Program ThreeCa written in Fortran 77 does pairwise protein 3-d structural comparison in seconds.

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Here is the structural comparison algorithm.
Publications related to this program.
Download the source codes now.

Please refer to the README file on how to install them.
Here is a brief document of ThreeCa. (under construction)

Download the source codes for converting PDB files to CA files.
Here is how to run ThreeCa to compare part of a protein, instead of the whole protein.

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Please send questions or suggestions to tsai@ncifcrf.gov
Sep 12, 2008