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Sebastian Raschka

ZINC Molecule Downloader

A command line tool for downloading 3D structures of small chemical molecules from http://zinc.docking.org.



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An input file is just a simple 1-column text file of ZINC codes, e.g.,

ZINC08714378
ZINC59339553
ZINC67643437
ZINC05481096

By executing the following line, all ZINC codes from an input file ids.txt are queried and the molecular structures are downloaded as individual files or a multi-structure file. For example, a single multi-structure SDF file is created by executing the following code:

> python zinc_downloader.py -i ./ids.txt -o ./zinc.sdf --filetype sdf


Downloading ZINC Molecules
0%               100%
[####               ] | ETA[sec]: 31.431 | Item ID: ZINC54810967




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The PDB Info Table tool was tested in Python 3.4 and Python 2.7. The required packages

beautifulsoup4>=4.4.0
lxml>=3.4.4
PyPrind>=2.9.3

can be downloaded and installed via pip

pip install -r requirements.txt


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> python zinc_downloader.py -h
usage: zinc_downloader.py [-h] [-i INPUT] [-o OUTPUT_FILE] [-d OUTPUT_DIR]
                          [-f FILETYPE] [-v]

A command line tool for downloading 3D structures of small chemical molecules from http://zinc.docking.org.

optional arguments:
  -h, --help            show this help message and exit
  -i INPUT, --input INPUT
                        One-column text file with ZINC codes
  -o OUTPUT_FILE, --output_file OUTPUT_FILE
                        Filename for creating a single output file
  -d OUTPUT_DIR, --output_dir OUTPUT_DIR
                        Directory name for saving multiple output files
  -f FILETYPE, --filetype FILETYPE
                        Filetype set(['smiles', 'sdf', 'flexibase', 'mol2']), default=mol2
  -v, --version         show program's version number and exit

Example run:
./zinc_downloader.py -i ./examples/ids.txt -o ./examples/1file.mol2

Example input file:
ZINC08714378
ZINC59339553
ZINC67643437
[...]


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  • v1.0 2015-09-05