Table 2.

Inventory and distribution of CRISPR1 repeat sequences among S. agalactiae CC.

Type	Repeat sequence (5′- 3′)	Frequency (%)	Clonal complex or ST(No. of strains)
Internal repeat
Typical repeat	GTTTTAGAGCTGTGCTGTTTCGAATGGTTCCAAAAC	98.5	CC-1 (26)CC-10 (25)CC-17 (30)CC-19 (14)CC-23 (26)ST-4 (1)ST-388 (2)ST-130 (1)ST-24 (1)
Repeat variants	GTTTTAGTGCTGTGCTGTTTCGAATGGTTCCAAAAC	0.1	CC-17 (2)*
	GTTTTAGAGCTGTGCTATTTCGAATGGTTCCAAAAC	0.1	CC-23 (1)*
	GTTTTAGAGCTGTGTTGTTTCGAATGGTTCCAAAAC	1.2	CC-23 (4)*
	GTTTTAAAGCTGTGCTGTTTCGAATGGTTCCAAAAC	0.1	CC-19 (1)*
Terminal repeat
Typical terminal repeat	GTTTTAGAGCTGTGCTGTTATTATGCTAGGACATCA	52	CC-1 (26)CC-10 (25)CC-19 (14)ST-4 (1)
Terminal repeat variants	GTTTTAGAGCTGTGCGGTTATTATGCTAGGGCACCG	25	CC-17 (30)ST-130 (1)
	GTTTTAAAGCTGTGCTGTTATTATGCTAGGGCACCA	21.5	CC-23 (26)ST-24 (1)
	GTTTTAGAGCTGTGCTGTTATTATGCTAGGGCACCA	1.5	ST-388 (2)

Nucleotide polymorphisms as compared to the typical CRISPR repeat sequence are indicated in red.

*All CRISPR1 arrays with at least a repeat variant contain also the typical repeat.