期刊
CURRENT OPINION IN MICROBIOLOGY
卷 14, 期 1, 页码 47-53出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.mib.2010.12.001
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- Deutsche Forschungsgemeinschaft [SPP 1212]
TAL (transcription activator-like) effectors constitute a novel class of DNA-binding proteins with predictable specificity. They are employed by Gram-negative plant-pathogenic bacteria of the genus Xanthomonas which translocate a cocktail of different effector proteins via a type III secretion system (T3SS) into plant cells where they serve as virulence determinants. Inside the plant cell, TALs localize to the nucleus, bind to target promoters, and induce expression of plant genes. DNA-binding specificity of TALs is determined by a central domain of tandem repeats. Each repeat confers recognition of one base pair (bp) in the DNA. Rearrangement of repeat modules allows design of proteins with desired DNA-binding specificities. Here, we summarize how TAL specificity is encoded, first structural data and first data on site-specific TAL nucleases.
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