\begin{Verbatim}[commandchars=\\\{\}]
2Fe\PYGZhy{}2S.
Protein which contains at least one 2Fe\PYGZhy{}2S iron\PYGZhy{}sulfur cluster: 2 iron atoms
complexed to 2 inorganic sulfides and 4 sulfur atoms of cysteines from the
protein.
...
\end{Verbatim}
