glutaminase
存在于肝脏中
[[C5：谷氨酰胺（Gln，glutamine）]]+$->[[0. 谷氨酸（Glu，麸氨酸，glutamate）]]+^+$
\usepackage{chemfig}
\begin{document}
\chemfig{
H_2N-[1,0.5](=[2,0.5]O)(-[7,0.5]-[1,0.5]-[7,0.5](<[6,0.8]NH_2)(-[1,0.5](=[2,0.5]O)(-[7,0.5]OH)))
}
+$
\begin{tikzpicture}
\draw [->] (0,0) to node[above] {glutaminase} (1,0);
\end{tikzpicture}
\chemfig{
HO-[1,0.5](=[2,0.5]O)(-[7,0.5]-[1,0.5]-[7,0.5](<[6,0.8]NH_2)(-[1,0.5](=[2,0.5]O)(-[7,0.5]OH)))
}
+^+$
\end{document}