Source:http://linkedlifedata.com/resource/umls/id/C1150944
GO: Catalysis of the reactions: citrate = cis-aconitate + H2O, and cis-aconitate + H2O = isocitrate. This reaction is the interconversion of citrate and isocitrate via the labile, enzyme-bound intermediate cis-aconitate. Water is removed from one part of the citrate molecule and added back to a different atom to form isocitrate. [EC:4.2.1.3, GOC:pde, GOC:vw]