Coenzyme A (CoA) transferase that reversibly catalyzes the transfer of a CoA moiety from a dicarboxyl-CoA to a dicarboxylate in a metabolite recycling process. Displays preference for succinyl-CoA and glutarate-CoA as dicarboxyl-CoA donors and glutarate, succinate, adipate/hexanedioate, itaconate and 3-hydroxy-3-methylglutarate as dicarboxylate acceptors (PubMed:23893049, PubMed:34492704, PubMed:38915184). Acts on intermediates or end products of lysine and tryptophan degradation pathway, in particular catalyzes succinyl-CoA- dependent reesterification of free glutarate into glutaryl-CoA to prevent renal excretion of glutarate (PubMed:18926513, PubMed:23893049, PubMed:38915184). Upon inflammation, may convert macrophage-derived itaconate to itaconyl-CoA in erythroid precursors where it negatively regulates the TCA cycle and heme synthesis to limit erythroid differentiation in the context of stress erythropoiesis (PubMed:34492704). {ECO:0000269|PubMed:18926513, ECO:0000269|PubMed:23893049, ECO:0000269|PubMed:34492704, ECO:0000269|PubMed:38915184}. This is the function of SUGCT (succinyl-CoA:glutarate-CoA transferase, Ensembl gene identifier ENSG00000175600).