The Fe Protein: An Unsung Hero of Nitrogenase
AbstractAlthough the nitrogen-fixing enzyme nitrogenase critically requires both a reductase component (Fe protein) and a catalytic component, considerably more work has focused on the latter species. Properties of the catalytic component, which contains two highly complex metallocofactors and catalyzes the reduction of N2 into ammonia, understandably making it the “star” of nitrogenase. However, as its obligate redox partner, the Fe protein is a workhorse with multiple supporting roles in both cofactor maturation and catalysis. In particular, the nitrogenase Fe protein utilizes nucleotide binding and hydrolysis in concert with electron transfer to accomplish several tasks of critical importance. Aside from the ATP-coupled transfer of electrons to the catalytic component during substrate reduction, the Fe protein also functions in a maturase and insertase capacity to facilitate the biosynthesis of the two-catalytic component metallocofactors: fusion of the [Fe8S7] P-cluster and insertion of Mo and homocitrate to form the matured [(homocitrate)MoFe7S9C] M-cluster. These and key structural-functional relationships of the indispensable Fe protein and its complex with the catalytic component will be covered in this review. View Full-Text
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Jasniewski, A.J.; Sickerman, N.S.; Hu, Y.; Ribbe, M.W. The Fe Protein: An Unsung Hero of Nitrogenase. Inorganics 2018, 6, 25.
Jasniewski AJ, Sickerman NS, Hu Y, Ribbe MW. The Fe Protein: An Unsung Hero of Nitrogenase. Inorganics. 2018; 6(1):25.Chicago/Turabian Style
Jasniewski, Andrew J.; Sickerman, Nathaniel S.; Hu, Yilin; Ribbe, Markus W. 2018. "The Fe Protein: An Unsung Hero of Nitrogenase." Inorganics 6, no. 1: 25.
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