#CPATH2 instance: Pathway Commons 2 version 3
#Columns:ID	DESCRIPTION	TYPE	HOMEPAGE	PATHWAYS	INTERACTIONS	PHYS.ENTITIES
http://purl.org/pc2/3/chebi	ChEBI Complete SDF 2013/04/02	WAREHOUSE	http://www.ebi.ac.uk/chebi/			
http://purl.org/pc2/3/uniprot_sprot_human	UniProtKB/Swiss-Prot human 2013/04/03	WAREHOUSE	http://www.uniprot.org			
http://purl.org/pc2/3/reactome44_human	Reactome v44 (only 'Homo sapiens.owl'; post-fix) 2013/04/16	BIOPAX	http://www.reactome.org	1407	9350	24758
http://purl.org/pc2/3/pid	NCI_Nature Curated Human Pathways from PID; 2012/08/16 (XML errors fixed)	BIOPAX	http://pid.nci.nih.gov/	2074	28596	26201
http://purl.org/pc2/3/psp	PhosphoSite Kinase-substrate information; 2013/02/15	BIOPAX	http://www.phosphosite.org	0	22939	12890
http://purl.org/pc2/3/humancyc16	HumanCyc 16; 2012/02/15	BIOPAX	http://www.humancyc.org	244	5508	4633
http://purl.org/pc2/3/hprd9	HPRD PSI-MI release9; April 13, 2010	PSI_MI	http://www.hprd.org	0	40618	9871
http://purl.org/pc2/3/panther	PANTHER Pathways; 2013/04	BIOPAX	http://www.pantherdb.org	297	5299	8640