Journal
PROTEIN SCIENCE
Volume 19, Issue 5, Pages 1110-1116Publisher
WILEY
DOI: 10.1002/pro.367
Keywords
CTCF; chromatin; transcription; insulator
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Funding
- UCSF
- Program for Breakthrough Biomedical Research
- Sandler Foundation
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The human CCCTC-binding factor, CTCF, organizes and regulates transcription of the genome by colocalizing distant DNA elements on the same and even different chromosomes. This protein consists of 11 zinc fingers flanked by polypeptide segments of unknown structure and function. We purified recombinant terminal fragments and observed that both are extended, monomeric, and predominantly consist of unordered content. We thus speculate that the role of the terminal extensions, and perhaps all of CTCF, is to act as a scaffold for the assembly of other proteins on a specific binding site.
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