Dear all, I'm working on a project where I need a gold standard for protein-protein interaction. I got a recommendation to use all physical interactions from Reactome pathways (and also KEGG) but it's not clear to me how to retrieve the interactions from the pathways. There is a number of downloads on the Reactome website (http://www.reactome.org/download/index.html) but none of them seem to fit the bill. I tried to inspect the SBML and BioPAX files but I had trouble finding software which would handle such large files. I also looked at the database schema at http://www.reactome.org/cgi-bin/classbrowser?DB=gk_current but again I can't find the relevant information.
I would greatly appreciate any hints where the interaction data are so I can write a script to extract them.