Table 3. Prevalence of recognition sites for the RM systems of C. jejuni strain NCTC11168 in phage genomes.

Phagea/Groupb	Cj0208		Cj1553c		Cj0031		Cj1051c		Cj0690c
	Totc	Fred	Tot	Fre	Tot	Fre	Tot	Fre	Tot	Fre
CP220/II	665	3.7	59	0.3	175	1.0	75	0.4	163	0.9
CPt10/II	668	3.8	59	0.3	177	1.0	73	0.4	160	0.9
CP21/II	713	3.9	66	0.4	183	1.0	75	0.4	167	0.9
CP81/III	403	3.0	57	0.4	149	1.1	79	0.6	152	1.1
NCTC12673/III	394	2.9	56	0.4	152	1.1	80	0.6	165	1.2
CPX/III	408	3.1	57	0.4	151	1.1	76	0.6	147	1.1
CP30A/III	388	2.9	53	0.4	142	1.1	75	0.6	154	1.2
CP8/III	408	3.1	57	0.4	151	1.1	76	0.6	147	1.1

^aAccession numbers: FN667788, FN667789, HE815464, FR823450, GU296433, JN132397, JX569801, JK148616;

^bGroup, phages belonging to group II have genomes of 180–190 kb whilst those in group III have genome sizes of 130–140 kb (52,53);

^cTot, total number of sites per genome;

^dFre, frequency of sites per kb.