SUCLG2
Function
GTP-specific succinyl-CoA synthetase functions in the citric acid cycle (TCA), coupling the hydrolysis of succinyl-CoA to the synthesis of GTP and thus represents the only step of substrate-level phosphorylation in the TCA. The beta subunit provides nucleotide specificity of the enzyme and binds the substrate succinate, while the binding sites for coenzyme A and phosphate are found in the alpha subunit.
Pathway
Carbohydrate metabolism; tricarboxylic acid cycle; succinate from succinyl-CoA (ligase route): step 1/1.
Sequence Similarities
Belongs to the succinate/malate CoA ligase beta subunit family. GTP-specific subunit beta subfamily.
Tissue Specificity
Mainly expressed in liver, kidney, heart, spleen and skeletal muscle. Also found in intestine and colon, and in low amounts in lung, brain, prostate, testis and ovary.
Cellular localization
- Mitochondrion
Alternative names
GTP-specific succinyl-CoA synthetase subunit beta, Succinyl-CoA synthetase beta-G chain, G-SCS, GTPSCS, SCS-betaG, SUCLG2