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  • Title: Purification and properties of a methanol-oxidizing enzyme in Pseudomonas C.
    Author: Goldberg I.
    Journal: Eur J Biochem; 1976 Mar 16; 63(1):233-40. PubMed ID: 4314.
    Abstract:
    A methanol-oxidizing enzyme has been purified from Pseudomonas C, grown on methanol as a sole source for carbon and energy. The purification procedure involved ammonium sulphate precipitation, ion-exchange chromatography and gel filtration and resulted in a yield of 35.4%. Enzyme activity can be coupled to phenazine methosulfate and requires the presence of ammonium ions in the assay mixtures. The enzymes possesses a broad specificity for primary alcohols. Formaldehyde is also oxidized by the purified enzyme. The Km value for methanol is 15 muM. The optimum pH for the oxidation of both methanol and formaldehyde is about 10.4. The enzyme has a molecular weight of about 128000 and consists of two subunits each having a molecular weight of 60000.
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