Table 1. Comparison of protein abundance among genes with different lengths (L) of pre-AUG poly(A).
| L | N | Mean | SD |
|---|---|---|---|
| 2 | 275 | 7.9081 | 1.4264 |
| 3 | 523 | 8.0553 | 1.6128 |
| 4 | 599 | 8.1663 | 1.5917 |
| 5 | 355 | 8.2830 | 1.7301 |
| 6 | 187 | 8.1552 | 1.7907 |
| 7 | 114 | 8.1861 | 1.6532 |
| 8 | 66 | 8.6858 | 1.7825 |
| 9 | 34 | 8.3668 | 1.5573 |
| 10 | 20 | 7.7982 | 1.6347 |
| 11 | 18 | 9.2160 | 1.5686 |
| 12 | 12 | 7.2013 | 1.4117 |
| 13 | 4 | 7.6616 | 0.4500 |
| 14 | 4 | 7.4732 | 1.8465 |
| 15 | 5 | 7.6702 | 1.6804 |
| 16 | 4 | 7.8449 | 1.1042 |
The differences are statistically significant (F = 2.32, DFmodel = 14, DFerror = 2205, P = 0.0036). The P-value would be reduced to 0.0004 if the genes with poly(A) length ≥12 were lumped into one group. A gene (YJR113C) with an A21 in its 5′-UTR was included into the group of genes with a A16.