Results 271 to 280 of about 1,107,083 (308)
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Codon usage in Plasmodium falciparum
Molecular and Biochemical Parasitology, 1988The codon frequencies used in 7874 codons from 17 sequences of Plasmodium falciparum have been examined. The frequency distribution is markedly biased. A and C occur with similar frequency in all positions but G is predominantly in the first base and T is predominantly in the last position.
A, Saul, D, Battistutta
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Codon usage and genome composition
Journal of Molecular Evolution, 1985The GC levels of codon third positions from 49 genomes covering a wide phylogenetic range are linearly correlated with the GC levels of the corresponding genomes. Three different relationships have been found: one for prokaryotes and viruses, one for lower eukaryotes, and one for vertebrates. All points not fitting the first relationship can be brought
G, Bernardi, G, Bernardi
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Codon Usage and Selection on Proteins
Journal of Molecular Evolution, 2006Selection pressures on proteins are usually measured by comparing homologous nucleotide sequences (Zuckerkandl and Pauling 1965). Recently we introduced a novel method, termed volatility, to estimate selection pressures on proteins on the basis of their synonymous codon usage (Plotkin and Dushoff 2003; Plotkin et al. 2004).
Joshua B, Plotkin +3 more
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1995
Abstract It should be safe to assume that two synonymous codons in a 2-codon set, or four in a family box, are used evenly. However, there are almost no such examples. Synonymous codon usage is not ‘symmetrical’. It is more or less, and sometimes extremely, uneven in any gene in a single species.
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Abstract It should be safe to assume that two synonymous codons in a 2-codon set, or four in a family box, are used evenly. However, there are almost no such examples. Synonymous codon usage is not ‘symmetrical’. It is more or less, and sometimes extremely, uneven in any gene in a single species.
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Codon usage bias in herpesvirus
Archives of Virology, 2010In this study, I present a comprehensive analysis of codon usage bias in 43 herpesviruses for which the whole genome has been sequenced. The values of the effective number of codons revealed that the majority of the herpesviruses did not have high codon bias, with the exceptions of only simplexviruses and some varicelloviruses.
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Codon Usage and Evolutionary Rates of Proteins
Journal of Theoretical Biology, 1994The 61 codons and the three terminators were counted in the coding sequences of 31 families of proteins of higher vertebrates. The protein families were ordered according to their evolutionary rate. In each family, the ratio between the Observed and Expected frequency of each codon was obtained (O/E ratio). A strong and significant positive correlation
BARRAI I +5 more
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Codon usage and intragenic position
Journal of Theoretical Biology, 1988Data on codon usage bias in E. coli are re-examined with respect to intragenic position. The bias is less extreme near the beginning than in the rest of the gene, particularly in highly expressed genes. This is contrary to the previous finding that there is a linear decline in codon usage bias with position along weakly expressed genes but little or no
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