Results 41 to 50 of about 1,726 (150)

Acetylene Fuels TCE Reductive Dechlorination by Defined Dehalococcoides/Pelobacter Consortia. [PDF]

open access: yes, 2017
Acetylene (C2H2) can be generated in contaminated groundwater sites as a consequence of chemical degradation of trichloroethene (TCE) by in situ minerals, and C2H2 is known to inhibit bacterial dechlorination. In this study, we show that while high C2H2 (
Alvarez-Cohen, Lisa   +6 more
core   +2 more sources

Is the Hyporheic Zone Relevant beyond the Scientific Community? [PDF]

open access: yes, 2019
Rivers are important ecosystems under continuous anthropogenic stresses. The hyporheic zone is a ubiquitous, reactive interface between the main channel and its surrounding sediments along the river network. We elaborate on the main physical, biological,
Arnon, Shai   +9 more
core   +1 more source

A comprehensive estimate for loss of atmospheric carbon tetrachloride (CCl4) to the ocean [PDF]

open access: yes, 2016
© The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Atmospheric Chemistry and Physics 16 (2016): 10899-10910, doi:10.5194/acp-16-10899-2016.Extensive ...
Bullister, John L.   +10 more
core   +3 more sources

Electronic structure and correlations of vitamin B12 studied within the Haldane-Anderson impurity model [PDF]

open access: yes, 2015
We study the electronic structure and correlations of vitamin B12 (cyanocobalamine) by using the framework of the multi-orbital single-impurity Haldane-Anderson model of a transition-metal impurity in a semiconductor host. The parameters of the effective
Bulut, Nejat   +2 more
core   +2 more sources

Porphyrin and corrinoid mutants of Bacillus subtilis [PDF]

open access: yesJournal of Bacteriology, 1977
Porphyrin auxotrophs of Bacillus subtilis can be divided into two groups. Strains belonging to the first group (hemA, hemB, or hemC) are not able to synthesize or metabolize porphobilinogen. These strains require cysteine, cystine, and methionine, respectively.
openaire   +2 more sources

Redox, haem and CO in enzymatic catalysis and regulation [PDF]

open access: yes, 2012
The present paper describes general principles of redox catalysis and redox regulation in two diverse systems. The first is microbial metabolism of CO by the Wood–Ljungdahl pathway, which involves the conversion of CO or H2/CO2 into acetyl-CoA, which ...
Bender, Güneş   +17 more
core   +1 more source

Geochemical and microbial community determinants of reductive dechlorination at a site biostimulated with glycerol [PDF]

open access: yes, 2016
Biostimulation is widely used to enhance reductive dechlorination of chlorinated ethenes in contaminated aquifers. However, the knowledge on corresponding biogeochemical responses is limited. In this study glycerol was injected in an aquifer contaminated
Abelson   +97 more
core   +2 more sources

Reductive dechlorination in the energy metabolism of anaerobic bacteria [PDF]

open access: yes, 2017
Within the last few decades, several anaerobic bacteria have been isolated which are able to reductively dechlorinate chlorinated aliphatic and aromatic compounds at catabolic rates.
Diekert, Gabriele   +2 more
core  

The crystal structure of the C-terminal domain of the salmonella enterica pduo protein: An old fold with a new heme-binding mode [PDF]

open access: yes, 2016
The two-domain protein PduO, involved in 1,2-propanediol utilization in the pathogenic Gram-negative bacterium Salmonella enterica is an ATP:Cob(I)alamin adenosyltransferase, but this is a function of the N-terminal domain alone.
de Oru\ue9 Lucana, Dar\uedo Ortiz   +6 more
core   +1 more source

Sinorhizobium meliloti requires a cobalamin-dependent ribonucleotide reductase for symbiosis with its plant host [PDF]

open access: yes, 2010
Vitamin B[subscript 12] (cobalamin) is a critical cofactor for animals and protists, yet its biosynthesis is limited to prokaryotes. We previously showed that the symbiotic nitrogen-fixing alphaproteobacterium Sinorhizobium meliloti requires cobalamin to
Abbas B. A.   +5 more
core   +1 more source

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