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TAL Effector DNA-Binding Principles and Specificity.

Annekatrin Richter1, Jana Streubel1, Jens Boch2

  • 1Department of Genetics, Martin Luther University Halle-Wittenberg, Weinbergweg 10, Halle (Saale), 06120, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|October 8, 2015
PubMed
Summary
This summary is machine-generated.

Transcription activator-like effectors (TALEs) are proteins with programmable DNA-binding specificity. Their unique repeat structure allows precise targeting of DNA bases for biotechnological applications.

Keywords:
CRISPRGenome editingGenome engineeringTALETALENXanthomonas

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Area of Science:

  • Molecular Biology
  • Biochemistry
  • Genetics

Background:

  • Transcription activator-like effectors (TALEs) are proteins known for their DNA-binding capabilities.
  • TALEs possess a DNA-binding domain characterized by repeating units.

Purpose of the Study:

  • To elucidate the mechanism of TALE DNA-binding specificity.
  • To highlight the potential of TALE DNA-binding modules in biotechnology.

Main Methods:

  • Analysis of the TALE DNA-binding domain structure.
  • Investigation of the interaction between TALE repeats and DNA bases.

Main Results:

  • The TALE DNA-binding domain comprises 34-amino acid repeats forming a superhelical structure.
  • Each repeat specifically recognizes a single DNA base through variable amino acids at position 13.
  • The binding is highly specific, non-overlapping, and comma-free.

Conclusions:

  • TALE specificity is encoded in a straightforward manner within the repeat units.
  • Sophisticated rules governing TALE binding can be leveraged for designing efficient DNA-binding modules for biotechnological purposes.