Results 81 to 90 of about 19,628 (270)

Report from the 10th International Congress on Extremophiles

open access: yesGenomics Data, 2015
Scientists across the world extensively working on various concepts of extraterrestrial life and life on earth, many astrobiological investigations are on to completely decipher the correlation of astrobiology and biology.
Amrita Kumari Panda   +3 more
doaj   +1 more source

An Adaptation To Life In Acid Through A Novel Mevalonate Pathway. [PDF]

open access: yes, 2016
Extreme acidophiles are capable of growth at pH values near zero. Sustaining life in acidic environments requires extensive adaptations of membranes, proton pumps, and DNA repair mechanisms.
Bowie, James U   +3 more
core   +1 more source

Interactions of rare earth elements with living organisms and emerging biotechnical applications

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Rare earth elements (REEs) are critical resources required to achieve net‐zero carbon emission targets and energy security. However, rising demand for REEs coupled with significant extraction and processing challenges and geopolitical risks restricts access to REE resources.
Samantha A. McGaughey   +6 more
wiley   +1 more source

Predator Avoidance in Extremophile Fish [PDF]

open access: yesLife, 2013
Extreme habitats are often characterized by reduced predation pressures, thus representing refuges for the inhabiting species. The present study was designed to investigate predator avoidance of extremophile populations of Poecilia mexicana and P. sulphuraria that either live in hydrogen sulfide-rich (sulfidic) springs or cave habitats, both of which ...
Bierbach, David   +7 more
openaire   +6 more sources

Exploring Fingerprints of the Extreme Thermoacidophile Metallosphaera sedula Grown on Synthetic Martian Regolith Materials as the Sole Energy Sources

open access: yesFrontiers in Microbiology, 2017
The biology of metal transforming microorganisms is of a fundamental and applied importance for our understanding of past and present biogeochemical processes on Earth and in the Universe.
Denise Kölbl   +6 more
doaj   +1 more source

A Possible Biogenic Origin for Hydrogen Peroxide on Mars: The Viking Results Reinterpreted [PDF]

open access: yes, 2006
The adaptability of extremophiles on Earth raises the question of what strategies putative life might have used to adapt to the present conditions on Mars. Here, we hypothesize that organisms might utilize a water-hydrogen peroxide (H2O-H2O2) mixture rather than water as an intracellular liquid.
arxiv   +1 more source

Biodiversity of poly-extremophilic Bacteria: Does combining the extremes of high salt, alkaline pH and elevated temperature approach a physico-chemical boundary for life? [PDF]

open access: yes, 2009
Bacterial microorganisms that grow optimally at Na+ concentrations of 1.7 M, or the equivalent of 10% (w/v) NaCl, and greater are considered to be extreme halophiles.
Bowers, Karen J   +2 more
core   +2 more sources

Thermally Driven Dynamic Behaviors in Polymeric Vesicles

open access: yesSmall, EarlyView.
Synthetic cells aim to mimic biological form, function, and behavior. In this article, the thermoresponsive properties of the polymer poly(ethylene oxide)‐poly(butylene oxide) are leveraged to create a range of polymeric synthetic cell systems on the nanoscale and microscale which possess a range of biomimetic properties, including cargo release ...
Matthew E. Allen   +6 more
wiley   +1 more source

Citrate synthase proteins in extremophilic organisms: Studies within a structure-based model [PDF]

open access: yesJournal of Chemical Physics 141, 235102 (2014), 2015
We study four citrate synthase homodimeric proteins within a structure-based coarse-grained model. Two of these proteins come from thermophilic bacteria, one from a cryophilic bacterium and one from a mesophilic organism; three are in the closed and two in the open conformations. Even though the proteins belong to the same fold, the model distinguishes
arxiv   +1 more source

Halotolerant Ability and α-Amylase Activity of Some Saltwater Fungal Isolates [PDF]

open access: yes, 2013
Four halotolerant fungal isolates originating from the saltwater Lake Urmia in Iran were selected during a screening program for salt resistance and α-amylase activity. The isolates were identified based on sequencing the ITS region and a part of the β-
Faramarzi, M.A.   +7 more
core   +1 more source

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