ID   SUCD_RICCN              Reviewed;         292 AA.
AC   Q92I22;
DT   15-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2001, sequence version 1.
DT   03-AUG-2022, entry version 110.
DE   RecName: Full=Succinate--CoA ligase [ADP-forming] subunit alpha {ECO:0000255|HAMAP-Rule:MF_01988};
DE            EC=6.2.1.5 {ECO:0000255|HAMAP-Rule:MF_01988};
DE   AltName: Full=Succinyl-CoA synthetase subunit alpha {ECO:0000255|HAMAP-Rule:MF_01988};
DE            Short=SCS-alpha {ECO:0000255|HAMAP-Rule:MF_01988};
GN   Name=sucD {ECO:0000255|HAMAP-Rule:MF_01988}; OrderedLocusNames=RC0598;
OS   Rickettsia conorii (strain ATCC VR-613 / Malish 7).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; spotted fever group.
OX   NCBI_TaxID=272944;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC VR-613 / Malish 7;
RX   PubMed=11557893; DOI=10.1126/science.1061471;
RA   Ogata H., Audic S., Renesto-Audiffren P., Fournier P.-E., Barbe V.,
RA   Samson D., Roux V., Cossart P., Weissenbach J., Claverie J.-M., Raoult D.;
RT   "Mechanisms of evolution in Rickettsia conorii and R. prowazekii.";
RL   Science 293:2093-2098(2001).
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       nucleotide specificity is provided by the beta subunit.
CC       {ECO:0000255|HAMAP-Rule:MF_01988}.
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:0000255|HAMAP-
CC         Rule:MF_01988};
CC   -!- PATHWAY: Carbohydrate metabolism; tricarboxylic acid cycle; succinate
CC       from succinyl-CoA (ligase route): step 1/1. {ECO:0000255|HAMAP-
CC       Rule:MF_01988}.
CC   -!- SUBUNIT: Heterotetramer of two alpha and two beta subunits.
CC       {ECO:0000255|HAMAP-Rule:MF_01988}.
CC   -!- SIMILARITY: Belongs to the succinate/malate CoA ligase alpha subunit
CC       family. {ECO:0000255|HAMAP-Rule:MF_01988}.
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DR   EMBL; AE006914; AAL03136.1; -; Genomic_DNA.
DR   PIR; F97774; F97774.
DR   RefSeq; WP_010977229.1; NC_003103.1.
DR   AlphaFoldDB; Q92I22; -.
DR   SMR; Q92I22; -.
DR   EnsemblBacteria; AAL03136; AAL03136; RC0598.
DR   KEGG; rco:RC0598; -.
DR   PATRIC; fig|272944.4.peg.683; -.
DR   HOGENOM; CLU_052104_0_0_5; -.
DR   OMA; VIICITE; -.
DR   UniPathway; UPA00223; UER00999.
DR   Proteomes; UP000000816; Chromosome.
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:0006099; P:tricarboxylic acid cycle; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.261; -; 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; IPR005811; CoA_ligase.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR016102; Succinyl-CoA_synth-like.
DR   Pfam; PF02629; CoA_binding; 1.
DR   Pfam; PF00549; Ligase_CoA; 1.
DR   PIRSF; PIRSF001553; SucCS_alpha; 1.
DR   SMART; SM00881; CoA_binding; 1.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   SUPFAM; SSF52210; SSF52210; 1.
DR   TIGRFAMs; TIGR01019; sucCoAalpha; 1.
DR   PROSITE; PS01216; SUCCINYL_COA_LIG_1; 1.
DR   PROSITE; PS00399; SUCCINYL_COA_LIG_2; 1.
PE   3: Inferred from homology;
KW   Ligase; Nucleotide-binding; Tricarboxylic acid cycle.
FT   CHAIN           1..292
FT                   /note="Succinate--CoA ligase [ADP-forming] subunit alpha"
FT                   /id="PRO_0000286488"
FT   ACT_SITE        248
FT                   /note="Tele-phosphohistidine intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01988"
FT   BINDING         17..20
FT                   /ligand="CoA"
FT                   /ligand_id="ChEBI:CHEBI:57287"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01988"
FT   BINDING         43
FT                   /ligand="CoA"
FT                   /ligand_id="ChEBI:CHEBI:57287"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01988"
FT   BINDING         96..98
FT                   /ligand="CoA"
FT                   /ligand_id="ChEBI:CHEBI:57287"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01988"
FT   BINDING         159
FT                   /ligand="substrate"
FT                   /ligand_note="ligand shared with subunit beta"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01988"
SQ   SEQUENCE   292 AA;  30297 MW;  4432AA56B5C7D6E7 CRC64;
     MAILINKKTQ VICQGFTGLQ GTFHSEQAIA YGTNMVGGVT PGKGGHTHLD LPVYNTVHEA
     KAKTGANASV IYVPPGFAAD SILEAIDAEI EVVVCITEGI PVLDMVKVKR ALVGSKTRLI
     GPNCPGVITP GECKIGIMPG HIHKRGTIGI VSRSGTLTYE AVAQTTAVGL GQSTCIGIGG
     DPVNGTNFVD CIEMFLKDDE TKAIIMIGEI GGNAEEDAAE FIKQSKIKKP IVSFIAGITA
     PPGKRMGHAG AIIVGRTGSA EDKLEALQSA GVIITRSPAD IGKTMLDLLN KG