The MetaCyc database of metabolic pathways and enzymes.
Ron CaspiRichard BillingtonCarol A. FulcherIngrid M. KeselerAnamika KothariMarkus KrummenackerMario LatendressePeter E. MidfordQuang OngWai Kit OngSuzanne M. PaleyPallavi SubhravetiPeter D. KarpPublished in: Nucleic Acids Res. (2018)