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Overview

Uniprot IDA0A8I5ZV34
Protein NameSuccinate--CoA ligase [GDP-forming] subunit beta, mitochondrial
Gene NameSuclg2
OrganismRattus norvegicus

Kla Sites from experimental identification

Position Flanking peptide
103 GVFDSGLKGGVHLTK
49 LQEYQSKKLMSEHGV
68 FFVASTAKEAQEAAK
95 ILAGGRGKGVFDSGL

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. Also able to act as a GTP-specific itaconyl- and malyl-CoA synthetase

Protein Sequence

10 MASAVAIAAQ 20 AGKLLRERSL 30 RPRLLAVRSQ 40 AGHLTPRRWL 50 NLQEYQSKKL 60 MSEHGVRVQR 70 FFVASTAKEA 80 QEAAKRLNAK 90 EIVLKAQILA 100 GGRGKGVFDS 110 GLKGGVHLTK 120 DPKVVGQLAQ 130 QMIGYNLATK 140 QTPKEGVKVN 150 KVMVAEALDI 160 SRETYLAILM 170 DRSHNGPVLV 180 GSPQGGVDIE 190 EVAASSPELI 200 FKEQIDIFEG 210 IKDSQAQRMA 220 ENLGFLGSLK 230 NQAADQIKKL 240 YHLFLKIDAT 250 QVEVNPFGET 260 PEGQVVCFDA 270 KINFDDNAEF 280 RQKDIFAMDD 290 KSENEPIENE 300 AARYDLKYIG 310 LDGNIACFVN 320 GAGLAMATCD 330 IIFLNGGKPA 340 NFLDLGGGVK 350 ESQVYQAFKL 360 LTSDPKVEAI 370 LVNIFGGIVN 380 CAIIANGITK 390 ACQELELKVP 400 LVVRLEGSCP A

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005739 mitochondrion
Molecular Function GO:0005524 ATP binding
Molecular Function GO:0005525 GTP binding
Molecular Function GO:0000287 magnesium ion binding
Molecular Function GO:0004775 succinate-CoA ligase (ADP-forming) activity
Molecular Function GO:0004776 succinate-CoA ligase (GDP-forming) activity
Biological Process GO:0006104 succinyl-CoA metabolic process
Biological Process GO:0006099 tricarboxylic acid cycle

Reference

[1] Chen Y, Sun W, Sun Z, Zhao H, Wu T et al.. Effect of electroacupuncture on hippocampal protein lactylation in a rat model of vascular dementia.. Front Neurol 16:1629474. 2025. PMID: 40963935.