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Table 2 Expected versus observed OSC frequencies of selected genomes with non-standard genetic codes.

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

Species Expected OSC counts (per 100 codons) (mean ± SD) Observed OSC counts (per 100 codons) p-value
Entomoplasmatales &Mycoplasmatales (translation table 4)    
   Mesoplasma florum L1 16.653 ± 0.066 17.233 1.81 × 10-190
   Mycoplasma agalactiae PG2 16.698 ± 0.069 17.053 4.06 × 10-145
   Ureaplasma urealyticum 18.169 ± 0.076 18.154 0.00512
Vertebrate mitochondria (translation table 2)    
   Homo sapiens 16.107 ± 0.688 16.176 0.162
   Rattus norvegicus strain Wistar 17.937 ± 0.674 17.950 0.777
Yeast mitochondria (translation table 3)    
   Saccharomyces cerevisiae 23.178 ± 0.399 23.154 0.408
   Candida glabrata 25.924 ± 0.675 26.008 0.0809
Ascidian mitochondria (translation table 13)    
   Ciona savignyi 18.447 ± 0.545 18.506 0.127
  1. Values are expressed as number of OSC per 100 codons.