Template:SBB12 part sbb1216

Partname:     sbb1216
Featurename:  cI-N-AmilCP-B
Genename:     cI, AmilCP
Source:       Lambda phage / via the Registry

This one is a little different. You aren't putting a homodimer onto ToxR; you're building out a different homodimerization system. You're replacing ToxR with a different dimerization reporter, and then fusing it with amilCP, a very blue protein, which will facilitate future cloning. This one is the cI transcription repressor from lambda phage, which has been shown to do similar reporting of homodimerization as is reported for ToxR (see PMID: 10411275).

Your final construct should be a normal BglBricks part in plasmid pBca9525. You most likely will want to piece the part together from two pcr products using SOEing to get something like:

 EcoRI-BglII-Pcon.rbs.cI-spacer-NheI-spacer-PglpT.rbs.AmilCP!-BamHI

Note that this construct has 2 promoters and no terminator in between them. It's a little unusual design-wise, but usually works out ok. You can get the PglpT-AmilCP fragment from plasmid pBjk2741-jtk3346. The cI construct can be amplified from Media:pBca9145-jtk2768.str

In designing the junction between cI and the NheI site, you should make the spacer and frame match those of the ToxR constructs (see this illustration).

Genomic or plasmid DNA with this feature is available

Either genomic DNA or plasmid DNA is available for this sequence. Use your usual considerations of size and number of internal restriction sites to decide whether you should use that template for construction. You'll also need to think through which polymerase to use in making the construct.