Journal: G3: Genes|Genomes|Genetics
Article Title: The I-TevI Nuclease and Linker Domains Contribute to the Specificity of Monomeric TALENs
Figure Lengend Snippet: Tev-mTALEN activity in HEK293T cells on an episomal target. (A) Schematic of the vectors used for co-transfection experiments. For the expression vector, the Tev-mTALEN gene is separated from the mCherry translation reporter by a T2A peptide. (B) Example of Tev-mTALEN expression vector transfection efficiency and expression in HEK293T cells, with bright field image on the left and the epifluorescent image (1-sec exposure) of the same field of view on the right. (C) Schematic of the TP15 target, with a Dde I restriction site and sizes of Dde I digestion products indicated. (D) Agarose gel of a representative assay in which the target region was amplified by PCR from total DNA isolated 48 hr after transfection, and products were digested with Dde I (+) or incubated in buffer without Dde I (−); product resistant to cleavage by Dde I, which would result from mutagenic repair after cleavage by the mTALEN, is labeled with an asterisk (*). (E) Examples of mutations in the target resulting from co-transfection with N169-T120 or D184-V152 Tev-mTALENs. The Dde I-resistant product from (C) was cloned and several clones were sequenced. Dashes indicate the length of deletions observed in individual clones relative to the wild-type sequence.
Article Snippet: After gel purification, 250 ng of each PCR product was incubated with 2 U of Dde I (N.E.B.) in 1× NEBuffer 2 for 1 hr at 37°.
Techniques: Activity Assay, Cotransfection, Expressing, Plasmid Preparation, Transfection, Size-exclusion Chromatography, Agarose Gel Electrophoresis, Amplification, Polymerase Chain Reaction, Isolation, Incubation, Labeling, Clone Assay, Sequencing