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2v79

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{{STRUCTURE_2v79| PDB=2v79 | SCENE= }}
{{STRUCTURE_2v79| PDB=2v79 | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE N-TERMINAL DOMAIN OF DNAD FROM BACILLUS SUBTILIS'''
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===CRYSTAL STRUCTURE OF THE N-TERMINAL DOMAIN OF DNAD FROM BACILLUS SUBTILIS===
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==Overview==
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DnaD is a primosomal protein that remodels supercoiled plasmids. It binds to supercoiled forms and converts them to open forms without nicking. During this remodeling process, all the writhe is converted to twist and the plasmids are held around the periphery of large scaffolds made up of DnaD molecules. This DNA-remodeling function is the sum of a scaffold-forming activity on the N-terminal domain and a DNA-dependent oligomerization activity on the C-terminal domain. We have determined the crystal structure of the scaffold-forming N-terminal domain, which reveals a winged-helix architecture, with additional structural elements extending from both N- and C-termini. Four monomers form dimers that join into a tetramer. The N-terminal extension mediates dimerization and tetramerization, with extensive interactions and distinct interfaces. The wings and helices of the winged-helix domains remain exposed on the surface of the tetramer. Structure-guided mutagenesis and atomic force microscopy imaging indicate that these elements, together with the C-terminal extension, are involved in scaffold formation. Based upon our data, we propose a model for the DnaD-mediated scaffold formation.
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{{ABSTRACT_PUBMED_18206906}}
==About this Structure==
==About this Structure==
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==Reference==
==Reference==
Structure of the N-terminal oligomerization domain of DnaD reveals a unique tetramerization motif and provides insights into scaffold formation., Schneider S, Zhang W, Soultanas P, Paoli M, J Mol Biol. 2008 Mar 7;376(5):1237-50. Epub 2007 Dec 28. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/18206906 18206906]
Structure of the N-terminal oligomerization domain of DnaD reveals a unique tetramerization motif and provides insights into scaffold formation., Schneider S, Zhang W, Soultanas P, Paoli M, J Mol Biol. 2008 Mar 7;376(5):1237-50. Epub 2007 Dec 28. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/18206906 18206906]
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Crystallization and X-ray diffraction analysis of the DNA-remodelling protein DnaD from Bacillus subtilis., Schneider S, Carneiro MJ, Ioannou C, Soultanas P, Paoli M, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2007 Feb 1;63(Pt, 2):110-3. Epub 2007 Jan 17. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17277452 17277452]
[[Category: Bacillus subtilis]]
[[Category: Bacillus subtilis]]
[[Category: Single protein]]
[[Category: Single protein]]
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[[Category: Oligomerization domain]]
[[Category: Oligomerization domain]]
[[Category: Primosome]]
[[Category: Primosome]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 18:18:43 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 23:17:35 2008''

Revision as of 20:17, 28 July 2008

Image:2v79.png

Template:STRUCTURE 2v79

CRYSTAL STRUCTURE OF THE N-TERMINAL DOMAIN OF DNAD FROM BACILLUS SUBTILIS

Template:ABSTRACT PUBMED 18206906

About this Structure

2V79 is a Single protein structure of sequence from Bacillus subtilis. Full crystallographic information is available from OCA.

Reference

Structure of the N-terminal oligomerization domain of DnaD reveals a unique tetramerization motif and provides insights into scaffold formation., Schneider S, Zhang W, Soultanas P, Paoli M, J Mol Biol. 2008 Mar 7;376(5):1237-50. Epub 2007 Dec 28. PMID:18206906

Crystallization and X-ray diffraction analysis of the DNA-remodelling protein DnaD from Bacillus subtilis., Schneider S, Carneiro MJ, Ioannou C, Soultanas P, Paoli M, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2007 Feb 1;63(Pt, 2):110-3. Epub 2007 Jan 17. PMID:17277452

Page seeded by OCA on Mon Jul 28 23:17:35 2008

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