Variable correlation of genome GC% with transfer RNA number as well as with transfer RNA diversity among bacterial groups: alpha-proteobacteria and tenericutes exhibit strong positive correlation.

Abstract excerpt

Mainly two selective forces are thought to affect transfer RNA (tRNA) gene numbers in cells: firstly, transfer RNA genes have coevolved with codon usage to optimize the translation rate in organisms; and secondly, tRNA gene number is positively correlated with growth rate of organisms. Since a co...

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