Table 1.

Summary of mazEF/pemIK loci occurrence among the analysed species and strains.

No.	mazEF/pemIK homologue	Number of species	Percent of species	Number of strains	Percent of strains	Location in the analysed strains
1.	mazEF-Sa	36	100.00	6121	99.82	chromosome
2.	pemIK-Sa1	12	33.33	65	1.06	chromosome, plasmid
3.	pemIK-Sa2	1	2.78	8	0.13	undetermined
4.	pemIK-Sa3	1	2.78	1	0.02	undetermined
5.	pemIK-Sa4	1	2.78	3	0.05	plasmid (putatively)
6.	pemIK-Sa5	1	2.78	3	0.05	plasmid (putatively)
7.	pemIK-Sa6	1	2.78	1	0.02	chromosome
8.	pemIK-Scap	2	5.56	3	0.05	plasmid
9.	pemIK-Scar	3	8.33	6	0.10	chromosome (putatively)
10.	pemIK-Smic	1	2.78	1	0.02	chromosome (putatively)
11.	pemIK-Ssci	2	5.56	7	0.11	plasmid (putatively)
12.	pemIK-Swar	3	8.33	11	0.18	plasmid (putatively)
	Total TA carriers:	36	100.00	6121	99.82
	Total analysed:	36		6132