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Chiral Polymerization in Open Systems From Chiral-Selective Reaction Rates

Overview of attention for article published in Origins of Life and Evolution of Biospheres, May 2012
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Title
Chiral Polymerization in Open Systems From Chiral-Selective Reaction Rates
Published in
Origins of Life and Evolution of Biospheres, May 2012
DOI 10.1007/s11084-012-9274-5
Pubmed ID
Authors

Marcelo Gleiser, Bradley J. Nelson, Sara Imari Walker

Abstract

We investigate the possibility that prebiotic homochirality can be achieved exclusively through chiral-selective reaction rate parameters without any other explicit mechanism for chiral bias. Specifically, we examine an open network of polymerization reactions, where the reaction rates can have chiral-selective values. The reactions are neither autocatalytic nor do they contain explicit enantiomeric cross-inhibition terms. We are thus investigating how rare a set of chiral-selective reaction rates needs to be in order to generate a reasonable amount of chiral bias. We quantify our results adopting a statistical approach: varying both the mean value and the rms dispersion of the relevant reaction rates, we show that moderate to high levels of chiral excess can be achieved with fairly small chiral bias, below 10%. Considering the various unknowns related to prebiotic chemical networks in early Earth and the dependence of reaction rates to environmental properties such as temperature and pressure variations, we argue that homochirality could have been achieved from moderate amounts of chiral selectivity in the reaction rates.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 21 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 2 10%
Canada 1 5%
Unknown 18 86%

Demographic breakdown

Readers by professional status Count As %
Researcher 7 33%
Student > Ph. D. Student 6 29%
Professor > Associate Professor 2 10%
Student > Master 2 10%
Student > Doctoral Student 1 5%
Other 1 5%
Unknown 2 10%
Readers by discipline Count As %
Chemistry 6 29%
Earth and Planetary Sciences 5 24%
Physics and Astronomy 3 14%
Computer Science 2 10%
Mathematics 1 5%
Other 2 10%
Unknown 2 10%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 06 March 2012.
All research outputs
#21,415,544
of 23,906,448 outputs
Outputs from Origins of Life and Evolution of Biospheres
#437
of 476 outputs
Outputs of similar age
#151,025
of 166,602 outputs
Outputs of similar age from Origins of Life and Evolution of Biospheres
#4
of 5 outputs
Altmetric has tracked 23,906,448 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 476 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 8.0. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 166,602 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 5 others from the same source and published within six weeks on either side of this one.