TABLE 2 .

Distribution of spacers with matches among bacterial and archaeal phyla

Phylum or group and species	Total no. of spacersa	No. of spacers with matchesa	% of spacers with matches	Spacers with matches inb:
				Viral	Intergenic	ORFs
Actinobacteria	54,875	3,614	0.07	0.76	0.05	0.19
Alphaproteobacteria	8,135	120	0.01	0.69	0.07	0.24
Bacteroidetes/Chlorobi	18,611	840	0.05	0.78	0.03	0.19
Betaproteobacteria	14,013	908	0.06	0.69	0.14	0.16
Chloroflexi	6,523	30	0.00	0.77	0.03	0.20
Crenarchaeota	11,212	119	0.01	0.90	0.02	0.08
Cyanobacteria/ Melainabacteria	20,295	126	0.01	0.75	0.04	0.21
Deinococcus-Thermus	4,057	85	0.02	0.75	0.04	0.21
Deltaproteobacteria or Epsilonproteobacteria	13,588	378	0.03	0.60	0.06	0.34
Firmicutes	93,332	7,643	0.08	0.90	0.02	0.08
Fusobacteria	3,427	629	0.18	0.92	0.01	0.06
Gammaproteobacteria	67,202	10,238	0.15	0.91	0.03	0.06
Halobacteria	5,121	74	0.01	0.55	0.08	0.36
Methanobacteria	2,218	47	0.02	0.70	0.04	0.26
Methanococci	1,639	6	0.00	0.50	0.00	0.50
Methanomicrobia	10,399	141	0.01	0.91	0.02	0.06
Nitrospira	1,088	13	0.01	0.85	0.00	0.15
Planctomycetes	1,650	14	0.01	0.79	0.14	0.07
Spirochaetia	5,114	1,173	0.23	0.73	0.04	0.24
Synergistia	1,702	22	0.01	0.64	0.00	0.36
Tenericutes	1,050	26	0.02	0.73	0.04	0.23
Thermococci	3,210	16	0.00	0.31	0.00	0.69
Thermoplasmata	1,270	6	0.00	0.17	0.17	0.67
Thermotogae	3,731	31	0.01	0.94	0.00	0.06
Unclassified bacteria	2,814	6	0.00	0.67	0.00	0.33
Total	356,276	26,305	0.07

^aOnly phyla with >1,000 unique spacers were included; hence, the data reflect slightly lower total numbers of spacers than data in Table 1.

^bThe percentage of the total number of spacers with matches.