ID A0A0L8G938_OCTBM Unreviewed; 330 AA.
AC A0A0L8G938;
DT 11-NOV-2015, integrated into UniProtKB/TrEMBL.
DT 11-NOV-2015, sequence version 1.
DT 27-MAR-2024, entry version 34.
DE RecName: Full=Succinate--CoA ligase [ADP/GDP-forming] subunit alpha, mitochondrial {ECO:0000256|HAMAP-Rule:MF_03222};
DE EC=6.2.1.4 {ECO:0000256|HAMAP-Rule:MF_03222};
DE EC=6.2.1.5 {ECO:0000256|HAMAP-Rule:MF_03222};
DE AltName: Full=Succinyl-CoA synthetase subunit alpha {ECO:0000256|HAMAP-Rule:MF_03222};
DE Short=SCS-alpha {ECO:0000256|HAMAP-Rule:MF_03222};
GN ORFNames=OCBIM_22038431mg {ECO:0000313|EMBL:KOF73075.1};
OS Octopus bimaculoides (California two-spotted octopus).
OC Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Cephalopoda;
OC Coleoidea; Octopodiformes; Octopoda; Incirrata; Octopodidae; Octopus.
OX NCBI_TaxID=37653 {ECO:0000313|EMBL:KOF73075.1};
RN [1] {ECO:0000313|EMBL:KOF73075.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=UCB-OBI-ISO-001 {ECO:0000313|EMBL:KOF73075.1};
RC TISSUE=Gonad {ECO:0000313|EMBL:KOF73075.1};
RA Tran T., Druce J.;
RT "MeaNS - Measles Nucleotide Surveillance Program.";
RL Submitted (JUL-2015) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Succinyl-CoA synthetase functions in the citric acid cycle
CC (TCA), coupling the hydrolysis of succinyl-CoA to the synthesis of
CC either ATP or GTP and thus represents the only step of substrate-level
CC phosphorylation in the TCA. The alpha subunit of the enzyme binds the
CC substrates coenzyme A and phosphate, while succinate binding and
CC specificity for either ATP or GTP is provided by different beta
CC subunits. {ECO:0000256|HAMAP-Rule:MF_03222}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + CoA + succinate = ADP + phosphate + succinyl-CoA;
CC Xref=Rhea:RHEA:17661, ChEBI:CHEBI:30031, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:57287, ChEBI:CHEBI:57292,
CC ChEBI:CHEBI:456216; EC=6.2.1.5; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_03222};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=CoA + GTP + succinate = GDP + phosphate + succinyl-CoA;
CC Xref=Rhea:RHEA:22120, ChEBI:CHEBI:30031, ChEBI:CHEBI:37565,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:57287, ChEBI:CHEBI:57292,
CC ChEBI:CHEBI:58189; EC=6.2.1.4; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_03222};
CC -!- PATHWAY: Carbohydrate metabolism; tricarboxylic acid cycle; succinate
CC from succinyl-CoA (ligase route): step 1/1. {ECO:0000256|HAMAP-
CC Rule:MF_03222}.
CC -!- SUBUNIT: Heterodimer of an alpha and a beta subunit. Different beta
CC subunits determine nucleotide specificity. Together with an ATP-
CC specific beta subunit, forms an ADP-forming succinyl-CoA synthetase (A-
CC SCS). Together with a GTP-specific beta subunit forms a GDP-forming
CC succinyl-CoA synthetase (G-SCS). {ECO:0000256|HAMAP-Rule:MF_03222}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion {ECO:0000256|HAMAP-Rule:MF_03222}.
CC -!- SIMILARITY: Belongs to the succinate/malate CoA ligase alpha subunit
CC family. {ECO:0000256|HAMAP-Rule:MF_03222,
CC ECO:0000256|RuleBase:RU000677}.
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DR EMBL; KQ423338; KOF73075.1; -; Genomic_DNA.
DR RefSeq; XP_014783306.1; XM_014927820.1.
DR AlphaFoldDB; A0A0L8G938; -.
DR STRING; 37653.A0A0L8G938; -.
DR EnsemblMetazoa; Ocbimv22038431m; Ocbimv22038431m.p; Ocbimv22038431m.g.
DR EnsemblMetazoa; XM_014927820.1; XP_014783306.1; LOC106878574.
DR GeneID; 106878574; -.
DR KEGG; obi:106878574; -.
DR OMA; VIICITE; -.
DR OrthoDB; 474at2759; -.
DR UniPathway; UPA00223; UER00999.
DR GO; GO:0005739; C:mitochondrion; IEA:UniProtKB-SubCell.
DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-KW.
DR GO; GO:0004775; F:succinate-CoA ligase (ADP-forming) activity; IEA:UniProtKB-UniRule.
DR GO; GO:0004776; F:succinate-CoA ligase (GDP-forming) activity; IEA:UniProtKB-EC.
DR GO; GO:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
DR Gene3D; 3.40.50.261; Succinyl-CoA synthetase domains; 1.
DR HAMAP; MF_01988; Succ_CoA_alpha; 1.
DR InterPro; IPR017440; Cit_synth/succinyl-CoA_lig_AS.
DR InterPro; IPR033847; Citrt_syn/SCS-alpha_CS.
DR InterPro; IPR003781; CoA-bd.
DR InterPro; IPR005810; CoA_lig_alpha.
DR InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR InterPro; IPR005811; SUCC_ACL_C.
DR InterPro; IPR016102; Succinyl-CoA_synth-like.
DR NCBIfam; TIGR01019; sucCoAalpha; 1.
DR PANTHER; PTHR11117:SF2; SUCCINATE--COA LIGASE [ADP_GDP-FORMING] SUBUNIT ALPHA, MITOCHONDRIAL; 1.
DR PANTHER; PTHR11117; SUCCINYL-COA LIGASE SUBUNIT ALPHA; 1.
DR Pfam; PF02629; CoA_binding; 1.
DR Pfam; PF00549; Ligase_CoA; 1.
DR PIRSF; PIRSF001553; SucCS_alpha; 1.
DR PRINTS; PR01798; SCOASYNTHASE.
DR SMART; SM00881; CoA_binding; 1.
DR SUPFAM; SSF51735; NAD(P)-binding Rossmann-fold domains; 1.
DR SUPFAM; SSF52210; Succinyl-CoA synthetase domains; 1.
DR PROSITE; PS01216; SUCCINYL_COA_LIG_1; 1.
DR PROSITE; PS00399; SUCCINYL_COA_LIG_2; 1.
PE 3: Inferred from homology;
KW Ligase {ECO:0000256|HAMAP-Rule:MF_03222, ECO:0000256|RuleBase:RU000677};
KW Mitochondrion {ECO:0000256|HAMAP-Rule:MF_03222};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_03222};
KW Tricarboxylic acid cycle {ECO:0000256|ARBA:ARBA00022532, ECO:0000256|HAMAP-
KW Rule:MF_03222}.
FT DOMAIN 37..133
FT /note="CoA-binding"
FT /evidence="ECO:0000259|SMART:SM00881"
FT ACT_SITE 285
FT /note="Tele-phosphohistidine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222,
FT ECO:0000256|PIRSR:PIRSR001553-1"
FT BINDING 50..53
FT /ligand="CoA"
FT /ligand_id="ChEBI:CHEBI:57287"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222"
FT BINDING 76
FT /ligand="CoA"
FT /ligand_id="ChEBI:CHEBI:57287"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222"
FT BINDING 129..131
FT /ligand="CoA"
FT /ligand_id="ChEBI:CHEBI:57287"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222"
FT BINDING 193
FT /ligand="substrate"
FT /ligand_note="ligand shared with subunit beta"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222"
SQ SEQUENCE 330 AA; 34511 MW; CD8FA76027BE899A CRC64;
MAVCRSVARL LVPKNVGIPQ CFNSVRTNYT GTRPHLMIGK DTKLICQGLT GKQGTFHSEQ
CISYGTQMVG GVSPAKAGTT HLGLPVFASV KEAVNKTGAN ATVIFVPPPA AAKAIDEAID
AEIPLVVCIT EGIPQQDMVK VKHKLVRQSK TRLIGPNCPG IIKPGECKIG IMPGHIHQQG
NIGIVSRSGT LTYEAVHQTT AVGLGQTLCV GIGGDPFNGT DFIDCLEVFI QDPNTKGIVL
IGEIGGQAEE NAAEYLKEHN KGPNAKPVVS FIAGLTAPPG RRMGHAGAII AGGKGGANEK
IEALREAGVH VTDSPAQMGS TMVKAMQMRS
//
