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Chiral Polymerization in Open Systems From Chiral-Selective Reaction Rates

Overview of attention for article published in Origins of Life & Evolution of the Biosphere, May 2012
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Title
Chiral Polymerization in Open Systems From Chiral-Selective Reaction Rates
Published in
Origins of Life & Evolution of the Biosphere, 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

The data shown below were compiled from readership statistics for 17 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 2 12%
Canada 1 6%
Unknown 14 82%

Demographic breakdown

Readers by professional status Count As %
Researcher 7 41%
Student > Ph. D. Student 5 29%
Professor > Associate Professor 3 18%
Professor 1 6%
Unspecified 1 6%
Other 0 0%
Readers by discipline Count As %
Chemistry 5 29%
Physics and Astronomy 4 24%
Earth and Planetary Sciences 4 24%
Computer Science 2 12%
Mathematics 1 6%
Other 1 6%

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
#11,180,213
of 12,565,350 outputs
Outputs from Origins of Life & Evolution of the Biosphere
#332
of 346 outputs
Outputs of similar age
#100,763
of 117,201 outputs
Outputs of similar age from Origins of Life & Evolution of the Biosphere
#5
of 5 outputs
Altmetric has tracked 12,565,350 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 346 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.9. 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 117,201 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.
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