CODON SWAPPING AS A POSSIBLE EVOLUTIONARY MECHANISM

被引：20

作者：

SZATHMARY, E

机构：

[1] Ecological Research Group, Department of Plant Taxonomy and Ecology, Eötvös University, Budapest, H-1083

来源：

JOURNAL OF MOLECULAR EVOLUTION | 1991年 / 32卷 / 02期

关键词：

GENETIC CODE; CODON CAPTURE; CODON SWAPPING; CODON SHUFFLING; AMBIGUITY REDUCTION; MOLECULAR EVOLUTION; ORIGIN OF LIFE;

D O I：

10.1007/BF02515390

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

It is apparent in the genetic code that amino acids of similar chemical nature have similar codons. I show how through successive codon captures (multiple rounds of Osawa-Jukes type reassignments), complete codon swappings in an unfavorable genetic code are evolutionarily feasible. This mechanism could have complemented the ambiguity reduction and the vocabulary extension processes of codon-amino acid assignments. Evolution of wobble rules is implied. Transfer RNA molecules and synthetases may still carry memories of it.

引用

页码：178 / 182

页数：5

共 38 条

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