Table 1.

Strains and plasmids used in this study

Strain or plasmid	Relevant characteristics or sequence	Source orreference
Streptococcus mutans
UA159	American type culture collection (ATCC 700610)	Ajdic et al. (2002)
E. coli
HB101	recA thi pro leu hsdRM, Smr; strain used for maintenance and proliferation of plasmids	Kessler et al. (1992)
DH5α	F−, ϕ80dlacZΔM15, Δ(lacZYA-argF)U169, deoR, recA1, endA1, hsdR17(rk−, mk+), phoA, supE44, λ−, thi-1, gyrA96, relA1	Invitrogen
Plasmids
pBTn	1.45 kbp ermB fragment of Tn551, xylose-inducible promoter and xylR, Himar1 transpose gene	Li et al. (2009)
pTV1-OK	repATs-pWV01Ts aphA3 Tn917(erm)	Gutierrez et al. (1996)
pMN100	repATs-pWV01Ts aphA3 1.45 kbp ermB fragment of Tn551, xylose-inducible promoter and xylR, Himar1 transpose gene	This study