Table 1. General features of 14 plasmids of genus Listeria.

Host	Plasmid	Isolation	Status	Length [bp]	ORFsa	MGEsb	Mean Number of Amino Acids per CDS	Source/Accession
L. monocytogenes 1/2b Lm1	pLM33	cheese	closed	32307	36	9	258	GU244485
L. monocytogenes 1/2a FSL F2-515	pF2-515	meat	contigs (11)	37163	61	12	131	Broad Institutec
L. monocytogenes 7 UG1 SLCC2482	pLM7UG1	human	closed	50100	55	13	260	FR667690
L. monocytogenes 1/2c UG1 SLCC2372	pLM1-2cUG1	human	closed	50100	54	13	264	FR667691
L. monocytogenes 1/2b FSL J1.194	pJ1-194	human	contigs (1)	57536	69	16	223	Broad Institutec
L. monocytogenes 1/2b UG1 SLCC2755	pLM1-2bUG1	human	closed	57780	63	16	261	FR667692
L. monocytogenes 1/2b FSL R2-503	pR2-503	human	contigs (3)	56540	86	20	159	Broad Institutec
L. monocytogenes 4b FSL N1-017	pN1-017	trout	contigs (3)	56037	62	13	245	Broad Institutec
L. monocytogenes 1/2a 08-5578	pLM5578	human	closed	77054	76	11	291	CP001603
L. monocytogenes 1/2a J0161	pLMJ0161	human	contigs (2)	82700	90	10	266	Broad Institutec
L. monocytogenes 4b H7858	pLM80	meat	contigs (2)	81588	88	11	264	AADR01000010, AADR01000058
L. grayi subspecies grayi UG1 DSM20601	pLGUG1	chinchilla	closed	79249	99	8	224	FR667693
L. innocua 6a Clip11262	pLI100	cheese	closed	81905	84	24	273	AL592102
L. monocytogenes 4 DRDC8	pCT100	milk	closed	37279	34	6	292	U15554

^aOpen Reading Frames.

^bMobile Genetic Elements.

^chttp://www.broad.mit.edu/annotation/genome/listeria_group.

Plasmid length does not include spacers which were inserted between contigs. All genes automatically predicted by GenDB [58] to encode a recombinase, transposase, integrase, invertase or resolvase are denoted as mobile genetic element (MGE).