A packaged software for use in salt bridge analysis in protein stability and rigidity. Reads in a hydrogenated and uniquely atomically numbered pdb file and provides constraint files "cov.in" "hbonds.in" and "hphobes.in" - for use with the FIRST softwares rigidity analysis suite - that correctly handle salt bridges and strong polar interactions within the structure.
Also included are the hydrogenated and formatted pdb files of a variety of thermophilic citrate synthase structures as used in the work for the publication "Salt bridge impact on global rigidity and thermostability in thermophilic citrate synthase" by this dataset's authors.