Table 1.

Poisson chi-square goodness-of-fit test for the hit-count distribution. Percentage of PWMs for which the hit-count distribution (i.e., the number of putative TFBSs in a given sequence) is well modeled by a Poisson distribution according to the chi-square goodness-of-fit test, for three values of significance. Proximal upstream sequences from 1000 randomly selected human genes were used to compute the data listed.

Matrices Database	α > 0.1	α > 0.05	α > 0.01
JASPAR	72%	80%	87%
TRANSFAC (public)	68%	74%	83%