conformation. However, \citet{li00} showed that while the unfolding
properties of I27 are not effected by I28 flankers, I28 \emph{is}
stabilized by neighboring I27. The unforced Bell model unfolding rate
-for I28 in (I28)\textsubscript{8} was $2.8\E{-5}\U{s$^-1$}$, while in
-(I27-I28)\textsubscript{4} it dropped to
-$2.5\E{-6}\U{s$^-1$}$\citep{li00}.
+for I28 in (I28)\textsubscript{8} was $2.8\E{-5}\U{s$^{-1}$}$, while
+in (I27-I28)\textsubscript{4} it dropped to
+$2.5\E{-6}\U{s$^{-1}$}$\citep{li00}.
\subsection{Choosing the simulation time steps}
\label{sec:sawsim:timesteps}