Understanding the chemical bonding {in the|within the|inside the} catalytic cofactor {of the|from the|in the|on the|with the|of your} Mo nitrogenase (FeMo-co) is foundational for {building|developing|creating|constructing} a mechanistic {picture|image} of biological nitrogen fixation. A persistent obstacle in these efforts has been that the 57Fe-based spectroscopic data—although {rich|wealthy} with information—reflects all seven Fe {sites|websites|web sites|internet sites|web-sites|web pages}, and it has {therefore|consequently|as a result|for that reason|thus|hence} not been {possible|feasible|achievable|attainable|doable|probable} to map {individual|person} spectroscopic responses to {specific|particular|certain|distinct|precise} {sites|websites|web sites|internet sites|web-sites|web pages} {in the|within the|inside the} 3-D structure. We herein overcome this challenge by incorporating 57Fe into a single {site|website|web site|internet site|web-site|web page} of FeMo-co. Spectroscopic {analysis|evaluation} {of the|from the|in the|on the|with the|of your} {reduced|decreased|lowered} and oxidized {forms|types} {of the|from the|in the|on the|with the|of your} resting state {provides|offers|gives|supplies|delivers} unprecedented insights {into the|in to the} {local|nearby|neighborhood|regional} electronic structure {of the|from the|in the|on the|with the|of your} terminal (Fe1) {site|website|web site|internet site|web-site|web page}, {including|such as|which includes|like} its oxidation state and spin orientation. This {leads to|results in} the discovery that Fe1 {is a|is really a|is actually a|can be a|is often a|is usually a} {site|website|web site|internet site|web-site|web page} of redox reactivity {during|throughout|in the course of|for the duration of|through} oxidation {of the|from the|in the|on the|with the|of your} resting state, and on this basis, we {suggest|recommend} a {possible|feasible|achievable|attainable|doable|probable} {role|function|part} for Fe1 as an electron reservoir {during|throughout|in the course of|for the duration of|through} N2 reduction catalysis. 201929-84-2 web BuySilver acetate PMID:23398362
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