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Analysis of synonymous codon usage patterns in torque teno sus virus 1 (TTSuV1)
Zhicheng Zhang1, Wei Dai, Yang Wang
1Nanjing Agricultural University, Nanjing, China.
Archives of Virology
|September 27, 2012
Summary
Torque teno sus virus 1 (TTSuV1) evolution is shaped by both mutation pressure and natural selection. Analysis of codon usage patterns in TTSuV1 genomes reveals variations influenced by geographical origin and base composition.
Area of Science:
- Virology
- Molecular Evolution
- Bioinformatics
Background:
- Torque teno sus virus 1 (TTSuV1) is a widespread swine virus.
- Understanding viral evolution requires analyzing codon usage patterns.
Purpose of the Study:
- To examine synonymous codon usage patterns and determinants in TTSuV1 genomes.
- To identify factors influencing codon usage bias in TTSuV1.
Main Methods:
- Analysis of nucleotide content and relative synonymous codon usage (RSCU) in 29 TTSuV1 genomes.
- Correspondence analysis (COA), Spearman's rank correlation, and ENC plots were employed.
Main Results:
- Preferential codon usage in TTSuV1 favors nucleotides A or C.
- Codon usage bias and GC content were lower, influenced by base composition and ENC values.
- Significant variations in codon usage patterns were observed among TTSuV1 isolates from different countries.
Conclusions:
- Synonymous codon usage in TTSuV1 genomes results from an interplay between mutation pressure and natural selection.
- Findings offer insights into TTSuV1 molecular evolution and factors affecting its codon usage.
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