Ronald Oremland (Former Employee)
Science and Products
Filter Total Items: 120
The genetic basis of anoxygenic photosynthetic arsenite oxidation The genetic basis of anoxygenic photosynthetic arsenite oxidation
“Photoarsenotrophy”, the use of arsenite as an electron donor for anoxygenic photosynthesis, is thought to be an ancient form of phototrophy along with the photosynthetic oxidation of Fe(II), H2S, H2, and NO2-. Photoarsenotrophy was recently identified from Paoha Island's (Mono Lake, CA) arsenic-rich hot springs. The genomes of several photoarsenotrophs revealed a gene cluster...
Authors
Jamie Hernandez-Maldonado, Benjamin Sanchez-Sedillo, Brendon Stoneburner, Alison Boren, Laurence G. Miller, Shelley McCann, Michael R. Rosen, Ronald S. Oremland, Chad W. Saltikov
Microbial antimony biogeochemistry: Enzymes, regulation, and related metabolic pathways Microbial antimony biogeochemistry: Enzymes, regulation, and related metabolic pathways
Antimony (Sb) is a toxic metalloid that occurs widely at trace concentrations in soil, aquatic systems, and the atmosphere. Nowadays, with the development of its new industrial applications and the corresponding expansion of antimony mining activities, the phenomenon of antimony pollution has become an increasingly serious concern. In recent years, research interest in Sb has been...
Authors
Jingxin Li, Qian Wang, Ronald S. Oremland, Thomas R. Kulp, Christopher Rensing, Gejiao Wang
Functional metagenomic selection of RubisCOs from uncultivated bacteria Functional metagenomic selection of RubisCOs from uncultivated bacteria
Ribulose 1,5-bisphosphate carboxylase/oxygenase (RubisCO) is a critical yet severely inefficient enzyme that catalyses the fixation of virtually all of the carbon found on Earth. Here, we report a functional metagenomic selection that recovers physiologically active RubisCO molecules directly from uncultivated and largely unknown members of natural microbial communities. Selection is...
Authors
Vanessa A Varaljay, Sriram Satagopan, Justin A. North, Briana Witteveen, Manuella N. Dourado, Karthik Anantharaman, Mark A. Arbing, Shelley McCann, Ronald S. Oremland, Jillian F. Banfield, Kelly C. Wrighton, F. Robert Tabita
Characterization of the extremely arsenic-resistant Brevibacterium linens strain AE038-8 isolated from contaminated groundwater in Tucumán, Argentina Characterization of the extremely arsenic-resistant Brevibacterium linens strain AE038-8 isolated from contaminated groundwater in Tucumán, Argentina
Brevibacterium linens AE038-8, isolated from As-contaminated groundwater in Tucumán (Argentina), is highly resistant to arsenic oxyanions, being able to tolerate up to 1 M As(V) and 75 mM As(III) in a complex medium. Strain AE038-8 was also able to reduce As(V) to As(III) when grown in complex medium but paradoxically it could not do this in a defined minimal medium with sodium acetate...
Authors
Daniela Maizel, Jodi S. Blum, Marcela A. Ferrero, Sagar M. Utturkar, Steven D. Brown, Barry P. Rosen, Ronald S. Oremland
Anaerobic chemolithotrophic growth of the haloalkaliphilic bacterium strain MLMS‑1 by disproportionation of monothioarsenate Anaerobic chemolithotrophic growth of the haloalkaliphilic bacterium strain MLMS‑1 by disproportionation of monothioarsenate
A novel chemolithotrophic metabolism based on a mixed arsenic−sulfur species has been discovered for the anaerobic deltaproteobacterium, strain MLMS-1, a haloalkaliphile isolated from Mono Lake, California, U.S. Strain MLMS‑1 is the first reported obligate arsenate-respiring chemoautotroph which grows by coupling arsenate reduction to arsenite with the oxidation of sulfide to sulfate. In...
Authors
B. Planer-Friedrich, C. Hartig, R. Lohmayer, E. Suess, Shelley McCann, Ronald S. Oremland
Stable carbon isotope fractionation during bacterial acetylene fermentation: Potential for life detection in hydrocarbon-rich volatiles of icy planet(oid)s Stable carbon isotope fractionation during bacterial acetylene fermentation: Potential for life detection in hydrocarbon-rich volatiles of icy planet(oid)s
We report the first study of stable carbon isotope fractionation during microbial fermentation of acetylene (C2H2) in sediments, sediment enrichments, and bacterial cultures. Kinetic isotope effects (KIEs) averaged 3.7 ± 0.5‰ for slurries prepared with sediment collected at an intertidal mudflat in San Francisco Bay and 2.7 ± 0.2‰ for a pure culture of Pelobacter sp. isolated from these...
Authors
Laurence Miller, Shaun Baesman, Ron Oremland
Science and Products
Filter Total Items: 120
The genetic basis of anoxygenic photosynthetic arsenite oxidation The genetic basis of anoxygenic photosynthetic arsenite oxidation
“Photoarsenotrophy”, the use of arsenite as an electron donor for anoxygenic photosynthesis, is thought to be an ancient form of phototrophy along with the photosynthetic oxidation of Fe(II), H2S, H2, and NO2-. Photoarsenotrophy was recently identified from Paoha Island's (Mono Lake, CA) arsenic-rich hot springs. The genomes of several photoarsenotrophs revealed a gene cluster...
Authors
Jamie Hernandez-Maldonado, Benjamin Sanchez-Sedillo, Brendon Stoneburner, Alison Boren, Laurence G. Miller, Shelley McCann, Michael R. Rosen, Ronald S. Oremland, Chad W. Saltikov
Microbial antimony biogeochemistry: Enzymes, regulation, and related metabolic pathways Microbial antimony biogeochemistry: Enzymes, regulation, and related metabolic pathways
Antimony (Sb) is a toxic metalloid that occurs widely at trace concentrations in soil, aquatic systems, and the atmosphere. Nowadays, with the development of its new industrial applications and the corresponding expansion of antimony mining activities, the phenomenon of antimony pollution has become an increasingly serious concern. In recent years, research interest in Sb has been...
Authors
Jingxin Li, Qian Wang, Ronald S. Oremland, Thomas R. Kulp, Christopher Rensing, Gejiao Wang
Functional metagenomic selection of RubisCOs from uncultivated bacteria Functional metagenomic selection of RubisCOs from uncultivated bacteria
Ribulose 1,5-bisphosphate carboxylase/oxygenase (RubisCO) is a critical yet severely inefficient enzyme that catalyses the fixation of virtually all of the carbon found on Earth. Here, we report a functional metagenomic selection that recovers physiologically active RubisCO molecules directly from uncultivated and largely unknown members of natural microbial communities. Selection is...
Authors
Vanessa A Varaljay, Sriram Satagopan, Justin A. North, Briana Witteveen, Manuella N. Dourado, Karthik Anantharaman, Mark A. Arbing, Shelley McCann, Ronald S. Oremland, Jillian F. Banfield, Kelly C. Wrighton, F. Robert Tabita
Characterization of the extremely arsenic-resistant Brevibacterium linens strain AE038-8 isolated from contaminated groundwater in Tucumán, Argentina Characterization of the extremely arsenic-resistant Brevibacterium linens strain AE038-8 isolated from contaminated groundwater in Tucumán, Argentina
Brevibacterium linens AE038-8, isolated from As-contaminated groundwater in Tucumán (Argentina), is highly resistant to arsenic oxyanions, being able to tolerate up to 1 M As(V) and 75 mM As(III) in a complex medium. Strain AE038-8 was also able to reduce As(V) to As(III) when grown in complex medium but paradoxically it could not do this in a defined minimal medium with sodium acetate...
Authors
Daniela Maizel, Jodi S. Blum, Marcela A. Ferrero, Sagar M. Utturkar, Steven D. Brown, Barry P. Rosen, Ronald S. Oremland
Anaerobic chemolithotrophic growth of the haloalkaliphilic bacterium strain MLMS‑1 by disproportionation of monothioarsenate Anaerobic chemolithotrophic growth of the haloalkaliphilic bacterium strain MLMS‑1 by disproportionation of monothioarsenate
A novel chemolithotrophic metabolism based on a mixed arsenic−sulfur species has been discovered for the anaerobic deltaproteobacterium, strain MLMS-1, a haloalkaliphile isolated from Mono Lake, California, U.S. Strain MLMS‑1 is the first reported obligate arsenate-respiring chemoautotroph which grows by coupling arsenate reduction to arsenite with the oxidation of sulfide to sulfate. In...
Authors
B. Planer-Friedrich, C. Hartig, R. Lohmayer, E. Suess, Shelley McCann, Ronald S. Oremland
Stable carbon isotope fractionation during bacterial acetylene fermentation: Potential for life detection in hydrocarbon-rich volatiles of icy planet(oid)s Stable carbon isotope fractionation during bacterial acetylene fermentation: Potential for life detection in hydrocarbon-rich volatiles of icy planet(oid)s
We report the first study of stable carbon isotope fractionation during microbial fermentation of acetylene (C2H2) in sediments, sediment enrichments, and bacterial cultures. Kinetic isotope effects (KIEs) averaged 3.7 ± 0.5‰ for slurries prepared with sediment collected at an intertidal mudflat in San Francisco Bay and 2.7 ± 0.2‰ for a pure culture of Pelobacter sp. isolated from these...
Authors
Laurence Miller, Shaun Baesman, Ron Oremland