Botany - Respiration in Plants Question with Solution | TestHub

Substrate-level phosphorylation: In the presence of the enzyme succinyl CoA synthetase or succinyl thiokinase, succinyl CoA is converted into succinate, producing GTP as the source of energy. This GTP then in the presence of phosphokinase gets converted into ATP.

$\mathrm{Succinyl} \mathrm{CoA} + \mathrm{GDP} + \mathrm{Pi} \stackrel{\mathrm{Succinyl} \mathrm{CoA} \mathrm{synthetase}/\mathrm{Succinyl} \mathrm{thiokinase}}{\to } \mathrm{Succinate} + \mathrm{GTP} + \mathrm{CoA}$