<prompt> Rate limiting step of TCA :Citrate synthaseIsocitrate dehydrogenaseAlpha-ketoglutarate dehydrogenaseAll  <response>: 3 enzymes which are rate limiting in TCA cycle Irreversible steps of TCA 1. Citrate Synthase 1. Citrate Synthase preferred 2. Isocitrate Dehydrogenase 2. Alpha-Ketoglutarate Dehydrogenase. 3. Alpha-Ketoglutarate Dehydrogenase 