Rnf and Fix Have Specific Roles during Aerobic Nitrogen Fixation in Azotobacter vinelandii
Alexander B. Alleman, Amaya García Costas, Florence Mus, John W. Peters
Abstract
The availability of fixed nitrogen is critical for life in many ecosystems, from extreme environments to agriculture. Due to the energy demands of biological nitrogen fixation, organisms must tailor their metabolism during diazotrophic growth to deliver the energy requirements to nitrogenase in the form of ATP and low potential electrons. Therefore, a complete understanding of diazotrophic energy metabolism and redox homeostasis is required to understand the impact on ecological communities or to promote crop growth in agriculture through engineered diazotrophs.
Topics & Concepts
Azotobacter vinelandiiDiazotrophNitrogen fixationNitrogenaseAzotobacterNitrogenNitrogen cycleFixation (population genetics)Energy metabolismEcosystemBiologyChemistryEcologyBiochemistryBacteriaGeneticsOrganic chemistryGeneEndocrinologyMetalloenzymes and iron-sulfur proteinsAmmonia Synthesis and Nitrogen ReductionWastewater Treatment and Nitrogen Removal