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BMC Genomics. 2010 Feb 18;11:118. doi: 10.1186/1471-2164-11-118.

Increased incidence of rare codon clusters at 5' and 3' gene termini: implications for function.

Author information

  • 1Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.

Abstract

BACKGROUND:

The process of translation can be affected by the use of rare versus common codons within the mRNA transcript.

RESULTS:

Here, we show that rare codons are enriched at the 5' and 3' termini of genes from E. coli and other prokaryotes. Genes predicted to be secreted show significant enrichment in 5' rare codon clusters, but not 3' rare codon clusters. Surprisingly, no correlation between 5' mRNA structure and rare codon usage was observed.

CONCLUSIONS:

Potential functional roles for the enrichment of rare codons at terminal positions are explored.

PMID:
20167116
[PubMed - indexed for MEDLINE]
PMCID:
PMC2833160
Free PMC Article

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