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Title: Electron Bifurcation Makes the Puzzle Pieces Fall Energetically into Place in Methanogenic Energy Conservation

Journal Article · · ChemBioChem: a European journal of chemical biology
ORCiD logo [1]; ORCiD logo [2]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States). Biosciences Center
  2. Washington State Univ., Pullman, WA (United States). Inst. of Biological Chemistry

Microbial life has evolved a wide range of metabolisms exploiting in many cases unanticipated suites of oxidation-reduction reactions to generate energy. Although many of these suites of reactions don't allow these microbes to enjoy the same quality of energetic life that we enjoy via respiration/oxidative phosphorylation, it has conferred the ability for life to exploit almost any oxidation-reduction reaction. We find in many of these cases when energy is sparing, the difference between life and death may be conserving the maximal amount of energy and minimizing loss of free energy through heat.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Biological Electron Transfer and Catalysis (BETCy)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC36-08GO28308; SC0012518
OSTI ID:
1405273
Alternate ID(s):
OSTI ID: 1407814
Report Number(s):
NREL/JA-2700-70292
Journal Information:
ChemBioChem: a European journal of chemical biology, Vol. 18, Issue 23; ISSN 1439-4227
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

References (18)

Mechanism for electron transfer within and between proteins journal October 2003
Methanogenic archaea: ecologically relevant differences in energy conservation journal June 2008
Methanobacillus omelianskii, a symbiotic association of two species of bacteria journal January 1967
Insights into Flavin-based Electron Bifurcation via the NADH-dependent Reduced Ferredoxin:NADP Oxidoreductase Structure journal July 2015
A Ferredoxin- and F 420 H 2 -Dependent, Electron-Bifurcating, Heterodisulfide Reductase with Homologs in the Domains Bacteria and Archaea journal February 2017
VhuD Facilitates Electron Flow from H2 or Formate to Heterodisulfide Reductase in Methanococcus maripaludis journal September 2013
Mechanistic insights into energy conservation by flavin-based electron bifurcation journal April 2017
Electron Bifurcation: Thermodynamics and Kinetics of Two-Electron Brokering in Biological Redox Chemistry journal August 2017
Methanogenic heterodisulfide reductase (HdrABC-MvhAGD) uses two noncubane [4Fe-4S] clusters for reduction journal August 2017
Heterodisulfide reductase from Methanothermobacter marburgensis contains an active-site [4Fe-4S] cluster that is directly involved in mediating heterodisulfide reduction journal January 2002
Protein complexing in a methanogen suggests electron bifurcation and electron delivery from formate to heterodisulfide reductase journal June 2010
The protonmotive Q cycle: A general formulation journal November 1975
Hydrogenases from Methanogenic Archaea, Nickel, a Novel Cofactor, and H 2 Storage journal June 2010
Energy conservation via electron bifurcating ferredoxin reduction and proton/Na+ translocating ferredoxin oxidation journal February 2013
Studies on the Mechanism of Electron Bifurcation Catalyzed by Electron Transferring Flavoprotein (Etf) and Butyryl-CoA Dehydrogenase (Bcd) of Acidaminococcus fermentans journal December 2013
The FlxABCD-HdrABC proteins correspond to a novel NADH dehydrogenase/heterodisulfide reductase widespread in anaerobic bacteria and involved in ethanol metabolism in D esulfovibrio vulgaris  Hildenborough : Role of FlxABCD-HdrABC in journal January 2015
Bathocuproine-assisted reduction of copper(II) by human albumin journal February 2000
Novel structure and redox chemistry of the prosthetic groups of the iron-sulfur flavoprotein sulfide dehydrogenase from Pyrococcus furiosus; evidence for a [2Fe-2S] cluster with Asp(Cys)3 ligands journal August 2000

Cited By (3)