Supporting information for Zhang et al. (2003) Proc. Natl. Acad. Sci. USA, 10.1073/pnas.2627983100
Table 11. Effect of boundary distance (d) on the analysis of chromosomal clustering of genes whose expression was altered in common between senescence and quiescence or specifically during quiescence in human fibroblasts
No. of genes | Chr. distances | No. of clusters | P value | No. of clustered genes | P value | |||
Observed | Expected | Observed | Expected | |||||
Proliferative arrest-associated up-regulation | 246 | 1 kb | 1 | 0.07 | 0.002 | 2 | 0.13 | 0.002 |
2 kb | 3 | 0.17 | <0.001 | 6 | 0.34 | <0.001 | ||
5 kb | 5 | 0.49 | <0.001 | 10 | 0.98 | <0.001 | ||
10 kb | 7 | 0.77 | <0.001 | 14 | 1.53 | <0.001 | ||
20 kb | 7 | 1.28 | <0.001 | 14 | 2.56 | <0.001 | ||
50 kb | 7 | 2.68 | 0.005 | 14 | 5.38 | 0.006 | ||
100 kb | 10 | 4.5 | 0.005 | 20 | 9.06 | 0.006 | ||
200 kb | 14 | 7.95 | 0.011 | 28 | 16.1 | 0.016 | ||
500 kb | 25 | 16.1 | 0.002 | 53 | 33.2 | 0.001 | ||
1 Mb | 42 | 25.6 | <0.001 | 87 | 53.8 | <0.001 | ||
2 Mb | 49 | 38.7 | 0.003 | 117 | 84.7 | <0.001 | ||
5 Mb | 56 | 56.6 | 0.521 | 155 | 135.1 | 0.007 | ||
Quiescence specific up-regulation | 282 | 1 kb | 0 | 0.06 | 0.06 | 0 | 0.13 | 0.06 |
2 kb | 2 | 0.24 | 0.002 | 4 | 0.47 | 0.002 | ||
5 kb | 3 | 0.6 | 0.002 | 6 | 1.2 | 0.002 | ||
10 kb | 3 | 1.02 | 0.032 | 6 | 2.04 | 0.032 | ||
20 kb | 5 | 1.67 | 0.004 | 10 | 3.36 | 0.004 | ||
50 kb | 5 | 3.43 | 0.109 | 10 | 6.9 | 0.117 | ||
100 kb | 6 | 5.94 | 0.379 | 12 | 12 | 0.395 | ||
200 kb | 12 | 10.3 | 0.224 | 24 | 21 | 0.253 | ||
500 kb | 16 | 20.4 | 0.852 | 32 | 42.3 | 0.897 | ||
1 Mb | 28 | 32.6 | 0.833 | 58 | 69.1 | 0.88 | ||
2 Mb | 46 | 47.6 | 0.6 | 99 | 105.6 | 0.733 | ||
5 Mb | 69 | 67.5 | 0.311 | 165 | 165.5 | 0.499 | ||
Proliferative arrest-associated down-regulation | 365 | 1 kb | 0 | 0.2 | 0.144 | 0 | 0.3 | 0.144 |
2 kb | 1 | 0.4 | 0.07 | 2 | 0.9 | 0.07 | ||
5 kb | 1 | 1 | 0.286 | 2 | 2.1 | 0.287 | ||
10 kb | 1 | 1.8 | 0.543 | 3 | 3.6 | 0.543 | ||
20 kb | 4 | 2.8 | 0.138 | 9 | 5.7 | 0.138 | ||
50 kb | 10 | 5.8 | 0.034 | 21 | 11.7 | 0.034 | ||
100 kb | 16 | 9.8 | 0.016 | 33 | 19.8 | 0.016 | ||
200 kb | 26 | 16.7 | 0.006 | 54 | 34.1 | 0.004 | ||
500 kb | 38 | 32.5 | 0.098 | 81 | 68 | 0.086 | ||
1 Mb | 61 | 66.3 | 0.8 | 135 | 144.2 | 0.76 | ||
2 Mb | 86 | 92.8 | 0.895 | 202 | 213.9 | 0.825 | ||
5 Mb | 105 | 122.4 | 1 | 271 | 318.9 | 1 | ||
Quiescence specific down-regulation | 250 | 1 kb | 1 | 0.07 | 0.003 | 2 | 0.14 | 0.003 |
2 kb | 1 | 0.19 | 0.008 | 2 | 0.39 | 0.008 | ||
5 kb | 2 | 0.48 | 0.016 | 4 | 0.96 | 0.016 | ||
10 kb | 2 | 0.79 | 0.045 | 4 | 1.58 | 0.046 | ||
20 kb | 3 | 1.36 | 0.047 | 6 | 2.73 | 0.048 | ||
50 kb | 6 | 2.72 | 0.023 | 12 | 5.45 | 0.024 | ||
100 kb | 14 | 4.67 | <0.001 | 28 | 9.42 | <0.001 | ||
200 kb | 19 | 8.19 | <0.001 | 38 | 16.6 | <0.001 | ||
500 kb | 30 | 16.7 | <0.001 | 63 | 34.3 | <0.001 | ||
1 Mb | 35 | 26.3 | 0.014 | 78 | 55.4 | 0.006 | ||
2 Mb | 43 | 39.4 | 0.163 | 105 | 86.6 | 0.017 | ||
5 Mb | 54 | 57.8 | 0.792 | 150 | 138.6 | 0.085 |
A chromosomal cluster was defined as two or more genes located within the specified distance. Observed values indicate the number of chromosomal clusters identified by using the parameters shown and the number of genes present in those clusters. Expected values indicate the average number of false-positive clusters or false-positive clustered genes estimated by a bootstrapping algorithm as described in Materials and Methods. The P value indicates the probability that the difference between the observed and calculated incidence of clusters or clustered genes is due to random chance.