Keith’s note: Science magazine is retracting a NASA paper they published 15 years ago – “A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus” but they are not […]
Arsenic
Posted inBiochemistry & Organic Chemistry, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Fossils & Paleontology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Press Release
Ancient Life Locked Arsenic Away To Survive Environmental Changes
Earth’s earliest life forms developed ways to survive the harmful effects of arsenic to cope with dramatic changes in their environment, a new study suggests.
Posted inExtremeophiles and Extreme Environments
Arsenic-Based Life Update
‘Arsenic-life’ bacterium prefers phosphorous after all, Nature “Tawfik says that he was shocked by how good the proteins were at discriminating between the essential phosphate and the deadly arsenate. This […]
Posted inAstrobiology (general), Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life
NASA, Arsenic-based Life, Jumping the Gun, and Open Science
Study challenges existence of arsenic-based life, Nature “A group of scientists, led by microbiologist Rosie Redfield at the University of British Columbia in Vancouver, Canada, have posted data on Redfield’s […]
Posted inExtremeophiles and Extreme Environments
Response to Comments on "A Bacterium That Can Grow Using Arsenic Instead of Phosphorus"
“Concerns have been raised about our recent study suggesting that arsenic (As) substitutes for phosphorus (P) in major biomolecules of a bacterium that tolerates extreme As concentrations. We welcome the […]
Posted inAstrogeology, Conferences and Meetings, Extremeophiles and Extreme Environments
Arsenic, Astrobiology, NASA, and the Media
Exclusive Interview: Discoverer of Arsenic Bacteria, in the Eye of the Storm, Science Now “Q: So, NASA approached you about doing a press conference, and you thought that was a […]
Posted inAstrobiology (general), Biogeochemical Cycles & Geobiology, Extremeophiles and Extreme Environments
Weird Arsenic-Eating Microbes Discovered? Yes. Finding E.T.? No.
NASA-Funded Astrobiology Research Discovers Earth Life Built With Arsenic, NASA “NASA-funded astrobiology research has changed the fundamental knowledge about what comprises all known life on Earth. Researchers conducting tests in […]
Posted inAstrobiology (general), Biogeochemical Cycles & Geobiology, Extremeophiles and Extreme Environments
Arsenic-Based Life Found on Earth
Astrobiologists: Deadly arsenic breathes life into organisms, Arizona State University “Evidence that the toxic element arsenic can replace the essential nutrient phosphorus in biomolecules of a naturally occurring bacterium expands […]
Posted inAstrochemistry, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Habitable Zones, Microbiology & Virology, Press Release
NASA-Funded Astrobiology Research Discovers Earth Life Built With Arsenic
NASA-funded astrobiology research has changed the fundamental knowledge about what comprises all known life on Earth. Researchers conducting tests in the harsh environment of Mono Lake in California have discovered […]