Table 3. CRISPR-associated proteins in Campylobacter concisus strains.

CRISPR
Strain ID	Cas1	Cas2	Cas3	Cas4a	Cas5h	Cas6	Csh1 family	Csh2 family	Csd2/Csh2 family	Csm1 family	Csm2 family	Csm3	Csm4 family	Csm5 family	TM1812
P2CDO5	+	+	+	+	+		+		+
P13UCO-S3	+	+	+	+	+		+		+
P15UCO-S2	+	+	+	+	+		+		+
P20CDO-S1	+	+	+	+	+				+
P20CDO-S2	+	+	+	+	+		+		+
P20CDO-S3	+	+	+	+	+				+
P21CDO-S1	+	+	+	+	+	+	+		+						+
P21CDO-S2	+	+	+	+	+		+		+
P24CDO-S2	+	+	+	+	+		+		+
P24CDO-S3	+	+	+	+	+		+		+
P24CDO-S4	+	+	+	+	+		+		+
H9O-S2	+	+	+	+					+
H14O-S1	+	+	+	+	+		+		+
H21O-S1	+	+	+	+	+	+	+		+						+
H21O-S2	+	+	+	+	+		+		+
H21O-S5	+	+	+	+	+	+	+		+	+	+	+	+	+
H23O-S1	+	+	+	+	+		+		+
13826	+	+	+	+	+		+	+
ATCC51561	+	+	+	+					+
UNSW1	+	+	+	+	+		+		+
UNSW2	+	+	+	+					+
UNSWCS	+	+	+	+		+			+

All C. concisus strains that have CRISPR-associated proteins belonged to Genomospecies 2. Letters P and H in strain ID indicate oral strains isolated from patients with inflammatory bowel disease and healthy controls respectively. The remaining five strains were enteric strains isolated from patients with Crohn’s disease and gastroenteritis. A positive sign (+) indicates the presence of a gene.