1kft
From Proteopedia
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| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1kft FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kft OCA], [http://www.ebi.ac.uk/pdbsum/1kft PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1kft RCSB]</span> | ||
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[[Category: hhh domain]] | [[Category: hhh domain]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:48:01 2008'' |
Revision as of 18:48, 30 March 2008
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Solution Structure of the C-Terminal domain of UvrC from E-coli
Overview
The C-terminal domain of the UvrC protein (UvrC CTD) is essential for 5' incision in the prokaryotic nucleotide excision repair process. We have determined the three-dimensional structure of the UvrC CTD using heteronuclear NMR techniques. The structure shows two helix-hairpin-helix (HhH) motifs connected by a small connector helix. The UvrC CTD is shown to mediate structure-specific DNA binding. The domain binds to a single-stranded-double-stranded junction DNA, with a strong specificity towards looped duplex DNA that contains at least six unpaired bases per loop ("bubble DNA"). Using chemical shift perturbation experiments, the DNA-binding surface is mapped to the first hairpin region encompassing the conserved glycine-valine-glycine residues followed by lysine-arginine-arginine, a positively charged surface patch and the second hairpin region consisting of glycine-isoleucine-serine. A model for the protein-DNA complex is proposed that accounts for this specificity.
About this Structure
1KFT is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Solution structure and DNA-binding properties of the C-terminal domain of UvrC from E.coli., Singh S, Folkers GE, Bonvin AM, Boelens R, Wechselberger R, Niztayev A, Kaptein R, EMBO J. 2002 Nov 15;21(22):6257-66. PMID:12426397
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