Graphics, Figures & Tables ⇒ Phospholipids representation - how can i do it?

[elmariachi]

Hello latex friends.
First of all, english isn't my native language so I'm not sure as to what these are called --- please let me know if you do

chemschemes.png (383.63 KiB) Viewed 2559 times

Is it possible to replicate this sort of diagram using latex? TikZ maybe? I never anything graphic-related in latex, just text and tables.

Thank you all!


Edit by localghost: No external links! Attachments go onto the forum server (see Board Rules).

[localghost]

[…] Is it possible to replicate this sort of diagram using latex? TikZ maybe? […]

A little bit late comes this solution. To me it seemed to be possible only now with reasonable effort. And the back-end is indeed pgf/tikZ. The quite new and excellent chemfig package is based on that and is used for the chemical structures.

Code: Select all

\documentclass{minimal}
\usepackage{tikz}
\usetikzlibrary{backgrounds,calc,positioning}
\usepackage{chemfig}
\usepackage[version=3]{mhchem}

\setatomsep{2em}

\begin{document}
  \begin{tikzpicture}[>=stealth]
    \node (pea) {%
      \chemname{%
        \chemfig{%
          {Alkyl}--[6](-[4]{Acyl})-[6]-
          O-P(=[2]O)(-[4]O)(-[6]O^{-})-O-[:-30]-[:30]-[:-30]{\ce{NH2}}
        }
      }{\hspace{-2em} Phosphatidylethanolamine}
    };
    \node (nape) [node distance=4em and -9em,below right=of pea.south west] {%
      \chemname{%
        \chemfig{%
          {Alkyl}--[6](-[4]{Acyl})-[6]-
          O-P(=[2]O)(-[4]O)(-[6]O^{-})-O-[:-30]-[:30]-[:-30]{\chembelow{N}{H}}-[:30]
          (=[2]O)-[:-30]-[:30]-[:-30]-[:30]=-[:-30]-[:30]=-[:-60]-[:-120]=[4]-[:150]
          -[:210]=[4]-[:150]-[:210]-[:150]-[:210]-[6]
        }
      }{$N$-arachidonoyl-PE}
    };
    \node (aa) [anchor=north east,node distance=4em and 0em,below left=of nape.south east] {%
      \chemname{%
        \chemfig{%
          HO-[:-30]-[:30]-[:-30]{\chembelow{N}{H}}-[:30]
          (=[2]O)-[:-30]-[:30]-[:-30]-[:30]=-[:-30]-[:30]=-[:-60]-[:-120]
         =[4]-[:150]-[:210]=[4]-[:150]-[:210]-[:150]-[:210]-[6]
        }
      }{\hspace{-8em} Anandamide}
    };
    \begin{scope}[on background layer]
      \fill[cyan!10] ($(pea.south west)+(-90pt,-5pt)$) rectangle ($(pea.north east)+(72pt,5pt)$);
      \fill[gray!10] ($(nape.south west)+(0,-5pt)$) rectangle ($(nape.north east)+(0,5pt)$);
      \fill[magenta!10] ($(aa.south west)+(-80pt,-5pt)$) rectangle ($(aa.north east)+(0,5pt)$);
    \end{scope}
    \path[->,ultra thick] ($(pea.south)+(-9.15pt,0)$) edge node[right,midway] {$N$-acyltransferase} (nape.north)
                          (nape.south)                edge node[right,midway] {Phospholipase D} ($(aa.north)+(-40.2pt,0)$);
  \end{tikzpicture}
\end{document}

It is not an exact replication but looks quite good. Study the manuals of the involved packages to learn how to use them. A new package that bundles the two chemistry packages is mychemistry which could also be interesting.


Thorsten

[cgnieder]

Indeed, myChemistry was designed for that purpose and uses ChemFig to draw the formulae.
This is, how you'd solve the problem with myChemistry:

Code: Select all

\documentclass{scrartcl}
\usepackage{mychemistry}
\begin{document}
\setarrowlength{3em}
\begin{rxn}
 \reactant[,,fill=cyan!10,minimum width=.8\textwidth]{
   \chemname{\chemfig{Alky|l--[6](-[4,,,2]Alky|l)-[6]-O-P(=[2]O)(-[6]O-[,.5,,,draw=none]{\scriptstyle\ominus})-O-[:-30]-[:30]-[:-30]NH_2}}{\bfseries Phosphatidylethanolamine}
 }
 \arrow[below]{}{\textit{N}-acyltransferase}
 \reactant[below,,fill=gray!10,minimum width=.8\textwidth]{
   \chemname{\chemfig{Alky|l--[6](-[4,,,2]Alky|l)-[6]-O-P(=[2]O)(-[6]O-[,.5,,,draw=none]{\scriptstyle\ominus})-O-[:-30]-[:30]-[:-30]\chembelow{N}{H}-[:30](=[2]O)-[:-30]-[:30]-[:-30]-[:30]=-[:-30]-[:30]=-[:-60]-[::-60]=[:180]-[::-30]-[::60]=[:180]-[::-30]-[::60]-[::-60]-[::60]-[6]}}{\bfseries\textit{N}-arachidonoyl-PE}
 }
 \arrow[below]{}{Phospholipase D}
 \reactant[below,,fill=magenta!10,minimum width=.8\textwidth]{
   \chemname{\chemfig{HO-[:-30]-[:30]-[:-30]\chembelow{N}{H}-[:30](=[2]O)-[:-30]-[:30]-[:-30]-[:30]=-[:-30]-[:30]=-[:-60]-[::-60]=[:180]-[::-30]-[::60]=[:180]-[::-30]-[::60]-[::-60]-[::60]-[6]}}{\bfseries Anandamide}
 }
\end{rxn}
\end{document}

Regards