Reactome: a database of reactions, pathways and biological processes.
David CroftGavin O'KellyGuanming WuRobin HawMarc GillespieLisa MatthewsMichael CaudyPhani V. GarapatiGopal GopinathBijay JassalSteven JupeIrina KalatskayaShahana MahajanBruce MayNelson NdegwaEsther SchmidtVeronica ShamovskyChristina K. YungEwan BirneyHenning HermjakobPeter D'EustachioLincoln SteinPublished in: Nucleic Acids Res. (2011)