[Software License Agreement]
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If you want to use the DSSP program for secondary structure assignment by W. Kabsch and C. Sander , you need to download the executable file for either Windows or Linux at the following site.http://swift.cmbi.ru.nl/gv/dssp/
The downloaded file should be put in the bin folder/directory of PDBETA.
If the DSSP file does not exist in the bin folder/directory, PDBETA uses the information on secondary structure assignment in the PDB data.
 W. Kabsch and C. Sander, Dictionary of protein secondary structure: pattern recognition of hydrogen-bonded and geometrical features. Biopolymers 22 (1983) 2577-2637.