Abstract:
:Transcription activator-like effector (TALE) proteins have gained broad appeal as a platform for targeted DNA recognition, largely owing to their simple rules for design. These rules relate the base specified by a single TALE repeat to the identity of two key residues (the repeat variable diresidue, or RVD) and enable design for new sequence targets via modular shuffling of these units. A key limitation of these rules is that their simplicity precludes options for improving designs that are insufficiently active or specific. Here we address this limitation by developing an expanded set of RVDs and applying them to improve the performance of previously described TALEs. As an extreme example, total conversion of a TALE nuclease to new RVDs substantially reduced off-target cleavage in cellular studies. By providing new RVDs and design strategies, these studies establish options for developing improved TALEs for broader application across medicine and biotechnology.
journal_name
Nat Methodsjournal_title
Nature methodsauthors
Miller JC,Zhang L,Xia DF,Campo JJ,Ankoudinova IV,Guschin DY,Babiarz JE,Meng X,Hinkley SJ,Lam SC,Paschon DE,Vincent AI,Dulay GP,Barlow KA,Shivak DA,Leung E,Kim JD,Amora R,Urnov FD,Gregory PD,Rebar EJdoi
10.1038/nmeth.3330subject
Has Abstractpub_date
2015-05-01 00:00:00pages
465-71issue
5eissn
1548-7091issn
1548-7105pii
nmeth.3330journal_volume
12pub_type
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