<Tr> <Td> </Td> <Td> Citrate </Td> <Td> cis - Aconitate + H O </Td> <Td> Aconitase </Td> <Td> Dehydration </Td> <Td> reversible isomerisation </Td> </Tr> <Tr> <Td> </Td> <Td> cis - Aconitate + H O </Td> <Td> Isocitrate </Td> <Td> Hydration </Td> </Tr> <Tr> <Td> </Td> <Td> Isocitrate + NAD </Td> <Td> Oxalosuccinate + NADH + H </Td> <Td> Isocitrate dehydrogenase </Td> <Td> Oxidation </Td> <Td> generates NADH (equivalent of 2.5 ATP) </Td> </Tr> <Tr> <Td> </Td> <Td> Oxalosuccinate </Td> <Td> α - Ketoglutarate + CO </Td> <Td> Decarboxylation </Td> <Td> rate - limiting, irreversible stage, generates a 5C molecule </Td> </Tr>

What does succinate dehydrogenase do in the tca (i.e. kreb's) cycle