TABLE 1.

E. faecalis strains

Strain	Relevant characteristic	Reference
OG1X	Plasmid free	13
OG1X/pAM721	pAD1 derivative containing Tn917 insertion within regulatory region of asa-1 resulting in constitutive expression of AS	12
OG1X/pAM944	pAD1 derivative containing Tn917 insertion in asa-1 resulting in secretion of truncated AS	7, 13