Characterization of relationships between transcriptional units and operon structures in Bacillus subtilis and Escherichia coli

Table 2 Statistics of OPs, SOPs and NOPs in B. subtilis and E. coli

	B. subtilis			E. coli
	OP	SOP	NOP	OP	SOP	NOP
Number of pairs	527	182	663	811	112	1088
Median of intergenic distances (bp)	17	72	368	9	43	457
Median of correlation coefficients of co-expression	0.73	0.48	0.13	0.78	0.62	0.10
Number of co-occurrence on the same pathway maps	192	22	11	367	20	35
Number of co-occurrence on the different pathway maps	113	57	314	201	57	581

ISSN: 1471-2164