Pathway commons
Get Pathway Commons release
curl -O http://www.pathwaycommons.org/archives/PC2/v10/PathwayCommons10.All.BIOPAX.owl.gz
Convert to Property Graph
grip rdf --dump --gzip pc PathwayCommons10.All.BIOPAX.owl.gz -m "http://pathwaycommons.org/pc2/#=pc:" -m "http://www.biopax.org/release/biopax-level3.owl#=biopax:"