Structure of 2,4-Diaminopyrimidine-Theobromine Alternate Base Pairs

TitelStructure of 2,4-Diaminopyrimidine-Theobromine Alternate Base Pairs
Publication TypeJournal Article
Year of Publication2011
AuthorsGengeliczki Z, Callahan MP, Kabelac M, Rijs AM, de Vries MS
JournalJournal of Physical Chemistry A
Volume115
Pagination11423-11427
Date PublishedOct
Type of ArticleArticle
ISBN Number1089-5639
Accession NumberWOS:000295700600034
TrefwoordenAB-INITIO CALCULATIONS, BASIS-SET, CYTOSINE, DOUBLE-RESONANCE SPECTROSCOPY, DYNAMICS, GUANINE, MOLECULES, nucleobases, SELECTIVITY
AbstractWe report the structure of dusters of 2,4-diaminopyrimidine with 3,7-dimethylxanthine (theobromine) in the gas phase determined by IR-UV double resonance spectroscopy in both the near-IR and mid-IR regions in combination with ab initio computations. These clusters represent potential alternate nucleobase pairs, geometrically equivalent to guanine cytosine. We have found the four lowest energy structures, which include the Watson Crick base pairing motif. This Watson Crick structure has not been observed by resonant two-photon ionization (R2PI) in the gas phase for the canonical DNA base pairs.
URLhttp://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=Test&SrcApp=TestApp&DestLinkType=FullRecord&KeyUT=WOS:000295700600034&DestApp=WOS
DepartmentGUTHz
Alternate JournalJ. Phys. Chem. A