Title:
Interaction of B-DNA and Monovalent Cations: Theory and Practice in X-Ray Crystallography

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dc.contributor.advisor Williams, Loren D.
dc.contributor.author Moulaei, Tinoush en_US
dc.contributor.committeeMember Doyle, Donald
dc.contributor.committeeMember Hud, Nicholas
dc.contributor.committeeMember Wartell, Roger
dc.contributor.committeeMember Wilkinson, Angus
dc.contributor.department Chemistry and Biochemistry en_US
dc.date.accessioned 2005-03-01T19:44:51Z
dc.date.available 2005-03-01T19:44:51Z
dc.date.issued 2004-12-03 en_US
dc.description.abstract In this thesis, fundamental questions about the nature of the solvent/counter-ion region of x-ray crystal structures are raised. The ambiguity in the identity and occupancy of the molecular and atomic species in this region is explored experimentally. Anomalous scattering is proposed as a possible method for resolving this ambiguity. To this effect, the properties of rubidium I and thallium I are compared and contrasted to each other and to other group I metals. Finally, the structures of two modified B-DNA dodecamers are determined to explore the effect of monovalent cations on B-DNA structure. The modifications in these structures harbor tethered cations that are covalently linked to the DNA in the major groove. In one structure, the tethered cation causes axial bending of the DNA molecule, while in the second structure the molecule remains linear. We posit that the discrepancy between the two structures is due to lattice packing forces. In addition, we show evidence for the displacement of thallium I cations from the major groove of the bent structure. en_US
dc.description.degree Ph.D. en_US
dc.format.extent 5897342 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/4927
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Anomalous scattering en_US
dc.subject Nucleic acids
dc.subject DNA
dc.subject Rubidium
dc.subject Thallium
dc.subject.lcsh X-ray crystallography en_US
dc.subject.lcsh Thallium en_US
dc.subject.lcsh Rubidium en_US
dc.subject.lcsh Monovalent cations en_US
dc.subject.lcsh DNA en_US
dc.title Interaction of B-DNA and Monovalent Cations: Theory and Practice in X-Ray Crystallography en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Williams, Loren D.
local.contributor.corporatename School of Chemistry and Biochemistry
local.contributor.corporatename College of Sciences
relation.isAdvisorOfPublication 2886d5c2-dc71-4ca2-a4bf-efd1856ef0aa
relation.isOrgUnitOfPublication f1725b93-3ab8-4c47-a4c3-3596c03d6f1e
relation.isOrgUnitOfPublication 85042be6-2d68-4e07-b384-e1f908fae48a
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