Mathematics – Logic
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008oleb...38..149g&link_type=abstract
Origins of Life and Evolution of Biospheres, Volume 38, Issue 2, pp.149-153
Mathematics
Logic
2
Tyrosine, Diastereomeric Effect, Airborne, Nonracemic, Chiral, Fungal Spore, Parity Violation Energy Difference
Scientific paper
On the occasions when D-tyrosine is observed to crystallize faster than its L-enantiomer, it is the result of a diastereomeric interaction between an airborne, non-racemic, chiral influence—probably a fungal spore—and the tyrosine enantiomers, enhancing the degree of crystal nucleation of D-tyrosine over L-tyrosine. This explanation, supported by experimental evidence, is presented as a more plausible alternative to the Shinitzky Deamer hypothesis (Shinitzky et al., Progress in biological chirality, Elsevier, Amsterdam, pp. 329 337, 2004; Deamer et al., Chirality, 19:751 763, 2007) which relies on the parity violation energy difference between enantiomers, a femtojoule to picojoule per mole theoretical energy range.
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