NDLI: Activation of Methanogenesis by Cadmium in the Marine Archaeon Methanosarcina acetivorans

Content Provider	PubMed Central
Author	Elizabeth, Lira-silva Santiago-martínez, M. Geovanni Hernández-juárez, Viridiana Rodolfo, García-contreras Rafael, Moreno-sánchez Ricardo, Jasso-chávez
Editor	Lau, Andy T. Y.
Copyright Year	2012
Abstract	Methanosarcina acetivorans was cultured in the presence of CdCl2 to determine the metal effect on cell growth and biogas production. With methanol as substrate, cell growth and methane synthesis were not altered by cadmium, whereas with acetate, cadmium slightly increased both, growth and methane rate synthesis. In cultures metabolically active, incubations for short-term (minutes) with 10 µM total cadmium increased the methanogenesis rate by 6 and 9 folds in methanol- and acetate-grown cells, respectively. Cobalt and zinc but not copper or iron also activated the methane production rate. Methanogenic carbonic anhydrase and acetate kinase were directly activated by cadmium. Indeed, cells cultured in 100 µM total cadmium removed 41–69% of the heavy metal from the culture and accumulated 231–539 nmol Cd/mg cell protein. This is the first report showing that (i) Cd2+ has an activating effect on methanogenesis, a biotechnological relevant process in the bio-fuels field; and (ii) a methanogenic archaea is able to remove a heavy metal from aquatic environments.
Related Links	http://dx.doi.org/10.1371/journal.pone.0048779
Starting Page	48779
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	11
Volume Number	7
Language	English
Publisher	Public Library of Science
Publisher Date	2012-11-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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Characterization of the RnfB and RnfG Subunits of the Rnf Complex from the Archaeon Methanosarcina acetivorans

Nitrite-Reductase and Peroxynitrite Isomerization Activities of Methanosarcina acetivorans Protoglobin

Structure and Haem-Distal Site Plasticity in Methanosarcina acetivorans Protoglobin

Structural Bases for the Regulation of CO Binding in the Archaeal Protoglobin from Methanosarcina acetivorans

Marine Archaeon Methanosarcina acetivorans Enhances Polyphosphate Metabolism Under Persistent Cadmium Stress

Ligation Tunes Protein Reactivity in an Ancient Haemoglobin: Kinetic Evidence for an Allosteric Mechanism in Methanosarcina acetivorans Protoglobin

Electron Transport in the Pathway of Acetate Conversion to Methane in the Marine Archaeon Methanosarcina acetivorans †

Activation of Methanogenesis in Arid Biological Soil Crusts Despite the Presence of Oxygen

A Heme-based Redox Sensor in the Methanogenic Archaeon Methanosarcina acetivorans *

Activation of Methanogenesis by Cadmium in the Marine Archaeon Methanosarcina acetivorans

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