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Solution structure of the DNA-binding domain of a human papillomavirus E2 protein : evidence for flexible DNA-binding regions

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Solution structure of the DNA-binding domain of a human papillomavirus E2 protein : evidence for flexible DNA-binding regions

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dc.contributor.author Liang, Heng
dc.contributor.author Petros, Andrew M.
dc.contributor.author Meadows, Robert P.
dc.contributor.author Yoon, Ho Sup
dc.contributor.author Egan, David A.
dc.contributor.author Walter, Karl
dc.contributor.author Holzman, Thomas F.
dc.contributor.author Robins, Terry
dc.contributor.author Fesik, Stephen W.
dc.date.accessioned 2012-01-26T01:49:37Z
dc.date.available 2012-01-26T01:49:37Z
dc.date.copyright 1996
dc.date.issued 2012-01-26
dc.identifier.citation Liang, H., Petros, A. M., Meadows, R. P., Yoon, H. S., Egan, D. A., Walter, K., et al. (1996). Solution Structure of the DNA-Binding Domain of a Human Papillomavirus E2 Protein:  Evidence for Flexible DNA-Binding Regions. Biochemistry, 35(7), 2095-2103.
dc.identifier.uri http://hdl.handle.net/10220/7478
dc.description.abstract The three-dimensional structure of the DNA-binding domain of the E2 protein from human papillomavirus-31 was determined by using multidimensional heteronuclear nuclear magnetic resonance (NMR) spectroscopy. A total of 1429 NMR-derived distance and dihedral angle restraints were obtained for each of the 83-residue subunits of this symmetric dimer. The average root mean square deviations of 20 structures calculated using a distance geometry-simulated annealing protocol are 0.59 and 0.90 Å for the backbone and all heavy atoms, respectively, for residues 2−83. The structure of the human virus protein free in solution consists of an eight-stranded β-barrel and two pairs of α-helices. Although the overall fold of the protein is similar to the crystal structure of the bovine papillomavirus-1 E2 protein when complexed to DNA, several small but interesting differences were observed between these two structures at the subunit interface. In addition, a β-hairpin that contacts DNA in the crystal structure of the protein−DNA complex is disordered in the NMR structures, and steady-state 1H−15N heteronuclear NOE measurements indicate that this region is highly mobile in the absence of DNA. The recognition helix also appears to be flexible, as evidenced by fast amide exchange rates. This phenomenon has also been observed for a number of other DNA-binding proteins and may constitute a common theme in protein/DNA recognition.
dc.language.iso en
dc.relation.ispartofseries Biochemistry
dc.rights © 1996 American Chemical Society.
dc.subject DRNTU::Science::Biological sciences::Microbiology::Virology.
dc.title Solution structure of the DNA-binding domain of a human papillomavirus E2 protein : evidence for flexible DNA-binding regions
dc.type Journal Article
dc.contributor.school School of Biological Sciences
dc.identifier.doi http://dx.doi.org/10.1021/bi951932w

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