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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Production of L-serine by Sarcina albida.

Conditions for the production of microbial L-serine hydroxymethyltransferase and for the conversion of glycine to L-serine were studied. A number of microorganisms were screened for their abilities to form and accululate L-serine from glycine, and Sarcina albida was selected as the best organism. Enzyme activity in this organism as high as 0.12 U/ml could be produced in shaken cultures at 30 degrees C in a medium containing glucose, ammonium sulfate, glycine, yeast extract, and inorganic salts. L-Serine was produced most efficiently by shaking cells at 30 degrees C in a reaction mixture containing 20% glycine, 5 X 10(-3) M formaldehyde, and 3 X 10(-4) M pyridoxal phosphate in yields of 22 mg of broth in 5 days. L-Serine was easily isolated in 84% yields by ion-exchange resin.[1]


  1. Production of L-serine by Sarcina albida. Ema, M., Kakimoto, T., Chibata, I. Appl. Environ. Microbiol. (1979) [Pubmed]
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