Archaea – Page 5 – My WordPress Site

The North Polar layered deposits are a stack of ice-rich layers, with different layers likely having varying amounts of dust. uahirise Larger image

Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life

Oxygen Metabolism In Descendants Of The Archaeal-Eukaryotic Ancestor

by Keith CowingJuly 8, 2024July 7, 2024

A team of Japanese and US scientists have discovered the bio-essential sugars ribose and glucose in samples of asteroid Bennu that were collected by NASA’s OSIRIS-REx mission. This finding builds on the earlier discovery of nucleobases (the genetic components of DNA and RNA), phosphate, and amino acids (the building blocks of proteins) in the Bennu samples, showing that the molecular ingredients of life could have been delivered to early Earth by meteorites. Download this graphic from NASA’s Scientific Visualization Studio website: https://svs.gsfc.nasa.gov/14932 NASA/Goddard/University of Arizona/Dan Gallagher

Analog Studies, Away Teams & Field Reports, Biophysics, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life

A Metagenome From a Steam Vent in Los Azufres Geothermal Field Shows an Abundance of Thermoplasmatales Archaea and Bacteria from the Phyla Actinomycetota and Pseudomonadota

by Keith CowingJune 25, 2024June 25, 2024

Dr. Jill Tarter

Biochemistry & Organic Chemistry, Biophysics, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Nanotechnology & SynBio, Origin & Evolution of Life

How Archaea, The Third Form Of Earth Life, Makes Energy

by Keith CowingJune 12, 2024June 12, 2024

A panoramic picture of one of five hot springs during winter, showing the source water and CO2 bubbles. Credit Fatima Li-Hau, ELSI

Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life

Convergence and Horizontal Gene Transfer Drive the Evolution of Anaerobic Methanotrophy in Archaea

by Keith CowingMay 31, 2024May 31, 2024

Contour plots to approximate vshift for different offsets in ephemeris. The top three panels of the figure use fixed Kp values of 100 km s−1 , 150 km s−1 , and 200 km s−1 , while varying the period and ephemeris offset. The bottom three panels use fixed period values of 1 day, 2 days, and 5 days, while varying the Kp and ephemeris offset. -- astro-ph.EP

Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Gaia - Planetary Perspectives, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, ROVs/Submersibles/Diving, Sample Return, Water/Hycean Worlds & Oceanography

A Global Atlas Of Subsurface Microbiomes Reveals Phylogenetic Novelty, Large Scale Biodiversity Gradients, And A Marine-terrestrial Divide

by Keith CowingMay 3, 2024May 3, 2024

Transit spectra of the best fit non-equilibrium 1D model at resolution 200 (black solid line). This is the approximate best fit on the simulated grid of metallicity, C/O and Kzz. Values are respectively 280.7, 90.0 and 106 cm2 .s−1 . It is compare to K2-18 b observation (Madhusudhan et al. 2023) low resolution representation with an offset of -41ppm between NIRISS and NIRSpec data. The contributions of considered molecules are represented with shaded colors. -- astro-ph.EP

Biochemistry & Organic Chemistry, Biophysics, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology

Ultrastructural Insights Into Cellular Organization, Energy Storage And Ribosomal Dynamics Of An Ammonia-oxidizing Archaeon From Oligotrophic Oceans

by Keith CowingApril 27, 2024April 27, 2024

A radar image showing the Gamburtsev mountain range under layers of ice. Creyts et al., Geophysical Research Letters (2014), CC BY-SA

Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life

Early-branching Cyanobacteria Up-regulate Superoxide Dismutase Activity Under A Simulated Early Earth Anoxic Atmosphere

by Keith CowingMarch 17, 2024

Analog Studies, Atmospheres, Climate, Weather, Away Teams & Field Reports, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Fossils & Paleontology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Microbiology & Virology

Extremely Acidic Proteomes And Metabolic Flexibility In Bacteria And Highly Diversified Archaea Thriving In Geothermal Chaotropic Brines

by Keith CowingMarch 17, 2024November 21, 2025

Mars simulation chamber at PASLAB—DLR Berlin (A) and a detail of the experiment chamber with the samples in holders (B). A graphical representation of the rotating platform, showing the sample distribution in the sample holders (C). -- LIFE

Biochemistry & Organic Chemistry, Biophysics, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology

Deconstructing The Structural Elements Of Extremophile Archaea Haloferax volcanii

by Keith CowingMarch 7, 2024March 7, 2024

NASA astronaut and Expedition 65 Flight Engineer Mark Vande Hei harvests plants growing in petri plates inside the Veggie facility for the APEX-7 (Advanced Plant Experiment-07) space botany study. iss065e147928 (June 26, 2021) -- NASA

Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life

The Key Steps in the Origin of Life to the Formation of the Eukaryotic Cell

by Keith CowingFebruary 27, 2024February 27, 2024