Results 121 to 130 of about 114,437 (327)

Groundwater chromate removal by autotrophic sulfur disproportionation

Environmental Science and Ecotechnology
Chromate [Cr(VI)] contamination in groundwater is a global environmental challenge. Traditional elemental sulfur-based biotechnologies for Cr(VI) removal depend heavily on the synthesis of dissolved organic carbon to fuel heterotrophic Cr(VI) reduction ...
Yan-Ying Qiu, Juntao Xia, Jiahua Guo, Xianzhe Gong, Liang Zhang, Feng Jiang   +5 more
doaj   +1 more source

Structural insights into dissimilatory sulfite reductases: Structure of desulforubidin from Desulfomicrobium norvegicum

Frontiers in Microbiology, 2011
Dissimilatory sulfite reductases (dSiRs) are crucial enzymes in bacterial sulfur-based energy metabolism, which is likely to have been present in some of the earliest life forms on Earth.
Tania F. Oliveira, Tania F. Oliveira, Edward eFranklin, José P. Afonso, Amir R. Khan, Neil J. Oldham, Inês A. C. ePereira, Margarida eArcher   +7 more
doaj   +1 more source

Chemolithotrophy and physiology of bacterial nutrient limitation [PDF]

An overview of the physiology of chemolithotrophic bacteria, particularly the thiobacilli, was presented. In these bacteria unique physiological traits are expressed during nutrient limited growth.
Matin, A.
core   +1 more source

Thermophilic Sulfate Reduction in Hydrothermal Sediment of Lake Tanganyika, East Africa [PDF]

, 1994
In environments with temperatures above 60 degrees C, thermophilic prokaryotes are the only metabolically active life-forms. By using the (SO42-)-S-35 tracer technique, we studied the activity of sulfate-reducing microorganisms (SRM) in hot sediment from
Elsgaard, L., Jørgensen, B., Mukwaya, G., Prieur, D.   +3 more
core   +1 more source

H2S‐Amplified “Three‐in‐One” Antibacterial Strategy for Periodontitis Treatment Using a Photosensitive Pillararene‐Embedded COF/MOF Hybrid

Advanced Science, EarlyView.
The integration of ROS‐generating systems with H2S depletion strategies effectively overcomes the limitations imposed by endogenous antioxidant defenses on ROS‐based antimicrobial therapies. In this study, the Cu‐MOF is incorporated into pillararene‐embedded COF, achieving a “three‐in‐one” antimicrobial effect that markedly alleviated periodontal ...
Shuang Liang, Meng‐Hao Li, Liang Cheng, Tian‐Shou Zhang, Hui Hui, Yan Wang, Hong‐Pu Zhang, Bo‐Wen Liu, Lin Wang, Ying‐Wei Yang   +9 more
wiley   +1 more source

Ecology of Thioploca spp.: Nitrate and sulfur storage in relation to chemical microgradients and influence of Thioploca spp. on the sedimentary nitrogen cycle

, 2001
Microsensors, including a recently developed NO3 − biosensor, were applied to measure O2 and NO3 − profiles in marine sediments from the upwelling area off central Chile and to investigate the influence of Thioploca spp.
Jørgensen, B., Kjær, T., Nielsen, L., Zopfi, J.   +3 more
core  

Geomicrobiological aspects of the oxidation of reduced sulfur compounds by photosynthesizing bacteria.

Polish journal of microbiology, 2007
The activity of photosynthesizing sulfur bacteria in a continuous culture was studied. The bacteria were isolated from the natural environment with the use of the Winogradski column. Isolated bacteria were cultured in synthetic medium and in the effluent from the column containig HS-.
Andrzej, Borkowski, Dorota, Wolicka
openaire   +1 more source

Sulfated Cyclocarya Paliurus Polysaccharide Sorchestrates the Gut Microbiome to Mobilize a Host‐Derived 12‐HEPE Against Ulcerative Colitis

Advanced Science, EarlyView.
A sulfated polysaccharide (SCP) from Cyclocarya paliurus alleviates ulcerative colitis by reshaping the gut microbiome. This remodeled microbiota orchestrates the upregulation of the host‐derived lipid 12‐HEPE, which directly inhibits the TLR4/NF‐κB pathway to suppress inflammation.
Xianxiang Chen, Mingyue Shen, Rui Zhang, Zhibing Huang, Hui Niu, Qiang Yu, Yi Chen, Xiangwen Pan, Liyuan Rong, Huiliang Wen, Jun Yang, Jianhua Xie   +11 more
wiley   +1 more source

Bioprocessing of ores: Application to space resources [PDF]

The role of microorganisms in the oxidation and leaching of various ores (especially those of copper, iron, and uranium) is well known. This role is increasingly being applied by the mining, metallurgy, and sewage industries in the bioconcentration of ...
Johansson, Karl R.
core   +1 more source

Understanding the Catalytic Determinant role of Diaphorase‐Like Subunit in Formate Dehydrogenases via Redox Couples

Advanced Science, EarlyView.
A unique mechanism of catalytic bias regulated by diaphorase‐like subunit in formate dehydrogenase from Rhodobacter aestuarii is revealed. The diaphorase‐like subunit functions act as a biological “voltage rheostat” that controls the slow release of NADH to regulate redox balance, biasing the enzyme's catalytic preference toward CO2 reduction over ...
Kuncheng Zhang, Weisong Liu, Hao Su, Huijuan Cui, Yuanming Wang, Zhiguang Zhu, Chun You, Lingling Zhang   +7 more
wiley   +1 more source