Enzymatic Synthesis of (S)-Phenylalanine and Related (S)-Amino Acids by Phenylalanine Dehydrogenase
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Phenylalanine dehydrogenase (L-phenylalanine: NAD+ oxidoreductase, deaminating [EC 1.4.1.20], PheDH) from Bacillus sphaericus R79a, overproduced in Escherichia coli JM109/pBPDH1-DBL, is active toward 3-substituted pyruvic acids with bulky substituents in the reductive amination reaction. Optically pure (S)-phe and other (S)-amino acids are quantitatively synthesized from their oxo-analogs using PheDH, with a regeneration of NADH by formate dehydrogenase from Candida boidinii No. 2201. Acetone-dried cells of B. sphaericus R79a and C. boidinii No. 2201 are also effective for (S)-phe synthesis, providing a simple microbial method of synthesis.
![N-[2-[4-[[6-[2-[[2-(2,6-dioxopiperidin-3-yl)-1,3-dioxoisoindol-4-yl]amino]ethyl]-2-azaspiro[3.3]heptan-2-yl]methyl]cyclohexyl]-5-(2-hydroxypropan-2-yl)-1,3-benzothiazol-6-yl]-6-(trifluoromethyl)pyridine-2-carboxamide，Moligand™，阿拉丁](https://img1.dxycdn.com/p/s14/2024/0619/785/8670042233826733081.jpg!wh200)
