Nutritional factors that affect the formation of 5-aminolevulinic acid, a key intermediate of heme biosynthesis
Journal of Nutritional Science and Vitaminology, ISSN: 1881-7742, Vol: 67, Issue: 5, Page: 339-350
2021
- 3Citations
- 4Captures
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Metrics Details
- Citations3
- Citation Indexes3
- CrossRef2
- Captures4
- Readers4
Article Description
5-Aminolevulinic acid (ALA) is a key intermediate of heme biosynthesis, which is an essential component of the respiratory chain. Therefore, nutrients that affect ALA biosynthesis eventually affect ATP production, which is the basis of mitochondrial function. Although the effects of various non-nutrient components that affect ALA after biosynthesis have been reported, there are few reports on the effects of dietary amino acids/ protein on ALA formation and the effects of dietary vitamins that are involved in amino acid metabolism. In mitochondria, ALA is synthesized from succinyl-CoA and glycine by the pyridoxal phosphate-dependent enzyme ALA synthase [EC 2.3.1.37]. In this study, the effects of dietary amino acids/protein and vitamins on the amount of ALA synthesized were investigated using mice, rats, and cultured cells. Amounts of ALA in plasma and urine, and porphyrins in plasma increased with increasing protein intake. Vitamin B insufficiency did not affect ALA synthesis. Vitamin B insufficiency increased the amount of ALA synthesized, while niacin deficiency markedly reduced ALA synthesis. Thus, for heme syn-thesis, an essential biological substance for life, the amounts of amino acids, as well as the pathways metabolizing amino acids to glycine and succinyl-CoA are very important. Specif-ically, it is important that niacin is associated with the formation of glycine and succi-nyl-CoA from amino acids.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85120699216&origin=inward; http://dx.doi.org/10.3177/jnsv.67.339; http://www.ncbi.nlm.nih.gov/pubmed/34719620; https://www.jstage.jst.go.jp/article/jnsv/67/5/67_339/_article; https://www.jstage.jst.go.jp/article/jnsv/67/5/67_339/_article/-char/en/; https://www.jstage.jst.go.jp/article/jnsv/67/5/67_339/_article/-char/ja/; https://dx.doi.org/10.3177/jnsv.67.339
Center for Academic Publications Japan
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