Gtp or atp is produced during the conversion of
isocitrate into î±-ketoglutarate
succinyl coa into succinate
fumarate into malate
malate into oxaloacetate

succinyl CoA into succinate

Explanation:

Guanosine triphosphate (GTP) is equivalent to ATP. Both can be interconverted and are used as source of energy. During citric acid cycle, GTP is produced in the fifth step of citric acid cycle. It is produced when succinyl CoA is converted to succinic acid. In this reaction CoA is removed and GTP is synthesised from GDP.  

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