Table 1. Features of the variable chromosomal regions found in L. rhamnosus.

Region	Genes	GI	IS	Main genetic features of the region
1	LGG_00170–LGG_00177	-	-	taurine ABC transporter, conserved protein, transcriptional regulator
2	LGG_00278–LGG_00283	-	-	rhamnosyl PTS, rhamnosyltransferase
3	LGG_00341–LGG_00347	-	-	galactitol PTS, conserved protein
4	LGG_00376–LGG_00427	1	2 IS	transcriptional regulator, hypothetical protein, fructose PTS, lactose PTS, mannose PTS, conserved protein,
5	LGG_00438–LGG_00481	2	11 IS	conserved protein, SpaCBA pili cluster, transcriptional regulator, ABC transporter
6	LGG_00511–LGG_00517	-	2 IS	ABC transporter, conserved protein
7	LGG_00559–LGG_00566	-	-	conserved protein, transporter, sugar phosphate isomerase
8	LGG_01023–LGG_01029	-	3 IS	restriction/modification enzymes
9	LGG_01086–LGG_01143	3	-	conserved protein, phage-related protein
10	LGG_01515–LGG_01544	4	1 IS	phage-related protein, conserved protein
11	LGG_01955–LGG_01967	-	5 IS	conserved protein
12	LGG_01990–LGG_02003	-	1 IS	conserved protein, UDP-N-acetylglucosamine 2-epimerase, lysozyme
13	LGG_02038–LGG_02056	5	1 IS	EPS cluster
14	LGG_02199–LGG_02204	-	-	CRISPR locus
15	LGG_02610–LGG_02614	-	-	ABC transporter, conserved protein
16	LGG_02651–LGG_02686	-	1 IS	fucose transporter, conserved protein, transcriptional regulator
17	LGG_02742–LGG_02755	-	1 IS	conserved protein, fructose-bisphosphate aldolase, mannose/fructose/lactose PTS, galactitol PTS