Results 61 to 70 of about 29,019 (254)
The Barrier Properties of Biological Membranes Dictate How Cells Experience Oxidative Stress
Molecular oxygen diffuses across membranes with such speed that, despite respiration, the intracellular oxygen concentration does not differ significantly from that outside the cell. In contrast, membranes are important barriers for hydrogen peroxide and especially superoxide, so that intracellular scavenging enzymes can substantially shield cells from
James A. Imlay
wiley +1 more source
Soft-metal(loid)s induce protein aggregation in Escherichia coli
Metal(loid) salts were used to treat infectious diseases in the past due to their exceptional biocidal properties at low concentrations. However, the mechanism of their toxicity has yet to be fully elucidated.
Fabián A. Cornejo+10 more
doaj +1 more source
El objetivo fundamental de la incubación en anaerobiosis es la recuperación de bacterias anaerobias obligadas, aunque ésta no excluye la recuperación de otros microorganismos.
M.R. Litterio Bürki, H. Lopardo
doaj
INDUCTION OF ANAEROBIC PROCESSES IN BAIKAL ENDEMICS EULIMNOGAMMARUS VITTATUS (DYB.) AND E. VERRUCOSUS (DYB.) (AMPHIPODA, CRUSTACEA) [PDF]
The data confirming the ability of Baikalian endemic species Eulimnogammarus vittatus (Dyb.) and E. verrucosus (Dyb.) to activate anaerobic glycolysis under hypoxia are presented. The differences in the degree and the rate of lactic acid accumulation and
Timofeyev M.A.+5 more
doaj
The Gram-negative bacterium Vibrio cholerae is responsible for the severe diarrheal pandemic disease cholera, representing a major global public health concern.
Ansel Hsiao, Jun Zhu
doaj +1 more source
Methionine Sulfoxide Reductases Contribute to Anaerobic Fermentative Metabolism in Bacillus cereus
Reversible oxidation of methionine to methionine sulfoxide (Met(O)) is a common posttranslational modification occurring on proteins in all organisms under oxic conditions.
Catherine Duport+4 more
doaj +1 more source
Relative contributions of carbohydrates and proteins to metal mobilisation in an anaerobic soil slurry amended with rum vinasses [PDF]
The spreading of liquid organic wastes on soils enhances the risks of anaerobiosis and metal mobilisation. Under anaerobiosis, microbial activities drive most of soil geochemical evolutions through reductions, pH changes, net production of mineral and ...
Findeling, Antoine+3 more
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Abstract The Krebs or tricarboxylic acid (TCA) cycle plays a key role in the regulation of immune responses and adaptations to hypoxia that occur during sepsis. Although the concentrations of some of these intermediates have been reported to be increased in large cohorts of septic patients, a detailed analysis of their changes during sepsis is still ...
Juan D. Caicedo Ruiz+4 more
wiley +1 more source
The microbiome is an underappreciated contributor to intestinal drug metabolism with broad implications for drug efficacy and toxicity. While considerable progress has been made toward identifying the gut bacterial genes and enzymes involved, the role of
Lindsey M. Pieper+5 more
doaj +1 more source
Ornithine-catalyzed urea formation in liver homogenate [PDF]
Heretofore attempts to obtain synthesis of urea from ammonia (and carbon dioxide) in cell-free extracts have been unsuccessful. We have found the reaction to proceed in guinea pig liver homogenate.
Borsook, Henry, Dubnoff, Jacob W.
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