BioBricks submitted

BBa_K374008

This regulatory biobrick can be used in a biological circuit. Biobricks can be inserted downstream of the pR promoter, however, now expression will be allowed because of the GogR repressor. BBa_K374008 can be combined with BBa_K3740010 hence allowing expression of your inserted biobrick.

Expression of any gene located upstream of this BioBrick will not be expressed. However, any gene located downstream will be expressed. Gifsy1 is a temperate phage present in many of the Salmonella enterica serovar Typhimurium strains. This part contains the Gifsy1 promoters and the Gifsy1 repressor. The promoters are divergent; consisting of pR[Gifsy1] and pRM[Gifsy1]. Downstream of the pRM[Gifsy1] promoter is the repressor gogR. gogR binds to the operator regions located between the two divergent promoters and is predicted to act both as an activator of the pRM[Gifsy1] and a repressor of the pR[Gifsy1]. The regulatory system is similar to the one found in lambda phages but induction is repressor cleavage independent. Instead small lexA regulated anti-repressor proteins bind to the repressor and prevents its DNA activity. The part has been used and tested in E. Coli.

BBa_K374009

Divergent promoters from Gifsy2 phage and Gifsy2 repressor GtgR

Gifsy2 is a temperate phage present in many of the Salmonella enterica serovar Typhimurium strains. This part contains the Gifsy2 promoters and the Gifsy2 repressor. The promoters are divergent; consisting of pR[Gifsy2] and pRM[Gifsy2]. Downstream of the pRM[Gifsy2] promoter is the repressor gtgR. gtgR binds to the operator regions located between the two divergent promoters and is predicted to act both as an activator of the pRM[Gifsy2] and a repressor of the pR[Gifsy2]. The regulatory system is similar to the one found in lambda phages but induction is repressor cleavage independent. Instead small lexA regulated anti-repressor proteins bind to the repressor and prevents its DNA activity. The part has been used and tested in E. Coli.