Table 3. Families of transposable elements in the Octadecabacter strains.

	O. arcticus 238			O. antarcticus 307
Family	Genesa	Pseudo-genes	Totalb	Genesa	Pseudo-genes	Totalb
IS3c	177	30	207	137	49	186
IS4	0	0	0	1	1	2
IS5d	44	19	63	34	8	42
IS6	25	4	29	12	3	15
IS10	7	8	15	0	0	0
IS21	11	0	11	13	4	17
IS30	45	17	62	8	0	8
IS66	66	15	81	2	1	3
IS91	22	5	27	12	0	12
IS110	17	4	21	33	39	72
IS200/IS605	38	2	40	14	0	14
IS204/IS1001/IS1096/IS1165	0	2	2	0	0	0
IS256	72	21	93	9	3	12
IS481	33	3	36	1	16	17
IS630	73	10	83	2	3	5
IS116/IS110/IS902	1	0	1	0	0	0
IS1182	0	0	0	1	14	15
IS1380	1	0	1	2	0	2
IS1595	33	1	34	20	3	23
ISAs1	28	2	30	0	0	0
ISL3	29	10	39	0	0	0
P4-integrase	1	0	1	0	0	0
ISNCY	1	2	3	0	0	0
unclassified	188	108	296	60	121	181
Total TEs	912	263	1175	361	265	626

^aProtein-coding genes.

^bProtein-coding genes and pseudogenes.

^cRepresented subgroups: IS3, IS51, IS407, IS150 [61].

^dRepresented subgroups: IS5, IS427, IS903, IS1031 [61].