Evolution of molybdenum nitrogenase during the transition from anaerobic to aerobic metabolism

Journal of Bacteriology
Eric S BoydJohn W Peters

Abstract

Molybdenum nitrogenase (Nif), which catalyzes the reduction of dinitrogen to ammonium, has modulated the availability of fixed nitrogen in the biosphere since early in Earth's history. Phylogenetic evidence indicates that oxygen (O2)-sensitive Nif emerged in an anaerobic archaeon and later diversified into an aerobic bacterium. Aerobic bacteria that fix N2 have adapted a number of strategies to protect Nif from inactivation by O2, including spatial and temporal segregation of Nif from O2 and respiratory consumption of O2. Here we report the complement of Nif-encoding genes in 189 diazotrophic genomes. We show that the evolution of Nif during the transition from anaerobic to aerobic metabolism was accompanied by both gene recruitment and loss, resulting in a substantial increase in the number of nif genes. While the observed increase in the number of nif genes and their phylogenetic distribution are strongly correlated with adaptation to utilize O2 in metabolism, the increase is not correlated with any of the known O2 protection mechanisms. Rather, gene recruitment appears to have been in response to selective pressure to optimize Nif synthesis to meet fixed N demands associated with aerobic productivity and to more efficiently ...Continue Reading

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Citations

Mar 31, 2015·Environmental Microbiology Reports·Eric S Boyd
Jun 1, 2016·Microbiological Research·Beatrycze Nowicka, Jerzy Kruk
Jul 14, 2016·Proceedings of the National Academy of Sciences of the United States of America·Yuhua ZhanMin Lin
May 20, 2016·PloS One·Sharon L DotyThomas H DeLuca
Feb 28, 2018·Journal of Bacteriology·Saroj PoudelEric S Boyd
Dec 19, 2017·Frontiers in Plant Science·Simon ArragainCarlos Echavarri-Erasun
May 1, 2018·Environmental Microbiology·Kathryn R FixenCaroline S Harwood
Apr 17, 2016·Applied and Environmental Microbiology·Florence MusJohn W Peters
Feb 6, 2020·Chembiochem : a European Journal of Chemical Biology·Qin Li, Sanfeng Chen
Mar 9, 2019·International Journal of Molecular Sciences·Qin LiSanfeng Chen
Dec 18, 2019·Nature Microbiology·Min-Hyung RyuChristopher A Voigt
Jul 22, 2017·Frontiers in Microbiology·Katharine J ThompsonSean A Crowe
Aug 24, 2019·MicrobiologyOpen·Lisa DemtröderBernd Masepohl
Aug 21, 2018·Frontiers in Microbiology·Saroj PoudelEric S Boyd
Jan 30, 2019·Nature Communications·Paula B Matheus CarnevaliJillian F Banfield
Nov 23, 2017·Frontiers in Microbiology·Pedro J Cabello-YevesFrancisco Rodriguez-Valera
Jan 25, 2020·Chemical Reviews·Stefan BurénLuis M Rubio
Mar 17, 2020·Chemical Reviews·Lance C SeefeldtBrian M Hoffman
Oct 18, 2020·Journal of Inorganic Biochemistry·Derek F HarrisLance C Seefeldt
Feb 9, 2019·Free Radical Biology & Medicine·Florence MusEric S Boyd
Jun 22, 2021·Frontiers in Plant Science·Nitika SandhuParveen Chhuneja

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