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Biological Chemistry

Editor-in-Chief: Brüne, Bernhard

Editorial Board: Buchner, Johannes / Lei, Ming / Ludwig, Stephan / Sies, Helmut / Thomas, Douglas D. / Turk, Boris / Wittinghofer, Alfred

12 Issues per year

IMPACT FACTOR 2017: 3.022

CiteScore 2017: 2.81

SCImago Journal Rank (SJR) 2017: 1.562
Source Normalized Impact per Paper (SNIP) 2017: 0.705

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Volume 383, Issue 7-8


Inhibition of Arginine Gingipains (RgpB and HRgpA) with Benzamidine Inhibitors: Zinc Increases Inhibitory Potency

J. A. Krauser / J. Potempa / J. Travis / J. C. Powers
Published Online: 2005-06-01 | DOI: https://doi.org/10.1515/BC.2002.131


We assayed several benzamidine derivatives for inhibition potency with HRgpA and RgpB gingipains, enzymes which are involved in the pathogenesis of gingivitis and periodontal disease. The benzamidine derivatives proved to be effective inhibitors of HRgpA and RgpB, with the best inhibitor being a bisbenzamidine with a urea linker (Ki=30 M). The inhibition potency was increased 2 3 fold in the presence of low concentrations of zinc with the benzamidines containing a urea moiety linking the two aromatic rings. We propose an inhibition model involving a tetrahedral zinc atom coordinated with the active site Cys and His of gingipain and the urea linker in the benzamidine inhibitor. In summary, we have discovered a new series of effective inhibitors for the gingipains and found a novel way to increase inhibitor potency with the HRgpA and RgpB gingipains using zinc.

About the article

Published Online: 2005-06-01

Published in Print: 2002-08-27

Citation Information: Biological Chemistry, Volume 383, Issue 7-8, Pages 1193–1198, ISSN (Print) 1431-6730, DOI: https://doi.org/10.1515/BC.2002.131.

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