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    J Bacteriol. 2008 Jan;190(2):772-6. Epub 2007 Nov 2.

    A novel caffeine dehydrogenase in Pseudomonas sp. strain CBB1 oxidizes caffeine to trimethyluric acid.

    Yu CL, Kale Y, Gopishetty S, Louie TM, Subramanian M.

    Source

    Center for Biocatalysis & Bioprocessing, The University of Iowa, Oakdale Research Park, 2501 Crosspark Road, Suite C100, Coralville, IA 52241, USA.

    Abstract

    A unique heterotrimeric caffeine dehydrogenase was purified from Pseudomonas sp. strain CBB1. This enzyme oxidized caffeine to trimethyluric acid stoichiometrically and hydrolytically, without producing hydrogen peroxide. The enzyme was not NAD(P)(+) dependent; coenzyme Q(0) was the preferred electron acceptor. The enzyme was specific for caffeine and theobromine and showed no activity with xanthine.

    PMID:
    17981969
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2223706
    Free PMC Article

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