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Table 1 Expected versus observed OSC frequencies of selected genomes under models of different compositional biases.

From: Natural selection retains overrepresented out-of-frame stop codons against frameshift peptides in prokaryotes

Organism

Phylogenetic division

G+C% of coding region

Expected OSC frequency under different compositional models

Observed OSC frequency

   

Codon usage bias

Dipeptide bias

Dicodon bias

Trinucleotide bias (2ndorder Markov model)

Hexanucleotide bias (5thorder Markov model)

 

Laribacter hongkongensis

Beta-proteobacteria

63.5%

6.068 ± 0.025

6.190 ± 0.024

5.024 ± 0.022

4.947 ± 0.021

5.020 ± 0.021

5.030

Staphylococcus aureus

Firmicutes

33.6%

19.789 ± 0.038

20.158 ± 0.037

20.501 ± 0.042

20.483 ± 0.044

20.482 ± 0.042

20.512

Yersinia enterocolitica

Gamma-proteobacteria

48.4%

12.530 ± 0.026

12.825 ± 0.028

12.902 ± 0.026

12.848 ± 0.028

12.890 ± 0.030

12.912

Thermotoga maritima

Thermotogae

46.4%

12.626 ± 0.042

12.177 ± 0.039

10.532 ± 0.042

10.501 ± 0.038

10.519 ± 0.037

10.534

Deinococcus radiodurans

Deinococcus-Thermus

67.7%

4.619 ± 0.021

5.118 ± 0.023

4.371 ± 0.021

4.295 ± 0.022

4.369 ± 0.021

4.375

Pyrococcus furiosus

Euryarchaeota

41.1%

17.385 ± 0.046

16.927 ± 0.044

16.567 ± 0.050

17.520 ± 0.048

17.557 ± 0.046

17.574

  1. Values are expressed as (mean ± SD) number of OSC per 100 codons.