Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Having a like arrangement of substituents at a corresponding chiral center. For example, all naturally occurring alpha amino acids are homochiral with respect to their alpha carbon.
from The Century Dictionary.
- Related in the manner of one right hand to another right hand, or of one left hand to another left, that is, formed in the same way and turned in the same direction; identical in form and direction.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective chemistry
enantiopure
Etymologies
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Examples
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According to the above exchange, if I infer that the designer of life posessed the skills to purify homochiral nucleic acids then you think this is science.
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A supernova in close proximity would be able to effect an excess of homochiral molecules, and if the pond were covered with water lillies, a steady oscillating wind pattern would act as a UV adjustment as the lillies were blown back and forth over the surface of the pond.
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A supernova in close proximity would be able to effect an excess of homochiral molecules …
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Once you've got homochiral RNA, the D-ribose itself would 'select' for L-amino acids, and vice versa.
Scientists' Responses Solicited James F. McGrath 2008
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A scenario for homochiral evolution based on our amplification mechanism was hinted at some years ago27, and it also shares some similarities with the suggestion that chiral enrichment may result from the selective dissolution of only one enantiopure crystal of a conglomerate in a microenvironment28, but seems ultimately much simpler.
Chirality of life: Another false positive? - The Panda's Thumb 2006
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The probability of forming a functional homochiral polymer is much lower, since a precise amino acid sequence is required in many places.
Chirality of life: Another false positive? - The Panda's Thumb 2006
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A recent world conference on ‘The Origin of Homochirality and Life’ made it clear that the origin of this handedness is a complete mystery to evolutionists.4 The probability of forming one homochiral polymer of N monomers by chance = 2–N.
Chirality of life: Another false positive? - The Panda's Thumb 2006
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So, actually, putting the whole thing into a correct context I was referring to how Joyce and Orgel, in two separate papers, were arguing how *nearly* 100% homochiral synthesis is needed.
Good Math, Bad Math, and David Berlinkski - The Panda's Thumb 2006
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Note, this is the probability of any homochiral polypeptide.
Chirality of life: Another false positive? - The Panda's Thumb 2006
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Of course, many homochiral polymers are required for life, so the probabilities must be compounded.
Chirality of life: Another false positive? - The Panda's Thumb 2006
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