\end{center}
\end{figure}
%
-\nomenclature{DTT}{Dithiothreitol
+\nomenclature[text ]{DTT}{Dithiothreitol
(C\textsubscript{4}H\textsubscript{10}O\textsubscript{2}S\textsubscript{2}),
also known as Cleland's reagent\citep{cleland64}. It can be used to
reduce disulfide bonding in proteins.}