Table S6: Occurrence rate of genes within significant clusters in the frl operon


Group	frlA	frlB	frlC	frlD	frlR
Acidobacteria	0.0%	0.0%	0.0%	0.0%	0.0%
Actinobacteria	0.0%	0.0%	0.0%	0.0%	0.0%
Alphaproteobacteria	0.0%	0.0%	0.0%	0.0%	0.0%
Betaproteobacteria	0.0%	0.0%	0.0%	0.0%	0.0%
Deltaproteobacteria	0.0%	0.0%	0.0%	0.0%	0.0%
Epsilonproteobacteria	0.0%	0.0%	0.0%	0.0%	0.0%
Gammaproteobacteria	5.1%	8.2%	8.2%	8.2%	8.2%
Aquificae	0.0%	0.0%	0.0%	0.0%	0.0%
Bacteroidetes/Chlorobi	0.0%	0.0%	0.0%	0.0%	0.0%
Chlamydiae/Verrucomicrobia	0.0%	0.0%	0.0%	0.0%	0.0%
Chloroflexi	0.0%	0.0%	0.0%	0.0%	0.0%
Cyanobacteria	0.0%	0.0%	0.0%	0.0%	0.0%
Deinococcus-Thermus	0.0%	0.0%	0.0%	0.0%	0.0%
Firmicutes	0.0%	1.1%	1.1%	1.1%	1.1%
Fusobacteria	0.0%	0.0%	0.0%	0.0%	0.0%
Planctomycetes	0.0%	0.0%	0.0%	0.0%	0.0%
Spirochaetes	0.0%	0.0%	0.0%	0.0%	0.0%
Thermotogae	0.0%	0.0%	0.0%	0.0%	0.0%
Total	1.2%	2.2%	2.2%	2.2%	2.2%