As someone already mentioned in one of the following questions, the TCA circuit generates GTP in addition to NADH and FADH2. The fate of NADH and FADH2 is clear: they are used to pump protons in the electron transfer system.
However, the fate of GTP seems less clearly described. I have seen a weak statement that "1 mol of GTP can produce 1 mol of ATP," but I do not know when, where, what, and how the energy of GTP is diverted to the production of ATP.
When, where, what and how GTP generated in the TCA circuit is used to generate ATP