On the Geometry and Electronic Structure of the As-DNA Backbone

Published: JOURNAL OF PHYSICAL CHEMISTRY LETTERS 2, 389-392 Authors: Mladek, A., Sponer, J., Sumpter, BG., Fuentes-Cabrera, M., Sponer, JE. Year: 2011


High-level quantum chemical calculations have been applied to investigate the geometry and electronic properties of the arsenate analogue of the DNA backbone. The optimized geometries as well as hyperconjugation effects along the C3'-O3'-X-O5'-C5', linkage (X = R,As) exhibit a remarkable similarity for both arsenates and phosphates. This suggests that arsenates, if present, might serve as a potential substitute for phosphates in the DNA backbone.