Document Type
Article
Journal/Book Title
Journal of Physical Chemistry B
Publication Date
8-11-2016
Publisher
ACS Publications
Volume
120
Issue
35
First Page
9347
Last Page
9361
Abstract
Temozolomide (TMZ) was paired with each of the five nucleic acid bases, and the potential energy surface searched for all minima, in the context of dispersion-corrected density functional theory and MP2 methods. Three types of arrangements were observed, with competitive stabilities. Coplanar H-bonding structures, reminiscent of Watson–Crick base pairs were typically the lowest in energy, albeit by a small amount. Also very stable were perpendicular arrangements that included one or more H-bonds. The two monomers were stacked approximately parallel to one another in the third category, some of which contained weak and distorted H-bonds. Dispersion was found to be a dominating attractive force, largest for the stacked structures, and smallest for the coplanar dimers.
Recommended Citation
Kasende, Okuma Emile and Scheiner, Steve, "Interactions of Nucleic Acid Bases with Temozolomide. Stacked, Perpendicular, and Coplanar Heterodimers" (2016). Chemistry and Biochemistry Faculty Publications. Paper 684.
https://digitalcommons.usu.edu/chem_facpub/684
