PMID: 2496227Jan 1, 1989Paper

Codon usage in Tetrahymena and other ciliates

The Journal of protozoology
D W Martindale

Abstract

Codon usage in ciliates was examined by analyzing the coding regions of 22 ciliate genes corresponding to a total of 26,142 nucleotides (8,714 codons). It was found that Tetrahymena, Paramecium and the hypotrichs (Oxytricha and Stylonychia) differed in which synonymous codons were used most frequently by their genes. In fact, the codon choices in highly expressed Tetrahymena genes were more similar to those of yeast genes than those of Paramecium genes. The ciliates do not appear to have unusually strong biases in codon usage frequency when compared to other protists such as yeast. The analysis of the Tetrahymena genes indicated that genes which are highly expressed during normal cell growth have a stronger bias towards using the "preferred" codons than those expressed at lower levels during growth or for brief periods during processes such as conjugation. This conforms to what is found in other protists.

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Citations

May 1, 1992·Journal of Molecular Evolution·G B VohraR E Pearlman
Jul 1, 1991·Chromosoma·L J HauserD E Olins
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