Search Results - "DWORKIN, Jason P."
-
1
The Search for Chiral Asymmetry as a Potential Biosignature in our Solar System
Published in Chemical reviews (10-06-2020)“…The search for evidence of extraterrestrial life in our Solar System is currently guided by our understanding of terrestrial biology and its associated…”
Get full text
Journal Article -
2
Extraterrestrial ribose and other sugars in primitive meteorites
Published in Proceedings of the National Academy of Sciences - PNAS (03-12-2019)“…Sugars are essential molecules for all terrestrial biota working in many biological processes. Ribose is particularly essential as a building block of RNA,…”
Get full text
Journal Article -
3
Identifying the Wide Diversity of Extraterrestrial Purine and Pyrimidine Nucleobases in Carbonaceous Meteorites
Published in Nature communications (26-04-2022)“…The lack of pyrimidine diversity in meteorites remains a mystery since prebiotic chemical models and laboratory experiments have predicted that these compounds…”
Get full text
Journal Article -
4
Cometary glycine detected in samples returned by Stardust
Published in Meteoritics & planetary science (01-09-2009)“…— Our previous analysis of cometary samples returned to Earth by NASA's Stardust spacecraft showed several amines and amino acids, but the origin of these…”
Get full text
Journal Article -
5
Ryugu Asteroid Sample Return Provides A Natural Laboratory for Primordial Chemical Evolution
Published in Nature communications (30-05-2023)“…The samples returned from near-Earth asteroid (162173) Ryugu provide a pristine record of the 4.6 billion years since the birth of the Solar System. The…”
Get full text
Journal Article -
6
Nanopore DNA Sequencing and Genome Assembly on the International Space Station
Published in Scientific reports (21-12-2017)“…We evaluated the performance of the MinION DNA sequencer in-flight on the International Space Station (ISS), and benchmarked its performance off-Earth against…”
Get full text
Journal Article -
7
Enrichment of the Amino Acid L-Isovaline by Aqueous Alteration on CI and CM Meteorite Parent Bodies
Published in Proceedings of the National Academy of Sciences - PNAS (07-04-2009)“…The distribution and enantiomeric composition of the 5-carbon (C₅) amino acids found in CI-, CM-, and CR-type carbonaceous meteorites were investigated by…”
Get full text
Journal Article -
8
Understanding prebiotic chemistry through the analysis of extraterrestrial amino acids and nucleobases in meteorites
Published in Chemical Society reviews (01-01-2012)“…The discoveries of amino acids of extraterrestrial origin in many meteorites over the last 50 years have revolutionized the Astrobiology field. A variety of…”
Get more information
Journal Article -
9
Carbonaceous meteorites contain a wide range of extraterrestrial nucleobases
Published in Proceedings of the National Academy of Sciences - PNAS (23-08-2011)“…All terrestrial organisms depend on nucleic acids (RNA and DNA), which use pyrimidine and purine nucleobases to encode genetic information. Carbon-rich…”
Get full text
Journal Article -
10
Extraterrestrial hexamethylenetetramine in meteorites—a precursor of prebiotic chemistry in the inner solar system
Published in Nature communications (07-12-2020)“…Despite extensive studies on the formation of organic molecules in various extraterrestrial environments, it still remains under debate when, where, and how…”
Get full text
Journal Article -
11
Evidence for perchlorates and the origin of chlorinated hydrocarbons detected by SAM at the Rocknest aeolian deposit in Gale Crater
Published in Journal of geophysical research. Planets (01-10-2013)“…A single scoop of the Rocknest aeolian deposit was sieved (< 150 µm), and four separate sample portions, each with a mass of ~50 mg, were delivered to…”
Get full text
Journal Article -
12
Uracil in the carbonaceous asteroid (162173) Ryugu
Published in Nature communications (21-03-2023)“…The pristine sample from the near-Earth carbonaceous asteroid (162173) Ryugu collected by the Hayabusa2 spacecraft enabled us to analyze the pristine…”
Get full text
Journal Article -
13
Primordial synthesis of amines and amino acids in a 1958 Miller H₂S-rich spark discharge experiment
Published in Proceedings of the National Academy of Sciences - PNAS (05-04-2011)“…Archived samples frbm a previously unreported 1958 Stanley Miller electric discharge experiment containing hydrogen sulfide (H₂S) were recently discovered and…”
Get full text
Journal Article -
14
The effects of parent body processes on amino acids in carbonaceous chondrites
Published in Meteoritics & planetary science (01-12-2010)“…– To investigate the effect of parent body processes on the abundance, distribution, and enantiomeric composition of amino acids in carbonaceous chondrites,…”
Get full text
Journal Article -
15
Extraterrestrial amino acids and L‐enantiomeric excesses in the CM2 carbonaceous chondrites Aguas Zarcas and Murchison
Published in Meteoritics & planetary science (01-01-2021)“…The abundances, distributions, enantiomeric ratios, and carbon isotopic compositions of amino acids in two fragments of the Aguas Zarcas CM2 type carbonaceous…”
Get full text
Journal Article -
16
Organometallic Compounds as Carriers of Extraterrestrial Cyanide in Primitive Meteorites
Published in Nature communications (25-06-2019)“…Extraterrestrial delivery of cyanide may have been crucial for the origin of life on Earth since cyanide is involved in the abiotic synthesis of numerous…”
Get full text
Journal Article -
17
Prebiotic chiral transfer from self-aminoacylating ribozymes may favor either handedness
Published in Nature communications (12-09-2024)“…Modern life is essentially homochiral, containing D-sugars in nucleic acid backbones and L-amino acids in proteins. Since coded proteins are theorized to have…”
Get full text
Journal Article -
18
Miller Volcanic Spark Discharge Experiment
Published in Science (American Association for the Advancement of Science) (17-10-2008)“…Miller's 1950s experiments used, besides the apparatus known in textbooks, one that generated a hot water mist in the spark flask, simulating a water…”
Get full text
Journal Article -
19
A Plausible Simultaneous Synthesis of Amino Acids and Simple Peptides on the Primordial Earth
Published in Angewandte Chemie International Edition (28-07-2014)“…Following his seminal work in 1953, Stanley Miller conducted an experiment in 1958 to study the polymerization of amino acids under simulated early Earth…”
Get full text
Journal Article -
20
Non-Protein Amino Acids Identified in Carbon-Rich Hayabusa Particles
Published in Meteoritics & planetary science (01-04-2022)“…Amino acid abundances in acid-hydrolyzed hot water extracts of gold foils containing five Category 3 (carbon-rich) Hayabusa particles were studied using liquid…”
Get full text
Journal Article