Results 21 to 30 of about 7,179,267 (297)
Astroenzymology – the environmental limits of enzyme activity [PDF]
, 2003 Using organisms from extreme terrestrial environments as models for extraterrestrial life may lead us to underestimate the range of environments that life may inhabit.
Daniel, Roy M., Roy Daniel
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Electronic Journal of Biotechnology, 2015 Background: Bacillus subtilis UMC7 isolated from the gut of termite Macrotermes malaccensis has the ability to secrete a significant amount of extracellular endoglucanase, with an enzyme activity of 0.12 ± 0.01 μmol/min/mL.
Kelvin Swee Chuan Wei +4 more
doaj +1 more source
Activity-dependent adenosine release may be linked to activation of Na+-K+ ATPase : an in vitro rat study [PDF]
, 2014 In the brain, extracellular adenosine increases as a result of neuronal activity. The mechanisms by which this occurs are only incompletely understood. Here we investigate the hypothesis that the Na+ influxes associated with neuronal signalling activate ...
Sims, Robert E. +6 more
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Bacterial extracellular enzyme activity in a future ocean [PDF]
, 2021 <p>Heterotrophic bacteria are recognised as vital components in the cycling and regulation of inorganic and organic matter in the ocean. Research to date indicates that future changes in ocean conditions may influence bacterial extracellular enzyme hydrolysis rates, which could affect the strength of the microbial loop and consequently organic ...
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Influence of water activity on the production of extracellular enzymes by Staphylococcus aureus [PDF]
Applied and Environmental Microbiology, 1978 Two enterotoxigenic strains of Staphylococcus aureus were examined for their ability to produce a number of extracellular enzymes at various water activity (alphaw) levels. Supernatant, dialyzed culture media were analyzed for total and relative levels of enzyme activity.
J A, Troller, J V, Stinson
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Evolution of extracellular enzyme activities during manure composting [PDF]
Journal of Applied Microbiology, 2002 Aims: The objectives of this work were to determine the extracellular enzyme profiles during composting, relate the activities of these enzymes to the changes in microbial population and compare the enzyme profiles between two manures. Methods and Results: API ZYMTM assay was used to monitor the activities of 19 extracellular enzymes during poultry and
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Enzyme activity and flexibility at very low hydration [PDF]
, 2005 Recent measurements have demonstrated enzyme activity at hydrations as low as 3%. This raises the question of whether hydration-induced enzyme flexibility is important for activity. Here, to address this, picosecond dynamic neutron scattering experiments
Kurkal, V. +9 more
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Luciferase activity under direct ligand-dependent control of a muscarinic acetylcholine receptor
BMC Biotechnology, 2009 Background Controlling enzyme activity by ligand binding to a regulatory domain of choice may have many applications e.g. as biosensors and as tools in regulating cellular functions.
Strotmann Rainer +3 more
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EVIDENCE FOR EXTRACELLULAR ENZYMIC ACTIVITY OF THE ISOLATED PERFUSED RAT HEART [PDF]
Biochemical Journal, 1965 1. The dissimilation of a number of externally added hexose phosphates and 5'-nucleotides by the perfused rat heart is described, and non-specific esterase and 5'-nucleotidase activity associated with the superficial cell membrane or vascular system has been demonstrated. 2. The rate of production of (14)CO(2) from [U-(14)C]glucose 6-phosphate suggests
J R, WILLIAMSON, D L, DIPIETRO
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The molecular basis of the effect of temperature on enzyme activity [PDF]
, 2010 Experimental data show that the effect of temperature on enzymes cannot be adequately explained in terms of a two-state model based on increases in activity and denaturation.
Oudshoorn, Matthew Leslie +17 more
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