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Table 2 Comparison of compactness between genes expressed at different levelsa

From: Evidence against the energetic cost hypothesis for the short introns in highly expressed genes

  Average intron length Total intron length Intron number CDS length UTR length Expression level
Human genes
Top 30% quantile 2768 ± 608 28117 ± 7347 8 ± 1 1313 ± 90 775 ± 107 5369 ± 770
Versus       
Bottom 30% quantile 10448 ± 4237 901046 ± 33210 9 ± 1 1764 ± 232 1478 ± 244 267 ± 14
  P = 0.001 P = 0.019 P = 0.844 P = 0.273 0.019  
Mouse genes
Top 30% quantile 2631 ± 290 16190 ± 1828 7 ± 1 1214 ± 65 779 ± 136 6219 ± 794
versus       
bottom 30% quantile 8032 ± 2706 37391 ± 4615 8 ± 1 1450 ± 128 1496 ± 190 365 ± 16
  P = 0.001 P = 0.001 P = 0.444 P = 0.589 P = 0.001  
  1. a The human genes and the mouse genes are those analyzed in Figure 1. We used the Mann-Whitney U test to determine the significance of differences. For each case, we present the average value ± standard error of mean.