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1d65

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{{STRUCTURE_1d65| PDB=1d65 | SCENE= }}
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'''MOLECULAR STRUCTURE OF THE B-DNA DODECAMER D(CGCAAATTTGCG)2; AN EXAMINATION OF PROPELLER TWIST AND MINOR-GROOVE WATER STRUCTURE AT 2.2 ANGSTROMS RESOLUTION'''
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===MOLECULAR STRUCTURE OF THE B-DNA DODECAMER D(CGCAAATTTGCG)2; AN EXAMINATION OF PROPELLER TWIST AND MINOR-GROOVE WATER STRUCTURE AT 2.2 ANGSTROMS RESOLUTION===
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==Overview==
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The crystal structure of the dodecanucleotide duplex d(CGCAAATTTGCG)2 has been solved to 2.2 A resolution and refined to an R-factor of 18.1% with the inclusion of 71 water molecules. The structure shows propeller twists of up to -20 degrees for the A.T base-pairs, although there is probably only one (weak) three-centre hydrogen bond in the six base-pair AT narrow minor-groove region. An extensive ribbon of hydration has been located in this groove that has features distinctive from the classic "spine of hydration". Solvation around phosphate groups is described, with several instances of water molecules bridging between phosphates.
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(as it appears on PubMed at http://www.pubmed.gov), where 1518049 is the PubMed ID number.
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{{ABSTRACT_PUBMED_1518049}}
==About this Structure==
==About this Structure==
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[[Category: B-dna]]
[[Category: B-dna]]
[[Category: Double helix]]
[[Category: Double helix]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 13:29:37 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 22:31:11 2008''

Revision as of 19:31, 30 June 2008

Image:1d65.png

Template:STRUCTURE 1d65

MOLECULAR STRUCTURE OF THE B-DNA DODECAMER D(CGCAAATTTGCG)2; AN EXAMINATION OF PROPELLER TWIST AND MINOR-GROOVE WATER STRUCTURE AT 2.2 ANGSTROMS RESOLUTION

Template:ABSTRACT PUBMED 1518049

About this Structure

Full crystallographic information is available from OCA.

Reference

Molecular structure of the B-DNA dodecamer d(CGCAAATTTGCG)2. An examination of propeller twist and minor-groove water structure at 2.2 A resolution., Edwards KJ, Brown DG, Spink N, Skelly JV, Neidle S, J Mol Biol. 1992 Aug 20;226(4):1161-73. PMID:1518049

Page seeded by OCA on Mon Jun 30 22:31:11 2008

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