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. 2013 Sep 3;8(9):e73569. doi: 10.1371/journal.pone.0073569

Table 2. Plasmids used in this study.

Name Description Reference
pBBRlux Vector for generating transcriptional fusion to lux, Cmr [32]
pBBRlux-amp Vector for generating transcriptional fusion to lux, bla gene was amplified with primers 1/2 and cloned into EcoRI site within cat gene This study
pET22b(+) IPTG-inducible expression vector allowing fusion of C-terminal His6 tag to the target protein, AmpR Novagen
pET22axe axe gene amplified with primers 3/4, digested with NdeI-XhoI and cloned between equivalent sites in pET22(+) This study
pET22at_axe-txe at_axe-txe fragment amplified with primers 5/6, digested with BamHI-HindIII and cloned between equivalent sites in pET22(+) This study
pluxat p at promoter-operator region amplified with primers 7/8 (209 bp), digested with SpeI-BamHI and cloned between equivalent sites in pBBRlux-amp This study
pluxat_axe fragment containing p at promoter-operator region and axe gene amplified with primers 7/9 (497 bp), digested with SpeI-BamHI and cloned between equivalent sites in pBBRlux-amp This study
pluxat_axe-txe fragment containing p at promoter-operator region and axe-txe genes amplified with primers 7/10 (708 bp), digested with SpeI-BamHI and cloned between equivalent sites in pBBRlux-amp This study
pluxaxe p axe promoter-operator region amplified with primers 9/11 (353 bp), digested with SpeI-BamHI and cloned between equivalent sites in pBBRlux-amp This study
pluxaxemut p axe promoter-operator region with mutated -10 box (site-directed mutagenesis with primers 12/13) amplified with primers 9/11 (353 bp), digested with SpeI-BamHI and cloned between equivalent sites in pBBRlux-amp This study
pluxaxe-txeW5C axe-txe genes with amino acid change in Txe protein (W5C) amplified with primers 10/11 (564 bp), digested with SpeI-BamHI and cloned between equivalent sites in pBBRlux-amp This study
pREG531 pFH450 derivative plasmid containing axe-txe cassette, used for amplifications of this module and plasmid stability tests, Cmr [24]
pREGpaxemut pREG531 derivative with p axe promoter-operator region mutated in -10 box (site-directed mutagenesis with primers 12/13) This study
pREGΔaxetxe pREG531 derivative, where axe-txe cassette was cut out with enzymes KpnI and SpeI and vector was religated This study
pTE103 Vector for generating transcription templates, contains the multicloning site from pUC8 placed upstream from a bacteriophage T7 transcriptional terminator, AmpR [33]
pTEat_axetxe fragment containing p at promoter-operator region and axe-txe genes amplified with primers 6/16, digested with EcoRI-HindIII and cloned between equivalent sites in pTE103 This study
pTEat_axetxemut fragment containing p at promoter-operator region and axe-txe genes with mutated -10 box in p axe promoter amplified with primers 6/16, digested with EcoRI-HindIII and cloned between equivalent sites in pTE103 This study
pTEaxetxeW5C axe-txe genes with amino acid change in Txe protein (W5C) amplified with primers 6/14, digested with EcoRI-HindIII and cloned between equivalent sites in pTE103 This study
pTEaxe axe and first 60 bp of txe genes amplified with primers 14/18, digested with EcoRI-HindIII and cloned between equivalent sites in pTE103 This study
pTEat_axe-txe_ter fragment containing p at promoter-operator region and axe-txe genes along with the terminator region downstream of txe, amplified with primers 16/17, digested with EcoRI-BamHI and cloned between equivalent sites in pTE103 This study