Succinate--CoA ligase [GDP-forming] subunit alpha

UniProtKB accession:  P09143

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UniProtKB description:  Succinyl-CoA synthetase functions in the citric acid cycle (TCA), coupling the hydrolysis of succinyl-CoA to the synthesis of either ATP or GTP and thus represents the only step of substrate-level phosphorylation in the TCA. The alpha subunit of the enzyme binds the substrates coenzyme A and phosphate, while succinate binding and nucleotide specificity is provided by the beta subunit (By similarity). Can use either ATP or GTP, but prefers GTP (PubMed:22751660).