Genome-wide analysis of chromatin features identifies histone modification sensitive and insensitive yeast transcription factors

Table 2 Transcription factor histone sensitivity relates to hierarchical level in a regulatory network

Hierarchical levels in regulatory network	Number of histone-sensitive TFs	Number of histone-insensitive TFs
Bottom level
Level 1	15	52
Upper levels
Level 2	43	36
Level 3	6	8
Level 4	2	4
Total	51	48

Fisher exact test P-value = 0.0007 for separate levels; P-value = 0.0002 for combined upper levels.

ISSN: 1474-760X