Synonymous codon usage in genes from the ascomycete (filamentous) fungus Aspergillus nidulans has been investigated. A total of 45 gene sequences has been analysed. Multivariate statistical analysis has been used to identify a single major trend among genes. At one end of this trend are lowly expres
Codon usage in streptococci
โ Scribed by Dr. Horst Malke
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 493 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0233-111X
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โฆ Synopsis
Codon usage was analysed for 14 streptococcal genes or significant open reading frames and found to be different from that in Escherichia coli and Bacillus subtilis. In particular, the preferred use of WWT codons over WWC was inconsistent with the rule of optimal codon-anticodon interaction energy. On the other hand, for SSTC codons, adherence to this rule was better in streptococci than in E. coli. A preliminary codon bias table generated with the Pustell computer program for the analysed streptococcal genes may prove useful for the detection of protein coding regions in newly sequenced DNAs from both streptococci and staphylococci.
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An analysis of 4680 codons expressed by pathogenic Entamoeba histolytica showed the A+U content of coding sequences to be 67%. The preference for A+U resulted in an unusual codon usage with an A+U content of 84% in the third codon position. The data show a remarkable similarity to those obtained for
## SUMMARY Human papillomavirus (HPV) genomes, similar to other virus genomes, frequently have a Gโ+โC content significantly different from their host species. The HPV genomes show a strong codon usage bias to 18 codons, with 14 showing T at the third position amongst degenerately encoded amino aci