称谓
Orotidine 5'-phosphate decarboxylase OMP decarboxylase orotidylate decarboxylase OMPDC
[[乳清苷酸（OMP）]]->[[UMP：尿苷酸，尿嘧啶核糖核苷酸，单磷酸尿苷]]+$
\usepackage{chemfig}
\begin{document}
\chemfig{
(-[3.3,0.4])
(-[2,0.5]
N
(
-[0.7,0.5]
(-[7.3,0.5]
(=[6,0.5]O)
(-[0.7,0.5]OH)
)
(=[2,0.5]-[3.3,0.5]
(=[2,0.5]O)
(-[4.7,0.5]
N
(-[4,0.2]H)
(-[6,0.5]
(=[4.7,0.5]O)
(-[7.3,0.4])
)
)
)
)
)
<[5.3,0.5]
(-[7,0.7]OH)
-[4,0.5,,, line width=2pt]
(-[5,0.7]HO)
>[2.7,0.5]
(-[0.7,0.6]O)
(-[3.5,0.6]-[4.5,0.8]\fbox{P})
}
\begin{tikzpicture}
\draw [->] (0,0) to node[above] {OMPDC} (1,0);
\end{tikzpicture}
\chemfig{
\fbox{P}-[7,0.8]-[6,0.4]
(-[0.5,0.65]O-[7.5,0.65])
<[7,0.5](-[5.5,0.5]O-[4,0.3]H)
-[,0.5,,, line width=2pt]
(-[6.5,0.5]OH)>[1,0.5]
-[2,0.5]N-[0.7,0.5](=[7.3,0.5]O)
-[2,0.5]N(-[,0.3]H)
-[3.3,0.5](=[2,0.5]O)
-[4.7,0.5]
=[6,0.5]
-[7.3,0.4]
}
+
$
\end{document}