All forms except pyridoxic acid[2] and pyritinol can be interconverted. Absorbed pyridoxamine is converted to PMP by pyridoxal kinase, which is further converted to PLP by pyridoxamine-phosphate transaminase or pyridoxine 5′-phosphate oxidase which also catalyzes the conversion of PNP to PLP. Pyridoxine 5′-phosphate oxidase is dependent on flavin mononucleotide (FMN) as a cofactor which is produced from riboflavin (vitamin B2) i.e. in this biochemical pathway, dietary vitamin B6 cannot be used without vitamin B2.
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