ID A0A2U9BPE0_SCOMX Unreviewed; 331 AA.
AC A0A2U9BPE0;
DT 12-SEP-2018, integrated into UniProtKB/TrEMBL.
DT 12-SEP-2018, sequence version 1.
DT 27-MAR-2024, entry version 18.
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 Name=SUCLG1 {ECO:0000256|HAMAP-Rule:MF_03222};
GN ORFNames=SMAX5B_011432 {ECO:0000313|EMBL:AWP05549.1};
OS Scophthalmus maximus (Turbot) (Psetta maxima).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC Carangaria; Pleuronectiformes; Pleuronectoidei; Scophthalmidae;
OC Scophthalmus.
OX NCBI_TaxID=52904 {ECO:0000313|EMBL:AWP05549.1, ECO:0000313|Proteomes:UP000246464};
RN [1] {ECO:0000313|EMBL:AWP05549.1, ECO:0000313|Proteomes:UP000246464}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA Martinez P.;
RT "Integrating genomic resources of turbot (Scophthalmus maximus) in depth
RT evaluation of genetic and physical mapping variation across individuals.";
RL Submitted (DEC-2017) 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 the ATP-
CC specific beta subunit SUCLA2, forms an ADP-forming succinyl-CoA
CC synthetase (A-SCS). Together with the GTP-specific beta subunit SUCLG2
CC forms a GDP-forming succinyl-CoA synthetase (G-SCS).
CC {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; CP026250; AWP05549.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A2U9BPE0; -.
DR UniPathway; UPA00223; UER00999.
DR Proteomes; UP000246464; Chromosome 8.
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}; Reference proteome {ECO:0000313|Proteomes:UP000246464};
KW Tricarboxylic acid cycle {ECO:0000256|ARBA:ARBA00022532, ECO:0000256|HAMAP-
KW Rule:MF_03222}.
FT DOMAIN 29..125
FT /note="CoA-binding"
FT /evidence="ECO:0000259|SMART:SM00881"
FT ACT_SITE 284
FT /note="Tele-phosphohistidine intermediate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222,
FT ECO:0000256|PIRSR:PIRSR001553-1"
FT BINDING 42..45
FT /ligand="CoA"
FT /ligand_id="ChEBI:CHEBI:57287"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222"
FT BINDING 68
FT /ligand="CoA"
FT /ligand_id="ChEBI:CHEBI:57287"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222"
FT BINDING 121..123
FT /ligand="CoA"
FT /ligand_id="ChEBI:CHEBI:57287"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222"
FT BINDING 192
FT /ligand="substrate"
FT /ligand_note="ligand shared with subunit beta"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_03222"
SQ SEQUENCE 331 AA; 35020 MW; A90F1BF5C136E881 CRC64;
MSHCRLFARL LLQQSGVRHC YTGTRQNLYI TKDSKVICQG FTGKQGTFHS QQSLDYGSLL
VGGVSPGKGG KTHLGLPVFN SVKEAKEGTG ADATVIYVPP PFAAAAIIEA IDAEIALVVC
ITEGIPQQDM VRVKHRLLRQ SATRLIGPNC PGVINENVFF TQPGECKIGI MPGHIHKKGR
IGIVSRSGTL TYEAVHQTTQ VGLGQSLCIG IGGDPFNGTN FIDCLEVFLQ DPKTEGIILI
GEIGGDAEEN AAEYLKQHNS GANSKPVVSF IAGLTAPPGR RMGHAGAIIA GGKGGAKEKI
AALQSAGVVV SMSPAQLGST MFKEFEKRKM L
//
