L-丙氨酸（L-Ala，L-alanine）

称谓

L-丙氨酸 L-Ala L-α-丙氨酸 L-α-Ala L-Alanine

3D结构

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

结构

$结构式：$

-

\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_3
	)
}
\end{document}

^2

-

\usepackage{chemfig}
\begin{document}
\chemfig{
C
	(-[4,1]H_3N^{+})
	(-[2,1]COO^{-})
	(-[0,1]H)
	-[6,1]CH_{3}
}
\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_3)
}
\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])
}
\end{document}

^4

-

\usepackage{chemfig}
\begin{document}
\chemfig{
C
	(-[4,1]H_2N)
	(-[2,1]COOH)
	(-[0,1]H)
	(-[6,1]CH_3)
}
\end{document}

-

\usepackage{chemfig}
\begin{document}
\chemfig{
	(-[0.7,1]COOH
		-[2,0.5,,,transparent] % 上边缘支撑
	)
	(<:[6,0.8])
	(-[3.3,1]H_2N)
}
\end{document}

^5-1

-

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

^5-2

-

\usepackage{chemfig}
\begin{document}
\chemfig{
	H
		-[0.7]N(-[2,0.8]H)-[7.3]
			(<:[6,0.8])
		-[0.7](=[2,0.8]O
					-[2,0.5,,,transparent] % 上边缘支撑
					)
		-[7.3]OH
}
\end{document}

^5-3

• 形成肽链

\usepackage{chemfig}
\begin{document}

%% 丙氨酸a
\definesubmol\alaa{
N
	(-[::+60,0.3,,,,transparent]H)
	-[::-60]
		(<:[::-60])
	-[::60]
		(=[::60]O
			-[2,0.5,,,transparent] % 上边缘支撑
		)
}
%% 丙氨酸b
\definesubmol\alab{
N
	(-[::-60,0.3,,,transparent]H)
	-[::60]
		(<[::60])
	-[::-60]
		(=[::-60]O)
}
\chemfig{
H
	-[::+30]!\alaa
	-[::-60]!\alab
	-[::+60]!\alaa
	-[::-60]!\alab
	-[::+60]!OH
}
\end{document}

^5-1

• 形成肽链-带颜色

\usepackage{chemfig}
\begin{document}

%% 丙氨酸a
\definesubmol\alaa{
N
	(-[::+60,0.3,,,,transparent]H)
	-[::-60]
		(<:[::-60,,,,green])
	-[::60]
		(=[::60]O
			-[2,0.5,,,transparent] % 上边缘支撑
		)
}
%% 丙氨酸b
\definesubmol\alab{
N
	(-[::-60,0.3,,,transparent]H)
	-[::60]
		(<[::60,,,,green])
	-[::-60]
		(=[::-60]O)
}
\chemfig{
H
	-[::+30]!\alaa
	-[::-60]!\alab
	-[::+60]!\alaa
	-[::-60]!\alab
	-[::+60]!OH
}
\end{document}

^5-2