(4S)-4-hydroxy-2-oxoglutarate = glyoxylate + pyruvate (4R)-4-hydroxy-2-oxoglutarate = glyoxylate + pyruvate 2-dehydro-3-deoxy-6-phospho-D-gluconate = D-glyceraldehyde 3-phosphate + pyruvate Carbohydrate acid metabolism; 2-dehydro-3-deoxy-D-gluconate degradation; D-glyceraldehyde 3-phosphate and pyruvate from 2-dehydro-3-deoxy-D-gluconate: step 2/2. Carbohydrate metabolism; glyoxylate and dicarboxylate metabolism. Homotrimer. Induced by galacturonate and negatively regulated by the KdgR repressor. Is subject to catabolite repression by glucose involving the ccpA gene. Belongs to the KHG/KDPG aldolase family.