Origins of life
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Sắp xếp:
Comet Shoemaker-levy 9, Jupiter, and impact shock chemistry
Origins of life - Tập 26 - Trang 529-530 - 1996
Question 8: Bridging the Gap Between In Silico and In Vitro Approaches to Minimal Cells
Origins of life - Tập 37 - Trang 455-458 - 2007
In this short paper we argue for the relevance and value of theoretical models in the field of origins of life, but also claim that both theoreticians and experimentalists should make an effort to come together and interact more closely to obtain more fruitful and significant results. As an example, we present our own modeling approach to protocell dynamics, including some simulation results, to s......
Attempted asymmetric electrochemical reductions in magnetic fields
Origins of life - Tập 20 - Trang 1-13 - 1990
Because of negative, ambiguous or controversial results claimed by previous investigators studying the potential efficacy of magnetic fields in directing asymmetric syntheses and because of its potential importance as regards the origin of optical activity, we have attempted to confirm a recent report by Takahashiet al. (1986), who claimed that phenylglyoxylic acid (XIX) may be reduced electrochem......
Nonlinear mathematical models for the origin of asymmetry in biological molecules
Origins of life - Tập 6 - Trang 317-366 - 1975
The origin of chemical chirality is probably associated with a difference in the initial concentrations of two separate populations of primeval organic molecules and possibly even two types of primeval organisms and amplified by nonlinear kinetic processes leading to the death of one population. This theory, as originally developed by F. C. Frank of the University of Bristol, is reviewed in this p......
Synthesis of purine and pyrimidine bases and nucleosides under the cold plasma conditions (IX)
Origins of life - Tập 8 Số 3 - Trang 237-246 - 1977
Phosphorylation of Adenosine with Trimetaphosphate Under Simulated Prebiotic Conditions
Origins of life - Tập 32 - Trang 219-224 - 2002
The phosphorylation of adenosine withtrimetaphosphate in solution, in solid phase and usingwet-dry cycles was carried out and it was found thatwet-dry cycles were the most efficient. The catalytic effectsof some metal ions on the phosphorylation were alsostudied and it was discovered that Ni(II) is the mosteffective. The combination of wet-dry cycles (4 cycles)and catalysis by Ni(II) led to an unp......
The Relative Rates of Thiol–Thioester Exchange and Hydrolysis for Alkyl and Aryl Thioalkanoates in Water
Origins of life - Tập 41 - Trang 399-412 - 2011
This article reports rate constants for thiol–thioester exchange (k
ex), and for acid-mediated (k
a), base-mediated (k
b), and pH-independent (k
w) hydrolysis of S-methyl thioacetate and S-phenyl 5-dimethylamino-5-oxo-thiopentanoate—model alkyl and aryl thioalkanoates, respectively—in water. Reactions s......
Experimental approach to the chemical evolution of iron containing enzymes: Role of mixed ligand complexes of iron(II)
Origins of life - Tập 16 - Trang 496-497 - 1986
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