Synergetic mechanisms of chiral symmetry breaking in prebiotic evolution.

نویسندگان

  • P Babinec
  • J Krempaský
چکیده

It was shown on the Frank autocatalytic reaction-diffusion scheme that strong environmental fluctuations, conditioned by external noise (e.g. sunlight fluctuation) and external macroscopic flows (e.g. ebb and flow), typical for conditions on prebiotic earth, may have been beneficial for chiral symmetry breaking and formation and stabilization of biomolecular homochirality.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Mirror symmetry breaking of the bioorganic world: biogenic and abiogenic approaches

While inorganic nature contains equal amounts of different chirality type molecules, living nature is chirally pure. This mirror asymmetry of the bioorganic world on the molecular level is one of the unsolved mysteries of biology. A number of approaches to the solution of this problem were developed. Biogenic approaches claim that the property of chiral purity was selected in the course of biol...

متن کامل

Photochirogenesis: Photochemical Models on the Origin of Biomolecular Homochirality

Current research focuses on a better understanding of the origin of biomolecular asymmetry by the identification and detection of the possibly first chiral molecules that were involved in the appearance and evolution of life on Earth. We have reasons to assume that these molecules were specific chiral amino acids. Chiral amino acids have been identified in both chondritic meteorites and simulat...

متن کامل

Chiral symmetry breaking in a microscopic model with asymmetric autocatalysis and inhibition.

Asymmetric autocatalysis and inhibition have been proposed as key processes in the spontaneous emergence of chiral symmetry breaking in a prebiotic world. An elementary lattice model is formulated to simulate the kinetics of chiral symmetry breaking via autocatalysis and inhibition in a mixture of prochiral reactants, chiral products, and inert solvent. Starting from a chirally unbiased initial...

متن کامل

Life's Chirality From Prebiotic Environments

A key open question in the study of life is the origin of biomolecular homochirality: almost every life-form on Earth has exclusively levorotary amino acids and dextrorotary sugars. Will the same handedness be preferred if life is found elsewhere? We review some of the pertinent literature and discuss recent results suggesting that life’s homochirality resulted from sequential chiral symmetry b...

متن کامل

THE FRANK KINETIC MODEL FOR SPONTANEOUS CHIRAL SYMMETRY BREAKING WITH VARIABLE CONCENTRATION OF THE ACHIRAL SUBSTRATE

This paper considers the possibility of spontaneous transition of aracemic mixture (composed of equal amounts of two enantiomeric species, say L and D) into a monochiral state (in which only one enantiomer, say L, is present). Transitions of this kind have been recently experimentally observed. A plausible approach to this phenomenon is a model put forward by Frank, based on simple laws of ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • General physiology and biophysics

دوره 13 4  شماره 

صفحات  -

تاریخ انتشار 1994