Abstract
Arima, Kei (University of Tokyo, Tokyo, Japan) and Yasuo Kobayashi. Bacterial oxidation of dipicolinic acid. I. Isolation of microorganisms, their culture conditions, and end products. J. Bacteriol. 84:759–764. 1962.—In a study of the metabolic pathway(s) of dipicolinic acid (DPA) in microorganisms, 436 strains of soil microorganisms were isolated by use of an enrichment culture technique. Most of them were bacteria, and one of them, Achromobacter, which had the strongest DPA-oxidizing activity, was used for the following experiments. In DPA-free medium, the enzymes which oxidize DPA were not produced. The best culture condition for enzyme production and cell growth was: Nutrient Broth supplemented with 0.1% DPA, 30 C, and 20 hr of shake culture. End products were oxalic acid, NH3, and CO2. Oxalic acid was not oxidized further by this bacterium. The over-all reaction equation of DPA oxidation was determined.
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