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. Author manuscript; available in PMC: 2011 Jul 29.
Published in final edited form as: Biochemistry. 2010 Aug 31;49(34):7351–7359. doi: 10.1021/bi100671e

Table 2.

Binding affinities for c-di-GMP riboswitch mutants mutants with disrupted tertiary contacts.

RNA Kd (nM) ΔΔGbind (kcal/mol)
Wild-type 0.011 0

C44U 1500 ± 460 7.0
C44U/G83A 190 ± 8.6 5.8
C44G 250 ± 5.2 5.9

GUAA 2.2 ± 0.77 3.1
Helical <0.5a < 2.3
UUCG 11 ± 1.8 4.1
a

This value could not be measured using equilibrium methods and an upper estimate is given.