Previous Article Next Article Table of Contents Journal of the American Chemical Society, Vol.120, No.25, 6403-6404, 1998 DOI10.1021/ja9811039 Export Citation Ammonium ion as an NMR probe for monovalent cation coordination sites of DNA quadruplexes Hud NV, Schultze P, Feigon J Please enable JavaScript to view the comments powered by Disqus.