Results 201 to 210 of about 178,642 (254)
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Nature Reviews Microbiology, 2006
Many archaea are extremophiles. They thrive at high temperatures, at high pressure and in concentrated acidic environments. Nevertheless, the largest proportion and greatest diversity of archaea exist in cold environments. Most of the Earth's biosphere is cold, and archaea represent a significant fraction of the biomass.
Ricardo Cavicchioli +1 more
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Many archaea are extremophiles. They thrive at high temperatures, at high pressure and in concentrated acidic environments. Nevertheless, the largest proportion and greatest diversity of archaea exist in cold environments. Most of the Earth's biosphere is cold, and archaea represent a significant fraction of the biomass.
Ricardo Cavicchioli +1 more
exaly +3 more sources
Annual Review of Biochemistry, 2006
By far the largest proportion of the Earth's biosphere is comprised of organisms that thrive in cold environments (psychrophiles). Their ability to proliferate in the cold is predicated on a capacity to synthesize cold-adapted enzymes. These enzymes have evolved a range of structural features that confer a high level of flexibility compared to ...
Khawar Sohail, Siddiqui +1 more
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By far the largest proportion of the Earth's biosphere is comprised of organisms that thrive in cold environments (psychrophiles). Their ability to proliferate in the cold is predicated on a capacity to synthesize cold-adapted enzymes. These enzymes have evolved a range of structural features that confer a high level of flexibility compared to ...
Khawar Sohail, Siddiqui +1 more
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Cold Adaptation of Tropomyosin
Biochemistry, 2011The conformational stability of unphosphorylated and phosphorylated α,α-striated tropomyosins from rabbit and shark (95% identical sequences) has been investigated. Three additional core positions are occupied by atypical amino acids in the protein from shark: Thr179(d), Ser190(a), and Ser211(a).
Michael, Hayley +2 more
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2000
The number of reports on enzymes from cold adapted organisms has increased significantly over the past years, and reveals that adaptive strategies for functioning at low temperature varies among enzymes. However, the high catalytic efficiency at low temperature seems, for the majority of cold active enzymes, to be accompanied by a reduced thermal ...
A O, Smalås +3 more
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The number of reports on enzymes from cold adapted organisms has increased significantly over the past years, and reveals that adaptive strategies for functioning at low temperature varies among enzymes. However, the high catalytic efficiency at low temperature seems, for the majority of cold active enzymes, to be accompanied by a reduced thermal ...
A O, Smalås +3 more
openaire +2 more sources
Cold-adaptation of human rotavirus
Virus Research, 1987A human rotavirus strain was cold-adapted for possible future use as a live vaccine. The original strain was isolated in 1980 in primary cynomolgus monkey kidney cells and has a serotype I and subgroup II antigenicity. The virus was serially passaged in African green monkey kidney cells; it was cultivated at 37 degrees C at the first stage of passages,
S, Matsuno +6 more
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Cold adaptation of microorganisms
Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1990Abstract Psychrophilic and psychrotrophic microorganisms are important in global ecology as a large proportion of our planet is cold (below 5 °C); they are responsible for the spoilage of chilled food and they also have potential uses in low-temperature biotechnological processes.
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Advanced Healthcare Materials
AbstractCold‐adapted nanozymes represent a distinct class of nanomaterials that exhibit robust catalytic activity and stability under low‐temperature conditions (below 37 °C). By emulating the catalytic functions of natural enzymes, these nanozymes can overcome the inherent limitations of traditional enzymes, which typically suffer from the reduced ...
Tianye Zhang +7 more
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AbstractCold‐adapted nanozymes represent a distinct class of nanomaterials that exhibit robust catalytic activity and stability under low‐temperature conditions (below 37 °C). By emulating the catalytic functions of natural enzymes, these nanozymes can overcome the inherent limitations of traditional enzymes, which typically suffer from the reduced ...
Tianye Zhang +7 more
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The Neanderthal face is not cold adapted
Journal of Human Evolution, 2011Many morphological features of the Pleistocene fossil hominin Homo neanderthalensis, including the reputed large size of its paranasal sinuses, have been interpreted as adaptations to extreme cold, as some Neanderthals lived in Europe during glacial periods.
Todd C, Rae +2 more
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Cold-adapted influenza vaccines
Current Opinion in Pediatrics, 2002Because of the health impact of complicated disease from influenza in children, the role played by children in spreading influenza, and the limitations of inactivated influenza vaccine in this population, there has been ongoing effort to identify a more effective and acceptable vaccine.
John, Bradshaw, Peter F, Wright
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Importance of noradrenaline in cold adaptation
American Journal of Physiology-Legacy Content, 1964Noradrenaline (300 µg/kg) was injected daily for 45 days in a group of 15 rats. At the end of this period O2 consumption and rectal temperature responses to noradrenaline (200 µg/kg) were measured at 30 C in these animals as well as in cold-acclimated and control groups.
J, LEBLANC, M, POULIOT
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