Enzyme name Gene TCA-cycle Citrate synthase gltA rl2508 rl2509 rl2234 aconitate hydatase (aconitase) asn rl4536 isocitrate dehydrogenase icd rl2631 2-oxoglutarate dehydrogenase sucAB rl4435 (A) rl4433 (B) succinylCoA synthetase sucCD rl4438 (C) rl4436 (D) succinate dehydrogenase sdhCDAB rl4443 (B) rl4444 (A) rl4445 (D) rl4446 (C) fumaraseC fumC rl2701 FumaraseA fumA rl2703 malate dehydrogenase mdh rl4439 Entner-Doudoroff Pathway Glucose-6-phosphate-1-dehydrogenase zwf rl0753 6-phosphogluconolactonase pgl rl0752 putative phosphogluconate dehydratase edd rl0751 Oxidative branch Pentose phosphate glucose-6-phosphate dehydrogenase see Entner-Doudoroff 6-phosphogluconolactone lactonase see Entner-Doudoroff 6-phosphogluconate dehydrogenase rl2807 (gnd) rl3998 (gntZ)