C4：天冬酰胺（Asn，asparagine）

称谓

天冬酰胺 Asparagine Asn

3D结构

C([C@@H](C(=O)O)N)C(=O)N

$结构式：$ -

\usepackage{chemfig}
\begin{document}
\chemfig{
C	(-[2,1]COOH
		-[2,0.5,,,transparent] % 上边缘支撑
	)
	(<[7.3,1]NH_2)
	(<:[,1]H)
	(-[4.7,1]CH_2
		(-[4,1]H_2NOC)
	)
}
\end{document}

^2

-

\usepackage{chemfig}
\begin{document}
\chemfig{
C
	(-[4,1]H_3N^{+})
	(-[2,1]COO^{-})
	(-[0,1]H)
	-[6,1]CH_{2}
	-[6,1]C
		(=[7,]O)
		(-[5,,,2]H_{2}N)
}
\end{document}

-

\usepackage{chemfig}
\begin{document}
\chemfig{
C
	(-[4,1]H_3N^{+})
	(-[2,1]COO^{-})
	(-[0,1]H)
	-[6,1]\textcolor{red}{C}(-[7.9,0.35,,,,transparent]\textcolor{red}{H_{2}})
	-[6,1,,,red]\textcolor{red}{C}
		(=[7,,,,red]\textcolor{red}{O})
		(-[5,,,,red]\textcolor{red}{N}-[4.1,0.35,,,transparent]\textcolor{red}{H_{2}})
}
\end{document}

^1

--- -

\usepackage{chemfig}
\begin{document}
\chemfig{
C
	(<[4,1]H_2N)
	(<:[2,1]COOH
		-[2,0.5,,,transparent] % 上边缘支撑
	)
	(<[0,1]H)
	(<:[6,1]CH_2
		-[6,1]CONH_2
	)
}
\end{document}

^3

-

\usepackage{chemfig}
\begin{document}
\chemfig{
	(-[0.7,1]COOH
		-[2,0.5,,,transparent] % 上边缘支撑
	)
	(<[6,0.8]NH_2)
	(-[3.3,1]
		-[4.7,1]H_2NOC
	)
}
\end{document}

^4

-

\usepackage{chemfig}
\begin{document}
\chemfig{
C
	(<[4,1]H_2N)
	(<:[2,1]COOH
		-[2,0.5,,,transparent] % 上边缘支撑
	)
	(<[0,1]H)
	(<:[6,1]CH_2
		-[6,1]C
			(=[5,1]O)
			(-[7,1]NH_2)
	)
}
\end{document}

-

\usepackage{chemfig}
\begin{document}
\chemfig{
	(-[0.7,1]COOH
		-[2,0.5,,,transparent] % 上边缘支撑
	)
	(<[6,0.8]NH_2)
	(-[3.3,1]
		-[4.7,1]C
			(=[3.3,0.8]O)
			(-[6,0.8]NH_2)
	)
}
\end{document}

• 形成肽链

\usepackage{chemfig}
\begin{document}

%% 天冬酰胺a
\definesubmol\asna{
N
	(-[::+60,0.3,,,,transparent]H)
	-[::-60]
		(<:[::-60]-[::30]
			(-[::60]NH_{2})
			(=[::-60]O)
		)
	-[::60]
		(=[::60]O)
}
%% 天冬酰胺b
\definesubmol\asnb{
N
	(-[::-60,0.3,,,transparent]H)
	-[::60]
		(<[::60]-[::30]
			(-[::60]H_{2}N)
			(=[::-60]O
				(-[2,0.5,,,transparent]) % 上边缘支撑
			)
		)
	-[::-60]
		(=[::-60]O)
}
\chemfig{
H
	-[::+30]!\asna
	-[::-60]!\asnb
	-[::+60]!\asna
	-[::-60]!\asnb
	-[::+60]!OH
}
\end{document}

^5-1

• 形成肽链-带颜色

\usepackage{chemfig}
\begin{document}

%% 天冬酰胺a
\definesubmol\asna{
N
	(-[::+60,0.3,,,,transparent]H)
	-[::-60]
		(<:[::-60,,,,green]-[::30,,,,red]
			(-[::60,,,,red]\textcolor{red}{N}-[7.9,0.3,,,,transparent]\textcolor{red}{H_{2}})
			(=[::-60,,,,red]\textcolor{red}{O})
		)
	-[::60]
		(=[::60]O)
}
%% 天冬酰胺b
\definesubmol\asnb{
N
	(-[::-60,0.3,,,transparent]H)
	-[::60]
		(<[::60,,,,green]-[::30,,,,red]
			(-[::60,,,,red]\textcolor{red}{N}-[4.1,0.3,,,,transparent]\textcolor{red}{H_{2}})
			(=[::-60,,,,red]\textcolor{red}{O}
				(-[2,0.5,,,transparent]) % 上边缘支撑
			)
		)
	-[::-60]
		(=[::-60]O)
}
\chemfig{
H
	-[::+30]!\asna
	-[::-60]!\asnb
	-[::+60]!\asna
	-[::-60]!\asnb
	-[::+60]!OH
}
\end{document}

^5-2