Web21. okt 2016. · LexA is a transcriptional repressor that modulates the SOS regulon , and the expression of qnrB genes containing LexA binding sequences is induced as a part of the SOS response to a number of environmental stimuli, including quinolone exposure (25, 26). No analogous LexA binding sites are found within other qnr gene families. Web12. okt 2007. · LexA1 and LexA2 binding sites and their positions with respect to the ATG translational starting codon are indicated. The bent arrows indicate the positions of the oligonucleotides used to obtain the PP_3901 promoter probe for EMSA experiments.

A Chemically Inducible Gene Expression System and Its …

WebThe 3.5-fold repression by TrpR in vivo disappeared when a tight LexA binding site was introduced at various sites near the trpO, suggesting that the binding of LexA blocks one-dimensional ... Web12. okt 2007. · The presence of two different LexA proteins that do not recognize the same binding site is an uncommon feature in the domain Bacteria that can provide clues … new frontier routes

Structure of the LexA–DNA complex and implications for …

Web28. jun 2024. · To probe specific binding of LexA to SOS boxes, we transformed cells with pUC19 plasmids carrying promoters that are regulated by LexA, or the constitutive … WebIn addition, a plasmid with a mutation in one of the two LexA repressor binding sites in the cea regulatory region was isolated that decreases homology with the consensus LexA … WebLexA forms de facto a two-component regulatory system with RecA, which senses DNA damage at stalled replication forks, forming monofilaments and acquiring an active … new frontier rv