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Physica A 257 (1998) 119127 Primordial synthesis machines and the origin

Summary: Physica A 257 (1998) 119­127
Primordial synthesis machines and the origin
of the genetic code
M. Aldana a
, F. CĂazarez-Bush b
, G. Cocho b
, G. MartĂnez-Mekler a;
a Laboratorio de Cuernavaca, Instituto de FĂsica, UNAM, Apdo. Postal, 48-3. 62251, Cuernavaca,
Morelos, Mexico
bInstituto de FĂsica, UNAM, Apdo. Postal, 20-364, 01000, MĂexico, D.F., Mexico
We characterize the dynamics of primitive molecular synthesis machines operating in outer
space on quasi-one-dimensional channels where polymers interact with ˙xed particles. We show
that a generic property of particle=polymer electrostatic interactions is an average three monomer
spacing between consecutive interaction potential minima. We exhibit that this property translates
into locomotion regularities with a slowing down every three monomers. We argue that this
transport property may be at the origin of the three base codon composition of the genetic code.
We relate these ˙ndings to present day protein synthesis mechanisms. c 1998 Elsevier Science
B.V. All rights reserved.
PACS: 5.4; 5.7; 87.10; 82.20


Source: Aldana, Maximino - Centro de Ciencias Físicas, Universidad Nacional Autónoma de México


Collections: Physics