Table 3. Number of che gene homologs in E.coli, B. sp. SJ98, B. sp.YI23, B. sp. CCGE 1001, B. sp. CCGE 1002 and B. sp. CCGE 1003.

	Species
Gene	E.coli	Burkholderia sp. SJ98	Burkholderia sp. YI23	Burkholderia sp. CCGE 1001	Burkholderia sp. CCGE 1002	Burkholderia sp. CCGE 1003
CheA	1	2	2	2	2	3
CheB	1	4	2	4	3	3
CheC	0	1	0	2	1	2
CheR	1	3	3	2	2	3
CheW	1	5	4	2	2	3
CheY	1	2	1	0	0	0
CheZ	1	1	1	1	2	1
MCPs	4	19	12	22	21	32
Total	10	37	25	35	33	47