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[[Image:chemistry_example3.png]]
An example of an amino acid: Histidine (Ace-His-Nme).
The rest of the amino acids are shown in [http://tt4sci.wordpress.com/2009/08/05/drawing-organic-molecules-in-latex-ii-amino-acids/ TT4Sci]
<texcode>
\usepackage{color}
\usepackage{m-pictex,m-ch-en}
\definechemical[radical]
{\chemical[SAVE,ONE,SB768,Z068][C,H,H]
\chemical[MOV7,ONE,Z0][C]
\chemical[MOV7,FIVE,ROT4,SB12345,EB42,Z1235,SR125,RZ125,RESTORE][N,C,N,C,H,H,H]}
\startchemical
[scale=big,size=big,left=2600,right=4200,bottom=2800,top=4500]
\bottext{Histidine}
\chemical[SIX,SB23]
\chemical[PB:Z1,SAVE,radical,RESTORE,PE]
\chemical[PB:Z2,ONE,SB37,Z03,PE][\SL{C^{\alpha}},H^{\alpha 1}]
\chemical[PB:Z3,SIX,Z5,SB4,Z4,PE][N,H]
{\color{blue}
\chemical[PB:Z4,SIX,Z2,SB2,DB1,Z31,PE][C{\text{\tiny{-1}}},\SR{H_3C},O{\text{\tiny{-1}}}]}
\chemical[SIX,MOV1,SB23]
\chemical[PB:Z3,SIX,Z5,DB4,Z4,PE][C,O]
{\color{red}
\chemical[PB:Z2,SIX,Z4,SB34,Z53,PE][N{\text{\tiny{+1}}},H{\text{\tiny{+1}}},\SL{CH_3}]}
</texcode>
[[Image:histidine.png]]
[[Category:Graphics]]
[[Category:Chemistry]]
