Structural basis for altering the stability of homologous RNAs from a mesophilic and a thermophilic bacterium

TABLE 1.

Folding parameters for the I-to-N transition obtained by CD

S-domain No. of nt changes KMg (mM) n m (kcal mol−1 m−1)
20 mM TrisHCl (pH 8.1), 37°C.
E. coli 0 0.15 ± 0.01 3.9 ± 0.5 1.5 ± 0.1
T. thermophilus 39 0.08 ± 0.01 6.2 ± 0.6 2.4 ± 0.2
Mutants
P12 2 0.17 ± 0.01 3.0 ± 0.6
P9 + P11 4 0.07 ± 0.02 3.8 ± 1.7
J11/12 + P14 6 0.09 ± 0.01 2.9 ± 0.7
All 12 12 0.09 ± 0.01 6.4 ± 1.6

This Article

  1. RNA 12: 598-606