Results 61 to 70 of about 115,116 (309)

Isotopic Analysis of Purple Sulfur Bacteria and the Environmental Conditions of Lakes in Indiana and the Pacific Northwest: Water Column Characterizations for Use in Developing a Water Column Profiling Device [PDF]

, 2015
poster abstractA better understanding of purple sulfur bacterial geochemical signatures within natural anoxic lakes will provide essential information for the fabrication of a device to isolate and sample the biomass.
Khan, Shan, Mehringer, Brock, Orazi, Daniel L.   +2 more
core  

Molecular evidence for sediment nitrogen fixation in a temperate New England estuary [PDF]

, 2016
Primary production in coastal waters is generally nitrogen (N) limited with denitrification outpacing nitrogen fixation (N2-fixation). However, recent work suggests that we have potentially underestimated the importance of heterotrophic sediment N2 ...
Foster, Sarah Q., Fulweiler, Robinson W., Newell, Silvia E., Pritchard, Kaitlyn R.   +3 more
core   +3 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Wintertime Simulations Induce Changes in the Structure, Diversity and Function of Antarctic Sea Ice-Associated Microbial Communities

Microorganisms, 2022
Antarctic sea-ice is exposed to a wide range of environmental conditions during its annual existence; however, there is very little information describing the change in sea-ice-associated microbial communities (SIMCOs) during the changing seasons.
Violetta La Cono, Francesco Smedile, Francesca Crisafi, Laura Marturano, Stepan V. Toshchakov, Gina La Spada, Ninh Khắc Bản, Michail M. Yakimov   +7 more
doaj   +1 more source

Lipopolysaccharide uptake is augmented in lipopolysaccharide‐tolerant mouse macrophage‐like cells via increased CD14 expression

FEBS Open Bio, EarlyView.
In normal (nontolerant) cells, CD14 is crucial for both LPS uptake and LPS signaling. In LPS‐tolerant cells, in which LPS‐induced TNF‐α and IFN‐β production is suppressed, there is a dramatic increase in surface CD14 expression. The overexpressed CD14 in LPS‐tolerant cells is responsible for the enhanced LPS uptake without inducing pro‐inflammatory ...
Saeka Nishihara, Takayuki Manabe, Mika Jouta, Kiyoshi Kawasaki   +3 more
wiley   +1 more source

Competitive Growth of Sulfate-Reducing Bacteria with Bioleaching Acidophiles for Bioremediation of Heap Bioleaching Residue

International Journal of Environmental Research and Public Health, 2020
s Mining waste rocks containing sulfide minerals naturally provide the habitat for iron- and sulfur-oxidizing microbes, and they accelerate the generation of acid mine drainage (AMD) by promoting the oxidation of sulfide minerals.
A. Phyo, Yan Jia, Qiaoyi Tan, Heyun Sun, Yunfeng Liu, Bingxu Dong, Renman Ruan   +6 more
semanticscholar   +1 more source

Sulfur-Element containing metabolic pathways in human health and crosstalk with the microbiome

Biochemistry and Biophysics Reports, 2023
In humans, methionine derived from dietary proteins is necessary for cellular homeostasis and regeneration of sulfur containing pathways, which produce inorganic sulfur species (ISS) along with essential organic sulfur compounds (OSC).
Austin W. Hansen, Kallidaikurichi V. Venkatachalam   +1 more
doaj   +1 more source

Electrolyte Design Strategies for Static Shuttle‐Free and Long‐Life Aqueous Zinc‐Iodine Batteries

Advanced Functional Materials, EarlyView.
This review systematically summarizes recent advances in electrolyte design for static aqueous Zn‐I2 batteries, highlighting solvation regulation and interfacial engineering strategies to control reaction kinetics, suppress iodine shuttling, enhance energy density, and stabilize multi‐electron iodine redox chemistry for durable, high‐performance energy
Qianqin Zhou, Fan Zhang, Ting Liao, Ziqi Sun   +3 more
wiley   +1 more source

The microbial sulfur cycle at extremely haloalkaline conditions of soda lakes

Frontiers in Microbiology, 2011
Microbial sulfur cycle is among the most active in soda lakes. Oxidative part of the cycle is driven by chemolithoautotrophic haloalkaliphilic sulfur-oxidizing bacteria.
Dimitry Y Sorokin, Dimitry Y Sorokin
doaj   +1 more source