Figure 1. Three-dimensional model view of the maize chloroplastic C₄-NADP⁺-ME corresponding to the active site of the enzyme.

(A) The predicted model was obtained using human mitochondrial NAD(P)⁺-ME complexed with their substrates as templates. The position of Lys-255 and Arg-237 relative to tartronate (analogue of malate) is shown. (B) The predicted model was obtained using pigeon liver NADP⁺-ME in order to analyse the position of the 2′-phosphate in NADP⁺ relative to Lys-435 and Lys-436. The Figures were created by using Swiss Protein Data Bank Viewer version 3.7.