| Literature DB >> 15469259 |
Amandeep K Sra1, Yilin Hu, Glen E Martin, Daniel D Snow, Markus W Ribbe, Amnon Kohen.
Abstract
Biological N2 fixation is achieved under ambient conditions by enzymatic catalysis. The enzyme nitrogenase has been studied extensively, but the N2 chemical reduction step is, by far, not rate limiting and hard to examine. A new method was developed that allows studying the reduction transition state within the enzyme's complex kinetic cascade by means of the 15N kinetic isotope effect on the reaction's second-order rate constant, V/K. A value of 1.7% +/- 0.2% was measured.Entities:
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Year: 2004 PMID： 15469259 DOI： 10.1021/ja0458470
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419