Difference between revisions of "Part:BBa K1875013"

Revision as of 00:15, 19 October 2016

This operator, when paired with a guide RNA, expresses GFP

Single Operator

The 2016 BostonU iGEM team designed a set of mutually orthogonal guide RNA (gRNA) expression vectors and gRNA operator reporters that could activate the expression of a gene of interest. This part contains the gRNA operator target sequence for gRNA 1 from BostonU’s Gemini Library (5’-TCTGCCCGAAGTTTCGACGG-3’) (Part BBa_K1875005). The introduction of the gRNA leads to a significant fold increase in expression of the gene of interest in comparison to the basal level tested without the gRNA (figure 2). Figure 3 illustrates the results from a mutual orthogonality screen showing on target and off target expression levels among the guide expression vectors and the gRNA operator reporters in the Gemini Library. These results show that there is no significant expression among off target gRNA and operator pairs, demonstrating that there is no cross talk in Gemini.

Figure 1: gRNA operator reporter plasmid map

Figure 2: Screen of GFP expression in gRNA operator reporters with and without gRNA expression vectors

Figure 3: Mutual Orthogonality among gRNA expression vectors and gRNA operator reporters in Gemini. The green diagonal down the matrix indicates that there is no significant off target gene expression. Measured in arbitrary median fluorescence intensity.

Sequence and Features