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Wiley, FEBS Letters, 1(414), p. 45-49, 1997

DOI: 10.1016/s0014-5793(97)00968-x

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The assimilatory nitrate reductase from the phototrophic bacterium,Rhodobacter capsulatusE1F1, is a flavoprotein

Journal article published in 1997 by R. Blasco ORCID, F. Castillo, M. Martı́nez-Luque
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The assimilatory nitrate reductase from the phototrophic bacterium Rhodobacter capsulatus has been purified to electrophoretic homogeneity and its molecular and kinetic parameters determined. The native nitrate reductase is a dimer of 144 kDa composed of two subunits of 46 and 95 kDa. The purified enzyme catalyzes the electron transfer from NADH, reduced bromophenol blue or reduced viologens to nitrate. The nitrate reductase contains 1 mol FAD per mole of enzyme and also reduces cytochrome c or dichlorophenol indophenol with NADH as the electron donor. The diaphorase activity is located in the small subunit.