Results 71 to 80 of about 11,566 (244)

Assessment of Haloferax mediterranei Genome in Search of Copper-Molecular Machinery With Potential Applications for Bioremediation

Frontiers in Microbiology, 2022
Heavy metals are essential micronutrients at low concentrations, serving as cofactors for relevant microbial enzymes (i.e., respiratory nitrate and nitrite reductases NADH dehydrogenase-2, amine oxidase, etc.), but they become harmful cellular ...
Marina García Llorca, Rosa María Martínez-Espinosa, Rosa María Martínez-Espinosa   +2 more
doaj   +1 more source

Synthetic and Evolutionary Construction of a Chlorate-Reducing Shewanella oneidensis MR-1. [PDF]

, 2015
UnlabelledDespite evidence for the prevalence of horizontal gene transfer of respiratory genes, little is known about how pathways functionally integrate within new hosts.
Carlson, Hans K, Clark, Iain C, Coates, John D, Iavarone, Anthony T, Melnyk, Ryan A, Youngblut, Matthew D   +5 more
core   +3 more sources

Exploring the Denitrification Proteome of Paracoccus denitrificans PD1222

Frontiers in Microbiology, 2018
Denitrification is a respiratory process that produces nitrous oxide as an intermediate, which may escape to the atmosphere before its reduction to dinitrogen through the nitrous oxide reductase NosZ. In this work, the denitrification process carried out
Alfonso Olaya-Abril, Jesús Hidalgo-Carrillo, Víctor M. Luque-Almagro, Carlos Fuentes-Almagro, Francisco J. Urbano, Conrado Moreno-Vivián, David J. Richardson, María D. Roldán   +7 more
doaj   +1 more source

Indirect Antioxidant Effects of the Nitrite Anion: Focus on Xanthine Oxidase

Advances in Redox Research, 2023
One electron reduction of nitrite (NO2−) has been determined to be a significant, noncanonical source of nitric oxide (NO) with molybdopterin enzymes being identified as critical to this process. Of the molybdopterin enzymes identified as NO2− reductases,
Xena M. Williams, Alec T. Bossert, Evan Devalance, Sara E. Lewis, Michael R. Gunther, Eric E. Kelley   +5 more
doaj   +1 more source

A haloarchaeal ferredoxin electron donor that plays an essential role in nitrate assimilation [PDF]

, 2011
In the absence of ammonium, many organisms, including the halophilic archaeon Haloferax volcanii DS2 (DM3757), may assimilate inorganic nitrogen from nitrate or nitrite, using a ferredoxin-dependent assimilatory NO3-/NO2- reductase pathway.
Bonete, Mari­a José, Butt, Julea N., Gates, Andrew J., Martínez‑Espinosa, Rosa María, Richardson, David J., Zafrilla, Basilio   +5 more
core   +1 more source

Subchronic Exposure to Arsenic and Nickel Triggers Nitrosative Stress and Histological Alterations in the Rat Liver

Journal of Applied Toxicology, EarlyView.
ABSTRACT Environmental exposure to heavy metals poses a threat to human health. Several studies documented harmful effects on the liver after arsenic and nickel exposure at concentrations beyond permissible limits. Nevertheless, the impact of a simultaneous exposure to both elements on hepatic biochemistry and histology remains unelucidated. Therefore,
Thainá Iasbik‐Lima, Luiz Otávio Guimarães‐Ervilha, Isabela Pereira da Silva Bento, Renê Chagas da Silva, Mariana Machado‐Neves   +4 more
wiley   +1 more source

Reactions of HNO with Metal Porphyrins: Underscoring the Biological Relevance of HNO [PDF]

, 2014
Azanone (1 HNO, nitroxyl) shows interesting yet poorly understood chemical and biological effects. HNO has some overlapping properties with nitric oxide (NO), sharing its biological reactivity toward heme proteins, thiols, and oxygen.
Bikiel, Damian Ezequiel, Doctorovich, Fabio, Marti, Marcelo Adrian, Pellegrino, Juan, Suarez, Sebastian   +4 more
core   +1 more source

Effect of ammonium concentration on methane oxidation and CO2 removal in an anaerobic biotrickling filter treating synthetic landfill gas and leachate

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Landfill gas (LFG) and leachate are commonly treated separately through energy‐intensive processes. This study evaluated the integration of both streams in an anaerobic biotrickling filter (BTF) to achieve simultaneous methane (CH4) and carbon dioxide (CO2) removal coupled with ammonium (NH4+) transformation, and how the microbial ...
Cecilia Lizeth Alvarez‐Guzmán, Karla María Muñoz‐Páez, Alejandro Vargas, Idania Valdez‐Vazquez   +3 more
wiley   +1 more source

Active-site protein dynamics and solvent accessibility in native Achromobacter cycloclastes copper nitrite reductase

IUCrJ, 2017
Microbial nitrite reductases are denitrifying enzymes that are a major component of the global nitrogen cycle. Multiple structures measured from one crystal (MSOX data) of copper nitrite reductase at 240 K, together with molecular-dynamics simulations ...
Kakali Sen, Sam Horrell, Demet Kekilli, Chin W. Yong, Thomas W. Keal, Hakan Atakisi, David W. Moreau, Robert E. Thorne, Michael A. Hough, Richard W. Strange   +9 more
doaj   +1 more source

Structures of substrate- and product-bound forms of a multi-domain copper nitrite reductase shed light on the role of domain tethering in protein complexes

IUCrJ, 2020
Copper-containing nitrite reductases (CuNiRs) are found in all three kingdoms of life and play a major role in the denitrification branch of the global nitrogen cycle where nitrate is used in place of dioxygen as an electron acceptor in respiratory ...
Daisuke Sasaki, Tatiana F. Watanabe, Robert R. Eady, Richard C. Garratt, Svetlana V. Antonyuk, S. Samar Hasnain   +5 more
doaj   +1 more source