Fig. 3. Sources of
-ketoglutarate in the E2Fa-DPa-overproducing cells. Genes encoding enzymes shown in red and green are up-regulated or down-regulated in the E2Fa-DPa versus wild-type plants, respectively. Products indicated in blue act as precursors for nucleotide biosynthesis.
-KG,
-ketoglutarate; GOGAT, glutamate synthase; GS, glutamine synthetase; NIA2, nitrate reductase; NiR, nitrite reductase.