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Table 3 The correlation between the frequency of frame-shift start and stop codons and (a) their expected frequencies; and (b) the genomic GC content. All correlations are significant at the p < 0.001 level (sample size is 167).

From: Same-strand overlapping genes in bacteria: compositional determinants of phase bias

Frame-Shift Codon Phase Combining Codons aCorrelation Observed-Expected bCorrelation Observed-GC%
Start ATG 1 NAT,GNN 0.96 -0.84
   2 NNA,TGN 0.89 -0.76
  GTG 1 NGT,GNN 0.94 -0.34
   2 NNG,TGN 0.86 0.80
  TTG 1 NTT,GNN 0.96 -0.80
   2 NNT,TGN 0.87 -0.70
Stop TAA 1 NTA,ANN 0.98 -0.87
   2 NNT,AAN 0.97 -0.93
  TAG 1 NTA,GNN 0.96 -0.89
   2 NNT,AGN 0.90 -0.84
  TGA 1 NTG,ANN 0.86 0.51
   2 NNT,GAN 0.92 -0.84