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Zeitschrift für Naturforschung C

A Journal of Biosciences

Editor-in-Chief: Seibel, Jürgen

Editorial Board: Aigner , Achim / Boland, Wilhelm / Bornscheuer, Uwe / Hoffmann, Klaus

12 Issues per year


IMPACT FACTOR 2017: 0.882
5-year IMPACT FACTOR: 0.912

CiteScore 2017: 0.92

SCImago Journal Rank (SJR) 2017: 0.288
Source Normalized Impact per Paper (SNIP) 2017: 0.448

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1865-7125
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Volume 34, Issue 7-8

Issues

Inhibition of the Nitrate Reductase Complex by Dibromothymoquinone

N. Jawali / J. Ramakrishna / J. K. Sainis / P. V. Sane
Published Online: 2014-06-02 | DOI: https://doi.org/10.1515/znc-1979-7-806

The plastoauinone antagonist 2,5-dibromothymoquinone was found to inhibit NO3- reduction from NADH by the nitrate reductase complex from wheat. It accepts electrons from NADH through the NADH dehydrogenase activity of the nitrate reductase. However, it does not inhibit the reduction of 2,6-dichlorophenol-indophenol by the enzyme. This suggests that the two com­pounds may be accepting electrons at different places from the enzyme. Further it was observed that reduced DCIP could be oxidized by DBMIB in the absence of NADH indicating that the electron flow in the nitrate reductase complex may take place in a unidirectional way.

Keywords: Nitrate Reductase Complex; Dibromo|thymoquinone; Inhibition; Electron Acceptors

About the article

Received: 1979-04-18

Published Online: 2014-06-02

Published in Print: 1979-08-01


Citation Information: Zeitschrift für Naturforschung C, Volume 34, Issue 7-8, Pages 529–532, ISSN (Online) 1865-7125, ISSN (Print) 0939-5075, DOI: https://doi.org/10.1515/znc-1979-7-806.

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© 1946 – 2014: Verlag der Zeitschrift für Naturforschung. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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[1]
N. Jawali and P.V. Sane
FEBS Letters, 1983, Volume 158, Number 2, Page 213

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