称谓
次甲基四氢叶酸环水解酶 亚甲基四氢叶酸环化水解酶 Methenyltetrahydrofolate cyclohydrolase FchA
催化反应
[[N10-甲酰四氢叶酸（10-formyl-THF）]]+^+$<->[[N5,N10-次甲基四氢叶酸（5,10-methenyl-THF）]]+$
\usepackage{chemfig}
\begin{document}
\chemfig{
N(-[4,0.3]H)-[7,0.8](-[6,0.6]NH_2)=[,0.8]N-[1,0.8](=[,0.6]O)-[3,0.8]
(-[1,0.8]N(-[,0.3]H)(-[4,0.3]5)-[3,0.8]
(-[2,0.6]CH_2-[2,0.6]
N(-[,0.6]CHO)(-[4,0.3]10)-[2,0.6]**6(
-
-
-(-[,0.6]C
(=[4,0.7]O)
(-[2,0.7]
NH-[2,0.6]CH
(-[4,0.6]HOOC)
(-[2,0.6]CH_2
(-[2,0.6]CH_2
(-[2,0.6]COOH)
)
)
)
)
-
-
-
)
)
-[4,0.8]-[5,0.8]N(-[4,0.3]H)-[7,0.8])
=[4,0.8]-[5,0.6]
}
+^+$
\begin{tikzpicture}
\draw [<->] (0,0) to node[above] {FchA} (1,0);
\end{tikzpicture}
\chemfig{
N(-[4,0.3]H)-[7,0.8](-[6,0.6]NH_2)=[,0.8]N-[1,0.8](=[,0.6]O)-[3,0.8]
(-[1,0.8]N(=[1.4,1])(-[4,0.3]5)-[3,0.8]
(-[2,0.6]CH_2-[2,0.6]
N(-[4,0.3]10)(-[7.3,1.3]CH)(-[4,0.3]10)-[2,0.6]**6(
-
-
-(-[,0.6]C
(=[4,0.7]O)
(-[2,0.7]
NH-[2,0.6]CH
(-[4,0.6]HOOC)
(-[2,0.6]CH_2
(-[2,0.6]CH_2
(-[2,0.6]COOH)
)
)
)
)
-
-
-
)
)
-[4,0.8]-[5,0.8]N(-[4,0.3]H)-[7,0.8])
=[4,0.8]-[5,0.6]
}
+$
\end{document}