Rights:
© 2015 Nature Publishing Group. This is the accepted version of the following article: Swasey, Steven M. & Leal, Leonardo Espinosa & Lopez-Acevedo, Olga & Pavlovich, James & Gwinn, Elisabeth G. 2015. Silver (I) as DNA glue: Ag+-mediated guanine pairing revealed by removing Watson-Crick constraints. Scientific Reports. Volume 5. 10163. ISSN 2045-2322 (printed). DOI: 10.1038/srep10163, which has been published in final form at http://www.nature.com/articles/srep10163.