. "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." . . "aconitate hydratase activity" . "aconitase activity" . "cis-aconitase activity" . "citrate hydro-lyase activity" . "citrate(isocitrate) hydro-lyase (cis-aconitate-forming)" . "citrate(isocitrate) hydro-lyase activity" . . . . .