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Direct Protein Delivery to Mammalian Cells Using Cell-permeable Cys2-His2 Zinc-finger Domains
Published on: March 25, 2015
An improved strategy for constructing "designer" Cys2His2 zinc finger proteins
Stacey A Thibodeau1, J Keith Joung
1Molecular Pathology Unit, Division of Molecular Pathology and Research, Department of Pathology, Massachusetts General Hospital, 149 13th Street, Charlestown, MA 02129, USA.
Discovery Medicine
|August 14, 2010
Summary
Customizing Cys2His2 zinc finger proteins allows for precise DNA binding. This technology advances biological research, molecular medicine, and gene therapy applications.
Area of Science:
- Molecular Biology
- Protein Engineering
- Genetics
Background:
- Cys2His2 zinc finger domains serve as versatile scaffolds for engineering custom DNA-binding proteins.
- These engineered proteins have significant potential in biological research, molecular medicine, and gene therapy.
Purpose of the Study:
- To explore methods for altering DNA-binding specificities of single zinc fingers.
- To investigate strategies for creating synthetic multi-finger proteins for targeted DNA binding.
Main Methods:
- Utilized targeted randomization and selection methodologies, such as phage display.
- Randomized potential DNA-binding residues within the zinc finger's recognition helix.
- Linked pre-selected or pre-characterized zinc finger domains to create multi-finger proteins.
Main Results:
- Successfully altered DNA-binding specificities of individual zinc fingers.
- Developed methods to generate libraries of zinc finger variants.
- Demonstrated the modular assembly of multi-finger proteins for recognizing specific DNA sequences.
Conclusions:
- Cys2His2 zinc finger technology enables the creation of customized DNA-binding proteins.
- The modular nature of zinc fingers facilitates the rapid assembly of proteins for diverse DNA targets.
- This approach holds promise for advancing gene therapy and molecular medicine.
