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.2010 Aug 6;329(5992):642.
doi: 10.1126/science.1191455.

Vanadium nitrogenase reduces CO

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Vanadium nitrogenase reduces CO

Chi Chung Lee et al. Science..

Abstract

Vanadium nitrogenase not only reduces dinitrogen to ammonia but also reduces carbon monoxide to ethylene, ethane, and propane. The parallelism between the two reactions suggests a potential link in mechanism and evolution between the carbon and nitrogen cycles on Earth.

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Fig. 1
Fig. 1
CO-reducing activity of V-nitrogenase. Time-courses of C2H4 (A, upper), C2H6 (B, upper), and C3H8 (C, upper) formation by V- (-formula image-) and Mo- (-●-) nitrogenases in the presence of 100% CO [Data are presented as the means ± SD (N = 5).]; and GC-MS analysis of C2H4 (A, lower), C2H6 (B, lower), and C3H8 (C, lower) formed by V- (red lines) and Mo- (black lines) nitrogenases in the presence of 100% CO. The products were analyzed with12CO or13CO as the substrate and traced at the followingm/z (lower panels): A,1 and A,2: 28.031; A,3 and A,4: 30.047; B,1 and B,2: 30.047; B,3 and B,4: 32.054; C,1 and C,2: 44.062; C,3 and C,4: 47.073.
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References

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    1. Alternative substrates of Mo-nitrogenase include alkynes, cyanides, nitriles and nitrogen oxides; whereas alternative substrates of V-nitrogenase have not been studied extensively (4).

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