The pyrroloquinoline quinone synthesis genes ofGluconobacter oxydans
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چکیده
منابع مشابه
Knockout and overexpression of pyrroloquinoline quinone biosynthetic genes in Gluconobacter oxydans 621H.
In Gluconobacter oxydans, pyrroloquinoline quinone (PQQ) serves as the cofactor for various membrane-bound dehydrogenases that oxidize sugars and alcohols in the periplasm. Proteins for the biosynthesis of PQQ are encoded by the pqqABCDE gene cluster. Our reverse transcription-PCR and promoter analysis data indicated that the pqqA promoter represents the only promoter within the pqqABCDE cluste...
متن کاملThe pyrroloquinoline quinone (PQQ)-containing quinoprotein dehydrogenases.
L. (1995) Biochemistry 34, 11080-1 1089 10 Friden, H. and Hederstedt, L. (1990) Mol. Microbiol. 4, 1045-1056 1 1 Nakamura, K., Yamaki, M., Sarada, M., Nakayama, S., Vibat, C. R. T., Gennis, R. B., Nakayashiki, T., Inokuchi, H., Kojima, S. and Kita, K. (1996) J. Biol. Chem. 271, 521-527 12 Hagerhall, C. and Hederstedt, L. (1996) FEBS Lett. 389, 25-31 13 Pennoyer, J. D., Ohnishi, T. and Trumpower...
متن کاملProduction and Radioprotective Effects of Pyrroloquinoline Quinone
Pyrroloquinoline quinone (PQQ) was produced by fermentation of the Methylovorus sp. MP688 strain and purified by ion-exchange chromatography, crystallization and recrystallization. The yield of PQQ reached approximately 125 mg/L and highly pure PQQ was obtained. To determine the optimum dose of PQQ for radioprotection, three doses (2 mg/kg, 4 mg/kg, 8 mg/kg) of PQQ were orally administrated to ...
متن کاملFactors relevant in bacterial pyrroloquinoline quinone production.
Quinoprotein content and levels of external pyrroloquinoline quinone (PQQ) were determined for several bacteria under a variety of growth conditions. From these data and those from the literature, a number of factors can be indicated which are relevant for PQQ production. Synthesis of PQQ is only started if synthesis of a quinoprotein occurs, but quinoprotein synthesis does not depend on PQQ sy...
متن کاملPyrroloquinoline Quinone as Cofactor in Galactose Oxidase
Galactose oxidase from Dactylium dendroides was shown to contain one molecule of covalently bound pyrroloquinoline quinone (PQQ)/enzyme molecule. From the spectroscopic characteristics reported for the enzyme forms, a mechanistic role for PQQ could be deduced. In analogy with other quinoproteins, the initial formation of a PQQ-substrate adduct is proposed. Following internal hydrogen transfer, ...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 2000
ISSN: 0378-1097,1574-6968
DOI: 10.1111/j.1574-6968.2000.tb09429.x