Skip to main content
. Author manuscript; available in PMC: 2013 Jul 24.
Published in final edited form as: J Am Chem Soc. 2013 Feb 25;135(9):3613–3619. doi: 10.1021/ja312314b

Figure 2.

Figure 2

Ion-pair dynamics involving Lys NH3+ and DNA phosphate group. (a) Reorientation of symmetry axis and C-N bond rotation studied by 15N relaxation for Lys side-chain NH3+ group. Determined values of the parameters describing these motions are shown in Table I. Based on the almost ideal tetrahedral geometry found for NH3+ groups,52 the order parameter for bond rotation was assumed to be 0.111.13 (b) Transitions between CIP and SIP states of intermolecular ion pairs. h3JNP coupling is present only for the CIP.