Homochirality of Biomolecules: Counter-Arguments Against Critical Notes

Details Homochirality of Biomolecules: Counter-Arguments Against Critical Notes Homochirality of Biomolecules: Counter-Arguments Against Critical Notes

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001oleb...31..249k&link_type=abstract

Origins of Life and Evolution of the Biosphere, Volume 31, Issue 3, pp.249-256

Biology

Quantitative Biology

Biomolecules

5

Circularly Polarized Light, Enantiomers, Magnetochiral, Parity-Violating Energy Difference, Photochemistry, Synchrotron Radiation

Scientific paper

Three recently published critical papersby Bonner and coworkers on the extraterrestrial origin of thehomochirality of biomolecules and the amplification of tinyenantiomeric excess are discussed. The presented arguments showthe difficulties involved in circularly polarized u.v. andvisible synchrotron radiation from neutron stars, in their ratioto non circularly polarized light and in racemization of theproducts. Attention is called upon another mechanism forproduction of extraterrestrial handedness based on Salam'scondensation theory and on the recent experimental demonstrationof the enantioselective magnetochiral photochemistry. Arguments,as well as experiments, point out that tiny enantiomeric excessesmight be amplified via the Yamagata accumulation principlequestioned by Bonner.

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