1f2i
COCRYSTAL STRUCTURE OF SELECTED ZINC FINGER DIMER BOUND TO DNACOCRYSTAL STRUCTURE OF SELECTED ZINC FINGER DIMER BOUND TO DNA
Structural highlights
Function[EGR1_MOUSE] Transcriptional regulator. Recognizes and binds to the DNA sequence 5'-CGCCCCCGC-3'(EGR-site). Activates the transcription of target genes whose products are required for mitogenesis and differentiation. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedProtein-protein interactions often play a crucial role in stabilizing protein-DNA complexes and thus facilitate site-specific DNA recognition. We have worked to incorporate such protein-protein contacts into our design and selection strategies for short peptide extensions that promote cooperative binding of zinc finger proteins to DNA. We have determined the crystal structure of one of these fusion protein-DNA complexes. The selected peptide extension was found to mediate dimerization by reaching across the dyad axis and contacting a hydrophobic patch on the surface of the zinc finger bound to the adjacent DNA site. The peptide-zinc finger protein interactions observed in this structure are similar to those of some homeodomain heterodimers. We also find that the region of the zinc finger surface contacted by the selected peptide extension corresponds to surfaces that also make key interactions in the zinc finger proteins GLI and SWI5. Selected peptide extension contacts hydrophobic patch on neighboring zinc finger and mediates dimerization on DNA.,Wang BS, Grant RA, Pabo CO Nat Struct Biol. 2001 Jul;8(7):589-93. PMID:11427887[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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