Special Issue "Symmetry of Life and Homochirality"
A special issue of Symmetry (ISSN 2073-8994).
Deadline for manuscript submissions: closed (28 February 2010)
Prof. Dr. David Cline
Physics & Astronomy Department, College of Letters & Sciences, UCLA, 3-166 Knudsen Hall, Box 951547, Los Angeles, CA 90095-1547, USA
Interests: astroparticle physics; solar neutrino puzzle and nucleon decay; unique detection of primordial black holes; gamma-ray astronomy
In 1848 L. Pasteur carried out one of the most important experiments in Life Sciences when he transmitted polarized light through a medium with crystal found near a wine producing facility. These crystals were large enough that the individual symmetry (or resolution) of the crystal could be determined. He discovered that these biological materials caused polarized light to have its plane rotated (or optical activity). Two key results come from this experiment:
(a)-Biological materials are built out of 3-dimensional molecules (stereo
(b)-Most of the key molecules in life are either left-handed or D (right-handed)
We now know that 19 of the 20 Amino Acids that make proteins in life are left-handed. This is sometimes called Chiral Symmetry breaking or Homochirality.
In the physical world the concepts of Symmetry and Symmetry breaking are of key importance, while Symmetry principles are key to important physical theories (i.e. Lorentz Invariance and the Theory of Relativity). Asymmetry comes into the nature of the weak force (that drives the energy production in the sun). This depends on a symmetry breaking that leads to a massive particle the Z° with the same properties as the photon of liquid but is 90 proton masses heaver.*
Some Biologists believe that the very existence of life depends on the chiral symmetry breaking or Homochirality; therefore, understanding the origin of this aspect of life could be related to the understanding of the origin of life to some.
*The author was part of the team that in 1983 discovered the Z° particles at Geneva, Switzerland.
Prof. Dr. David Cline
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. Papers will be published continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are refereed through a peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed Open Access quarterly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 500 CHF (Swiss Francs). English correction and/or formatting fees of 250 CHF (Swiss Francs) will be charged in certain cases for those articles accepted for publication that require extensive additional formatting and/or English corrections.
Symmetry 2010, 2(2), 767-798; doi:10.3390/sym2020767
Received: 1 March 2010; in revised form: 29 March 2010 / Accepted: 6 April 2010 / Published: 12 April 2010| Download PDF Full-text (590 KB)
Symmetry 2010, 2(2), 884-906; doi:10.3390/sym2020884
Received: 27 February 2010; in revised form: 7 April 2010 / Accepted: 12 April 2010 / Published: 19 April 2010| Download PDF Full-text (5914 KB)
Symmetry 2010, 2(2), 935-949; doi:10.3390/sym2020934
Received: 6 March 2010; in revised form: 6 April 2010 / Accepted: 14 April 2010 / Published: 19 April 2010| Download PDF Full-text (3114 KB)
Symmetry 2010, 2(2), 1022-1032; doi:10.3390/sym2021022
Received: 21 January 2010; in revised form: 28 April 2010 / Accepted: 10 May 2010 / Published: 13 May 2010| Download PDF Full-text (1045 KB) | Supplementary Files
Symmetry 2010, 2(2), 1055-1080; doi:10.3390/sym2021055
Received: 1 March 2010; in revised form: 26 April 2010 / Accepted: 13 May 2010 / Published: 25 May 2010| Download PDF Full-text (557 KB)
Article: Experimental Test of L- and D-Amino Acid Binding to L- and D-Codons Suggests that Homochirality and Codon Directionality Emerged with the Genetic Code
Symmetry 2010, 2(2), 1180-1200; doi:10.3390/sym2021180
Received: 9 June 2010; in revised form: 18 June 2010 / Accepted: 22 June 2010 / Published: 23 June 2010| Download PDF Full-text (1010 KB)
Symmetry 2010, 2(3), 1450-1460; doi:10.3390/sym2031450
Received: 2 February 2010; in revised form: 8 May 2010 / Accepted: 21 June 2010 / Published: 9 July 2010| Download PDF Full-text (438 KB)
Article: Mirror Symmetry Breaking in Helical Polysilanes: Preference between Left and Right of Chemical and Physical Origin
Symmetry 2010, 2(3), 1625-1652; doi:10.3390/sym2031625
Received: 21 February 2010; in revised form: 2 August 2010 / Accepted: 9 August 2010 / Published: 13 August 2010| Download PDF Full-text (1009 KB) | Correction
Last update: 10 October 2012