Doppelganger : Cloning and characterization of a soluble kynure nine aminotransferase from rat brain: identity with kidney cysteine conjugate β-lyase Alberati-Giani D, Malherbe P, Köhler C, Lang G, Kiefer V, Lahm H-W and Cesura AM Journal of Neurochemistry 1995; 64: 1448-1455