Table 2.
Intron positions in linker regions
| Protein | Fraction | No. introns | E | O | O-E | P |
|---|---|---|---|---|---|---|
| AAT | 0.24 | 30 | 7.3 | 10 | +2.7 | 0.27 |
| ACIDAMY | 0.31 | 9 | 2.8 | 3 | +0.2 | 0.99 |
| ACYL | 0.43 | 15 | 6.5 | 5 | −1.5 | 0.43 |
| ADH | 0.22 | 38 | 8.5 | 9 | +0.5 | 0.99 |
| ALDOL | 0.31 | 17 | 5.2 | 8 | +2.8 | 0.14 |
| ALK | 0.30 | 10 | 2.9 | 1 | −1.9 | 0.18 |
| ALREDUC | 0.30 | 16 | 4.8 | 7 | +2.2 | 0.22 |
| AMY | 0.34 | 17 | 5.7 | 6 | +0.3 | 0.99 |
| CAT | 0.29 | 20 | 5.9 | 7 | +1.1 | 0.65 |
| CSYN | 0.26 | 4 | 1.0 | 1 | 0.0 | 1.0 |
| CUSOD | 0.35 | 23 | 8.1 | 4 | −4.1 | 0.07 |
| CYT | 0.31 | 7 | 2.2 | 4 | +1.8 | 0.14 |
| DHFR | 0.42 | 13 | 5.5 | 10 | +4.5 | 0.01 |
| EFTU | 0.42 | 10 | 4.2 | 5 | +0.8 | 0.68 |
| ENOL | 0.35 | 28 | 9.8 | 10 | +0.2 | 0.99 |
| G6PD | 0.28 | 19 | 5.4 | 6 | +0.6 | 0.75 |
| GAPDH | 0.40 | 46 | 18.6 | 24 | +5.4 | 0.1 |
| GLYPHOS | 0.28 | 20 | 5.6 | 8 | +2.4 | 0.22 |
| GST | 0.25 | 28 | 7.0 | 6 | −1.0 | 0.70 |
| HEMO | 0.23 | 15 | 3.4 | 8 | +4.6 | 0.005 |
| HIAMY | 0.36 | 4 | 1.4 | 1 | −0.4 | 0.68 |
| HSP70 | 0.36 | 31 | 11.1 | 16 | +4.9 | 0.07 |
| LDH | 0.27 | 11 | 3.0 | 3 | 0.0 | 1.0 |
| LYS | 0.32 | 4 | 1.3 | 1 | −0.3 | 0.99 |
| MDH | 0.22 | 23 | 5.1 | 3 | −2.1 | 0.28 |
| MNSOD | 0.26 | 12 | 3.1 | 3 | −0.1 | 0.99 |
| PFK | 0.26 | 26 | 7.5 | 14 | +6.5 | 0.006 |
| PGK | 0.41 | 20 | 8.2 | 9 | +0.8 | 0.75 |
| PGM | 0.35 | 5 | 1.8 | 2 | +0.2 | 0.99 |
| PK | 0.44 | 16 | 7.0 | 6 | −1.0 | 0.65 |
| TPI | 0.36 | 21 | 7.6 | 9 | +1.4 | 0.52 |
| XYLA | 0.35 | 12 | 4.2 | 7 | +2.8 | 0.09 |
| Total | 570 | 182.5 | 216 |
A listing for each protein of the fraction of the sequence that lies in the linker regions, the total number of intron positions, the expected (E) and observed (O) number of intron positions within the linker regions, and the excess of observed over expected (O–E). The χ2 value for the overall sum of E and O values, using a two-way test for excess inside and depletion outside, appears at the bottom: χ2 = 9.0, P < 0.003.