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G：鸟嘌呤（guanine）

鸟嘌呤 guanine G smiles C1=NC2=C N1 C =O NC =N2 N $结构式：$ - tikz \usepackage chemfig \begin document \chemfig atom sep=2em,cram width=2pt H- 2,0.4,,,,transparent N 5 - 6 -N=

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称谓

鸟嘌呤 guanine G

3D结构

C1=NC2=C(N1)C(=O)NC(=N2)N

描述

$结构式：$

-

\usepackage{chemfig}
\begin{document}
\chemfig[atom sep=2em,cram width=2pt]{
	(H-[2,0.4,,,,transparent]N
		*5(-(
			*6(-N=(-[7.6,]NH_2)-[,,,1]NH-(=[2.4,,,1]O)-=)
		)--N=-)
	)
}
\end{document}

^1

• IUPAC

\usepackage{chemfig}
\begin{document}
\chemfig{
(-[4,,,,transparent])**6(
		-N(-[,0.3,,,transparent]3)
		-(-[0,0.3,,,transparent]2)(-NH_2)
		-N(-[,0.3,,,transparent]1)
		-(-[2.5,0.3,,,transparent]6)(=O)
		-(-[1.5,0.3,,,transparent]5)**5(
			-N(-[,0.3,,,transparent]7)
			-(-[,0.3,,,transparent]8)
			-N(-[,0.3,,,transparent]9)
			-(-[5,0.3,,,transparent]4)
			-
		)
		-
	)
} 
\end{document}

• tikz文档

\usepackage{chemfig}
\begin{document}
\chemfig{*6((-H_2N)=N-*6(-\chembelow{N}{H}-=N?)=?-(=O)-HN-[,,2])}
\end{document}

• tikz文档

\usepackage{chemfig}
\begin{document}
\chemfig{*6((-H_2N)=N-*5(-\chembelow{N}{H}-=N-)=-(=O)-HN-[,,2])}
\end{document}

-

\usepackage{chemfig}
\begin{document}
\chemfig{[:30]N*6(=(-N(-[5]H)-[0]H)-N(-H)=(=O)-*5(-N=-N-)=-)}
\end{document}

^2 -

\usepackage{chemfig}
\begin{document}
\chemfig{
N(-[4,0.3]H)
-[6,0.5](-[4,0.5]H_2N)
=[7.3,0.5]N
-[0.8,0.5]
=[2,0.5]
	(
		-[0.5,0.5]N
		=[6.55,0.5]
		-[5.25,0.5]N(-[6,0.3]H)
		-[3.5,0.4]
	)
-[3.3,0.5](=[2,0.5]O)
-[4.8,0.3]
}
\end{document}

形成的核苷酸

-

\usepackage{chemfig}
\begin{document}
\chemfig{
(-[4,,,,transparent])**6(
		-N(-[,0.3,,,transparent]3)
		-(-[0,0.3,,,transparent]2)(-NH_2)
		-N(-[,0.3,,,transparent]1)
		-(-[2.5,0.3,,,transparent]6)(=O)
		-(-[1.5,0.3,,,transparent]5)**5(
			-N(-[,0.3,,,transparent]7)
			-(-[,0.3,,,transparent]8)
			-N(-[3.5,0.3,,,transparent]9)(-sugar)
			-(-[5,0.3,,,transparent]4)
			-
		)
		-
	)
} 
\end{document}

-

\usepackage{chemfig}
\begin{document}
\chemfig{
(-[4,,,,transparent])*6(
		-N(-[,0.3,,,transparent]3)
		=(-[0,0.3,,,transparent]2)(-N(-[0]H)(-[5.3]H))
		-N(-[1,0.3,,,transparent]1)(-H)
		-(-[2.5,0.3,,,transparent]6)(=O)
		-(-[1.5,0.3,,,transparent]5)*5(
			-N(-[,0.3,,,transparent]7)
			=(-[,0.3,,,transparent]8)
			-N(-[3.5,0.3,,,transparent]9)(-sugar)
			-(-[5,0.3,,,transparent]4)
			-
		)
		=
	)
} 
\end{document}