نتایج جستجو برای: active oxidizing species

تعداد نتایج: 971280  

2011
Ahmet Zeytun Johannes Sikorski Matt Nolan Alla Lapidus Susan Lucas James Han Hope Tice Jan-Fang Cheng Roxanne Tapia Lynne Goodwin Sam Pitluck Konstantinos Liolios Natalia Ivanova Konstantinos Mavromatis Natalia Mikhailova Galina Ovchinnikova Amrita Pati Amy Chen Krishna Palaniappan Olivier D. Ngatchou-Djao Miriam Land Loren Hauser Cynthia D. Jeffries Cliff Han John C. Detter Susanne Übler Manfred Rohde Brian J. Tindall Markus Göker Reinhard Wirth Tanja Woyke James Bristow Jonathan A. Eisen Victor Markowitz Philip Hugenholtz Hans-Peter Klenk Nikos C. Kyrpides

Hydrogenobacter thermophilus Kawasumi et al. 1984 is the type species of the genus Hydrogenobacter. H. thermophilus was the first obligate autotrophic organism reported among aerobic hydrogen-oxidizing bacteria. Strain TK-6(T) is of interest because of the unusually efficient hydrogen-oxidizing ability of this strain, which results in a faster generation time compared to other autotrophs. It is...

Journal: :Applied and environmental microbiology 2002
S A Keçeli R J Miles

The energy-generating pathways of Mycoplasma spp. are diverse. Thus, it was predicted that the ability of inhibitors of these pathways to block growth would vary among species. This prediction was tested with 14 Mycoplasma species and potential inhibitors. The greatest differentiation among test species was obtained using fluoride, iodoacetate (IAA), beta-fluoropyruvate (FP), cibacron blue (CB)...

Journal: :Fibers 2023

With TEMPO oxidation, it was possible to incorporate iron nanostructures into a cellulose nanofiber matrix. FTIR spectra showed the functional groups present in films. The combination of both and CNF confers films good electrochemical activity; characterization (CV) that they stability reduction process at potential 0–1 V, with materials 5% 10% being most active. Pb shows film is material highe...

Journal: :Aquatic Sciences 2022

Abstract Groundwater is an important freshwater resource and hosts specialized microbial assemblages providing fundamental ecosystem services. The current knowledge on the role of aquatic microorganisms in subsurface ecosystems still limited. This work aimed to explore links between groundwater hydrogeochemical properties community traits a volcanic unconfined aquifer, moderately impacted by an...

Journal: :Journal of molecular biology 2004
Linda M Oster Anke C Terwisscha van Scheltinga Karin Valegård Alasdair MacKenzie Hose Alain Dubus Janos Hajdu Inger Andersson

Deacetoxycephalosporin C synthase (DAOCS) from Streptomyces clavuligerus catalyses the oxidative ring expansion of the penicillin nucleus into the nucleus of cephalosporins. The reaction requires dioxygen and 2-oxoglutarate as co-substrates to create a reactive iron-oxygen intermediate from a ferrous iron in the active site. The active enzyme is monomeric in solution. The structure of DAOCS was...

Journal: :Applied and environmental microbiology 2010
Cara M Santelli Donald H Pfister Dana Lazarus Lu Sun William D Burgos Colleen M Hansel

Biologically active, passive treatment systems are commonly employed for removing high concentrations of dissolved Mn(II) from coal mine drainage (CMD). Studies of microbial communities contributing to Mn attenuation through the oxidation of Mn(II) to sparingly soluble Mn(III/IV) oxide minerals, however, have been sparse to date. This study reveals a diverse community of Mn(II)-oxidizing fungi ...

Journal: :The Journal of Experimental Medicine 2003
James M. Neill Oswald T. Avery

1. The systems responsible for oxidation and reduction in the pneumococcus cell have been shown to consist of two components, the nature of which has been discussed. 2. The oxidizing and reducing power of active extracts of pneumococci is inactivated by exposure to air. This loss in activity is due to an inactivation of the thermolabile cellular component consequent on secondary reactions analo...

Journal: :Environmental geochemistry and health 2016
T Lescure J Moreau C Charles T Ben Ali Saanda H Thouin N Pillas P Bauda I Lamy F Battaglia-Brunet

The global AsIII-oxidizing activity of microorganisms in eight surface soils from polluted sites was quantified with and without addition of organic substrates. The organic substances provided differed by their nature: either yeast extract, commonly used in microbiological culture media, or a synthetic mixture of defined organic matters (SMOM) presenting some common features with natural soil o...

Journal: :Applied and environmental microbiology 1994
T Sugio S Uemura I Makino K Iwahori T Tano R C Blake

When grown on iron-salt medium supplemented with the bisulfite ion, Leptospirillum ferrooxidans was much more sensitive to the ion than was Thiobacillus ferrooxidans. The causes of the sensitivity of L. ferrooxidans to the bisulfite ion were studied. The bisulfite ion completely inhibited the iron-oxidizing activities of L. ferrooxidans and T. ferrooxidans at 0.02 and 0.2 mM, respectively. A tr...

2013
Kristian Parey Ulrike Demmer Eberhard Warkentin Astrid Wynen Ulrich Ermler Christiane Dahl

ATP sulfurylase (ATPS) catalyzes a key reaction in the global sulfur cycle by reversibly converting inorganic sulfate (SO4 (2-)) with ATP to adenosine 5'-phosphosulfate (APS) and pyrophosphate (PPi). In this work we report on the sat encoded dissimilatory ATP sulfurylase from the sulfur-oxidizing purple sulfur bacterium Allochromatium vinosum. In this organism, the sat gene is located in one op...

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