C6：精氨酸（Arg，arginine）

称谓

精氨酸 Arg arginine

3D结构

C(C[C@@H](C(=O)O)N)CN=C(N)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]CH_2
		-[4,1]CH_2
		-[4,1]NH
		-[4,1]C
		(=[2.7,1]HN)
		(-[5.3,1]NH_2)
	)
}
\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]CH_{2}
	-[6,1]CH_{2}
	-[6,1]NH
	-[6,1]C
		(-[5]H_{2}N)
		(=[7]NH_{2}^{+})
}
\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}(-[7.9,0.35,,,,transparent]\textcolor{red}{H_{2}})
	-[6,1,,,,red]\textcolor{red}{C}(-[7.9,0.35,,,,transparent]\textcolor{red}{H_{2}})
	-[6,1,,,,red]\textcolor{red}{N}(-[7.95,0.2,,,,transparent]\textcolor{red}{H})
	-[6,1,,,,red]\textcolor{red}{C}
		(-[5,,,,,red]\textcolor{red}{N}-[4.1,0.35,,,,transparent]\textcolor{red}{H_{2}})
		(=[7,,,,,red]\textcolor{red}{N}-[7.9,0.35,,,,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]CH_2
		-[6,1]CH_2
		-[6,1]NH
		-[6,1]
		(=[5,1]HN)
		(-[7,1])NH_2
	)
}
\end{document}

^3

-

\usepackage{chemfig}
\begin{document}
\chemfig{
	(-[0.7,1]COOH)
	(<[6,0.8]NH_2)
	(-[3.3,1]
		-[4.7,1]
		-[3.3,1]
		-[4.7,1]N(-[6,0.3]H)
		-[3.3,1]
			(=[2,0.8]NH
				-[2,0.5,,,transparent] % 上边缘支撑
			)
			(-[4.7,1]H_2N)
	)
}
\end{document}

^4

-

\usepackage{chemfig}
\begin{document}
\chemfig{
C
	(-[4,0.25]H)
	(-[,0.5]NH_2)
	(-[6,0.5]COOH)
	(-[2,0.5]C
		(-[,0.3]H_2)
		(-[2,0.5]C
			(-[,0.3]H_2)
			(-[2,0.5]C
				(-[,0.3]H_2)
				(-[2,0.5]N
					(-[,0.3]H)
					(-[2,0.5]C
						(=[,0.5]NH)
						(-[2,0.5]NH_2
							-[2,0.5,,,transparent] % 上边缘支撑
						)
					)
				)
			)
		)
	)
}
\end{document}

• 形成肽链

\usepackage{chemfig}
\begin{document}

%% 精氨酸a
\definesubmol\arga{
N
	(-[::+60,0.3,,,,transparent]H)
	-[::-60]
		(<:[::-60]
			-[::60]
			-[::-60]
			-[::60]NH
			-[::-60]
				(-[::60]NH_2)
				(=[::-60]HN)
		)
	-[::60]
		(=[::60]O)
}
%% 精氨酸b
\definesubmol\argb{
N
	(-[::-60,0.3,,,transparent]H)
	-[::60]
		(<[::60]
			-[::60]
			-[::-60]
			-[::60]HN
			-[::-60,,2]
				(-[::60]H_2N)
				(=[::-60]NH
					(-[2,0.5,,,transparent]) % 上边缘支撑
				)
		)
	-[::-60]
		(=[::-60]O)
}
\chemfig{
H
	-[::+30]!\arga
	-[::-60]!\argb
	-[::+60]!\arga
	-[::-60]!\argb
	-[::+60]!OH
}
\end{document}

^5-1

• 形成肽链-带颜色

\usepackage{chemfig}
\begin{document}

%% 精氨酸a
\definesubmol\arga{
N
	(-[::+60,0.3,,,,transparent]H)
	-[::-60]
		(<:[::-60,,,,green]
			-[::60,,,,red]
			-[::-60,,,,red]
			-[::60,,,,red]\textcolor{red}{N}(-[7.95,0.2,,,transparent]\textcolor{red}{H})
			-[::-60,,,,red]
				(-[::60,,,,red]\textcolor{red}{N}(-[7.85,0.3,,,transparent]\textcolor{red}{H_{2}}))
				(=[::-60,,,,red]\textcolor{red}{N}(-[4.05,0.2,,,transparent]\textcolor{red}{H}))
		)
	-[::60]
		(=[::60]O)
}
%% 精氨酸b
\definesubmol\argb{
N
	(-[::-60,0.3,,,transparent]H)
	-[::60]
		(<[::60,,,,green]
			-[::60,,,,red]
			-[::-60,,,,red]
			-[::60,,,,red]\textcolor{red}{N}(-[4.05,0.2,,,transparent]\textcolor{red}{H})
			-[::-60,,,,red]
				(-[::60,,,,red]\textcolor{red}{N}(-[4.15,0.3,,,transparent]\textcolor{red}{H_{2}}))
				(=[::-60,,,,red]\textcolor{red}{N}(-[7.95,0.2,,,transparent]\textcolor{red}{H})
					(-[2,0.5,,,transparent]) % 上边缘支撑
				)
		)
	-[::-60]
		(=[::-60]O)
}
\chemfig{
H
	-[::+30]!\arga
	-[::-60]!\argb
	-[::+60]!\arga
	-[::-60]!\argb
	-[::+60]!OH
}
\end{document}

^5-2