Genome-wide analysis of myxobacterial two-component systems: genome relatedness and evolutionary changes

BMC Genomics

Table 2 Two-component gene sets of the myxobacteria

Genome^a	TCS genes	Non-hybrid HKs	Hybrid HKs	PPs	RRs	% hybrid HKs	% TM HKs	% orphan	% paired	% complex	Intricate foci
Mx	282	103	37	5	137	26.4	47	35	35	30	8
Mf	288	98	49	3	138	33.3	41	34	33	33	9
Cc	306	106	56	2	142	34.6	38	34	35	31	8
Sa	338	124	70	4	142	36.1	40	34	34	32	9
AdC	188	68	17	1	102	20.2	48	43	35	22	2
Ad1	187	69	19	1	98	21.6	50	40	34	26	2
AF	207	72	35	0	100	33.3	50	28	33	39	5
AK	191	72	18	0	101	20.0	49	41	35	24	2
Sc	273	101	50	1	121	33.1	41	37	27	37	9
Ca	301	109	50	2	140	31.4	45	N/A	N/A	N/A	N/A
Ho	191	53	51	3	84	49.0	35	35	38	27	5
Pp	160	60	26	5	69	30.2	42	N/A	N/A	N/A	N/A
Myxobacterial mean:	242.7	86	39.8	2.3	114.5	30.8	44	36	34	30	5.9
Bn	92	32	16	2	42	33.3	73	37	48	18	4
Bacterial mean:^b	31	14.8	3.3	0.6	15.6	18.2	63.5	46	40	14	0.3

For each genome, the numbers of TCS genes are presented, broken down by type. HKs are characterised according to the percentages that are hybrid proteins and that contain transmembrane helices. Genomic TCS gene organisation is also presented as the percentage of TCS genes which are orphaned, paired or in complex gene clusters. Values are presented for Bdellovibrio bacteriovorus (Bb), and the myxobacterial and bacterial means are also shown for comparison
^a Ho = Haliangium ochraceum DSM 14365, Pp = Plesiocystis pacifica SIR-1, Sc = Sorangium cellulosum So ce 56, Ca = Chondromyces apiculatus DSM 436, Mx = Myxococcus xanthus DK1622, Mf = Myxococcus fulvus HW-1, Cc = Corallococcus coralloides DSM 2259, Sa = Stigmatella aurantiaca DW3/4-1, AK = Anaeromyxobacter sp. K, AF = Anaeromyxobacter sp. Fw109-5, Ad1 = Anaeromyxobacter dehalogenans 2CP-1, AdC = Anaeromyxobacter dehalogenans 2CP-C, and Bb = Bdellovibrio bacteriovorus HD100
^bCalculated from Williams and Whitworth [24]

ISSN: 1471-2164