Journal: Nucleic Acids Research
Article Title: Efficient design and assembly of custom TALEN and other TAL effector-based constructs for DNA targeting
Figure Lengend Snippet: Golden Gate assembly of custom TAL effector and TALEN constructs using module, array, last repeat and backbone plasmids. By using the type IIS restriction endonucleases BsaI and Esp3I, modules containing the desired RVDs can be released with unique cohesive ends for ordered, single-reaction assembly into array plasmids in a first step, and those arrays subsequently released and assembled in order in a second step into a backbone plasmid to create full length constructs with custom repeat arrays (see text for details). NLS, nuclear localization signal(s); AD, transcriptional activation domain; tet , tetracycline resistance; spec , spectinomycin resistance; amp , ampicillin resistance; attL1 and attL2, recombination sites for Gateway cloning; B, BamHI, and S, SphI, useful for subcloning custom repeat arrays. Unique restriction enzyme sites flanking the coding sequences, useful for subcloning the entire constructs into other vectors, are not shown but can be found in the sequence files ( Supplementary Data ).
Article Snippet: Finally, into this plasmid, the XbaI–SacI fragment of pTAL3 containing the TALEN backbone construct was introduced at the corresponding sites. pTAL1 was created by replacing the SphI fragment of tal1C in pCS691 with the corresponding SphI fragment of pTAL3, containing the lacZ gene and the Esp3I sites and flanking sequences for accepting final arrays. pCS691 is a derivative of Gateway entry vector pENTR-D (Invitrogen) containing between the attL sites, the complete tal1c gene preceded by both Kozak and Shine–Dalgarno consensus sequences for efficient translation in eukaryotic or bacterial cells, respectively.
Techniques: Construct, Plasmid Preparation, Activation Assay, Clone Assay, Subcloning, Sequencing