title: Anammox revisited: thermodynamic considerations in early studies of the microbial nitrogen cycle.
abstract: This paper explores the early literature on the thermodynamics of processes in the microbial nitrogen cycle, evaluating parameters of transfer of energy which depends on the initial and final states of the system, the mechanism of the reactions involved and the rates of these reactions. Processes discussed include the anaerobic oxidation of ammonium (the anammox reaction), the use of inorganic nitrogen compounds as electron donors for anoxygenic photosynthesis, and the mechanism and bioenergetics of biological nitrogen fixation.
authors.affiliation: Department of Plant and Environmental Sciences, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 91904 Jerusalem, Israel aharon.oren@mail.huji.ac.il.
authors.forename: Aharon
authors.initials: A
authors.lastname: Oren
mesh_terms: D064751:Ammonium Compounds / Q000378:metabolism*; D000693:Anaerobiosis; D001419:Bacteria / Q000378:metabolism*; D052837:Chemoautotrophic Growth; D004734:Energy Metabolism; D009573:Nitrites / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D058458:Nitrogen Cycle; D009586:Nitrogen Fixation; D010084:Oxidation-Reduction; D061328:Planctomycetales / Q000378:metabolism*; D000644:Quaternary Ammonium Compounds / Q000378:metabolism; D013816:Thermodynamics
chemical_list: D064751:Ammonium Compounds; D009573:Nitrites; D000644:Quaternary Ammonium Compounds; D009584:Nitrogen
keywords: anammox; history; nitrogen cycle; nitrogen fixation; thermodynamics