[HTML][HTML] Toxicity of glutathione-binding metals: a review of targets and mechanisms

FM Rubino - Toxics, 2015‏ - mdpi.com
Mercury, cadmium, arsenic and lead are among priority metals for toxicological studies due
to the frequent human exposure and to the significant burden of disease following acute and …

[HTML][HTML] Overview of structurally homologous flavoprotein oxidoreductases containing the low Mr thioredoxin reductase-like fold–A functionally diverse group

M Hammerstad, HP Hersleth - Archives of biochemistry and biophysics, 2021‏ - Elsevier
Structural studies show that enzymes have a limited number of unique folds, although
structurally related enzymes have evolved to perform a large variety of functions. In this …

The mercury resistance operon: from an origin in a geothermal environment to an efficient detoxification machine

ES Boyd, T Barkay - Frontiers in microbiology, 2012‏ - frontiersin.org
Mercuric mercury (Hg [II]) is a highly toxic and mobile element that is likely to have had a
pronounced and adverse effect on biology since Earth's oxygenation∼ 2.4 billion years ago …

Expanded Diversity and Phylogeny of mer Genes Broadens Mercury Resistance Paradigms and Reveals an Origin for MerA Among Thermophilic Archaea

CA Christakis, T Barkay, ES Boyd - Frontiers in microbiology, 2021‏ - frontiersin.org
Mercury (Hg) is a highly toxic element due to its high affinity for protein sulfhydryl groups,
which upon binding, can destabilize protein structure and decrease enzyme activity …

Mass dependent stable isotope fractionation of mercury during mer mediated microbial degradation of monomethylmercury

K Kritee, T Barkay, JD Blum - Geochimica et Cosmochimica Acta, 2009‏ - Elsevier
Controlling bioaccumulation of toxic monomethylmercury (MMHg) in aquatic food chains
requires differentiation between biotic and abiotic pathways that lead to its production and …

Arsinothricin Biosynthesis Involving a Radical SAM Enzyme for Noncanonical SAM Cleavage and C–As Bond Formation

Y Yao, J He, F Chen, M Dong - Journal of the American Chemical …, 2024‏ - ACS Publications
Arsinothricin is a potent antibiotic secreted by soil bacteria. The biosynthesis of arsinothricin
was proposed to involve a C–As bond formation between trivalent As and the 3-amino-3 …

A thermophilic bacterial origin and subsequent constraints by redox, light and salinity on the evolution of the microbial mercuric reductase

T Barkay, K Kritee, E Boyd… - Environmental …, 2010‏ - Wiley Online Library
Mercuric reductase (MerA) is central to the mercury (Hg) resistance (mer) system, catalyzing
the reduction of ionic Hg to volatile Hg (0). A total of 213 merA homologues were identified in …

Building on a theme: The redox hierarchy of pyridine nucleotide-disulfide oxidoreductases

MM Smith, GR Moran - Archives of Biochemistry and Biophysics, 2024‏ - Elsevier
Flavin disulfide reductases (FDRs) are FAD-dependent enzymes that transmit electrons from
NAD (P) H to reduce specific oxidant substrate disulfides. These enzymes have been …

Horizontal gene transfer of the Mer operon is associated with large effects on the transcriptome and increased tolerance to mercury in nitrogen-fixing bacteria

A Bhat, R Sharma, K Desigan, MM Lucas, A Mishra… - BMC microbiology, 2024‏ - Springer
Abstract Background Mercury (Hg) is highly toxic and has the potential to cause severe
health problems for humans and foraging animals when transported into edible plant parts …

Microbial stable isotope fractionation of mercury: A synthesis of present understanding and future directions

K Kritee, JD Blum, JR Reinfelder, T Barkay - Chemical Geology, 2013‏ - Elsevier
Mercury (Hg) is a trace metal with potentially serious public health consequences, especially
when its neurotoxic form, monomethylmercury (MMHg), accumulates in aquatic and …