Insights into DNA Platination within Unusual Structural Settings
Joint Authors
Wilson, Owen
Parkinson, John A.
Harvie, Stephanie
Source
International Journal of Inorganic Chemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-18
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
2D [H1,N15] HSQC NMR spectroscopy has been used to monitor reaction and product formation between [Pt(N15H3)2I2] and nucleic acids possessing irregular topologies and containing site-specific phosphorothioate substitution in the phosphodiester backbone.
Comparison of the reaction profiles of dimer nucleic acids with and without phosphorothioate substitution is made with their short nucleic acid counterparts containing the key dimer components.
Whereas d(GpA) is relatively unreactive towards [Pt(N15H3)2I2], NMR evidence suggests that the tandem sheared mismatch duplex d(GCG3pAGC)2 reacts to form the head-to-tail interstrand G3-N7-Pt-G3-N7 cross-link.
The equivalent phosphorothioate R,S-d(GsA) reacts to form a monoiodo, monosulphur adduct, whereas the tandem sheared mismatch phosphorothioate duplex d(GCGsAG5C)2 (VIs) reacts to form the unusual intrastrand macrochelate [Pt(N15H3)2{d(VIs-G5-N7)},S]2+, in which platinum is attached at both sulphur and G5-N7.
Experimental evidence supports the formation of a stabilized mismatch duplex in which platinum is attached to two nitrogen centres in the sequence d(CGCGpTGCG) in contrast to R,S-d(CGCGsT5GCG) for which NMR evidence supports macrochelate-stabilized hairpin loop formation cross-linked at both phosphorothioate sulphur and T5-N3.
American Psychological Association (APA)
Harvie, Stephanie& Wilson, Owen& Parkinson, John A.. 2012. Insights into DNA Platination within Unusual Structural Settings. International Journal of Inorganic Chemistry،Vol. 2011, no. 2011, pp.1-17.
https://search.emarefa.net/detail/BIM-463217
Modern Language Association (MLA)
Harvie, Stephanie…[et al.]. Insights into DNA Platination within Unusual Structural Settings. International Journal of Inorganic Chemistry No. 2011 (2011), pp.1-17.
https://search.emarefa.net/detail/BIM-463217
American Medical Association (AMA)
Harvie, Stephanie& Wilson, Owen& Parkinson, John A.. Insights into DNA Platination within Unusual Structural Settings. International Journal of Inorganic Chemistry. 2012. Vol. 2011, no. 2011, pp.1-17.
https://search.emarefa.net/detail/BIM-463217
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-463217