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Supplementary Information for the paper: An exhaustive survey of regular peptide conformations using a new metric for backbone handedness (h)

The subdirectory 'manuscript/' contains the latest manuscript: ramachandran_handedness.pdf
The subdirectory 'manuscript/figures/' contains the latest figure files in vector (PDF) format. '>cd manuscript; python' compiles the latex file 'ramachandran_handedness.tex' and produces 'ramachandran_handedness.pdf' ('>' indicates the command line prompt). For the this command to work out-of-the-box, you will need pdflatex (try '>pdflatex') and bibtex (try '>bibtex'). To use another latex executable, modify 'manuscript/'.

The main Python script that produces most of the main data within the paper is './' (tested in Python 2.7; requirements: a local installation of VMD, and the following Python modules: Numpy, Scipy, Biopython, Matplotlib; optional: Seaborn). The location of each figure's panel is stored in 'output.txt'. Another Python script ('./') downloads (from SCOP), analyzes and graphs various backbone structural distributions (e.g., distribution of secondary structural elements in Ramachandran plots).

To setup:
Uncompress 'imports_and_data.tgz' ('>tar xvzf imports_and_data.tgz'). This creates the main home for results -- './graphs/' (another directory './pdbs/' will also be created by the python script) -- and './local_imports' (which is used by the python script; also, useful VMD scripts are available there).

To re-render peptide configurations, you will need VMD (try '>vmd'; it is available here:


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