ID   FABI_RICPR              Reviewed;         261 AA.
AC   Q9ZDG4;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   03-AUG-2022, entry version 126.
DE   RecName: Full=Enoyl-[acyl-carrier-protein] reductase [NADH] FabI;
DE            Short=ENR;
DE            EC=1.3.1.9;
DE   AltName: Full=NADH-dependent enoyl-ACP reductase;
GN   Name=fabI; OrderedLocusNames=RP365;
OS   Rickettsia prowazekii (strain Madrid E).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; typhus group.
OX   NCBI_TaxID=272947;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Madrid E;
RX   PubMed=9823893; DOI=10.1038/24094;
RA   Andersson S.G.E., Zomorodipour A., Andersson J.O., Sicheritz-Ponten T.,
RA   Alsmark U.C.M., Podowski R.M., Naeslund A.K., Eriksson A.-S., Winkler H.H.,
RA   Kurland C.G.;
RT   "The genome sequence of Rickettsia prowazekii and the origin of
RT   mitochondria.";
RL   Nature 396:133-140(1998).
CC   -!- FUNCTION: Catalyzes the reduction of a carbon-carbon double bond in an
CC       enoyl moiety that is covalently linked to an acyl carrier protein
CC       (ACP). Involved in the elongation cycle of fatty acid which are used in
CC       the lipid metabolism (By similarity). {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 2,3-saturated acyl-[ACP] + NAD(+) = a (2E)-enoyl-[ACP] +
CC         H(+) + NADH; Xref=Rhea:RHEA:10240, Rhea:RHEA-COMP:9925, Rhea:RHEA-
CC         COMP:9926, ChEBI:CHEBI:15378, ChEBI:CHEBI:57540, ChEBI:CHEBI:57945,
CC         ChEBI:CHEBI:78784, ChEBI:CHEBI:78785; EC=1.3.1.9;
CC   -!- PATHWAY: Lipid metabolism; fatty acid biosynthesis.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the short-chain dehydrogenases/reductases (SDR)
CC       family. FabI subfamily. {ECO:0000305}.
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DR   EMBL; AJ235271; CAA14824.1; -; Genomic_DNA.
DR   PIR; F71693; F71693.
DR   RefSeq; NP_220748.1; NC_000963.1.
DR   RefSeq; WP_004597508.1; NC_000963.1.
DR   AlphaFoldDB; Q9ZDG4; -.
DR   SMR; Q9ZDG4; -.
DR   STRING; 272947.RP365; -.
DR   EnsemblBacteria; CAA14824; CAA14824; CAA14824.
DR   GeneID; 57569489; -.
DR   KEGG; rpr:RP365; -.
DR   PATRIC; fig|272947.5.peg.374; -.
DR   eggNOG; COG0623; Bacteria.
DR   HOGENOM; CLU_010194_10_1_5; -.
DR   OMA; GILDMIH; -.
DR   UniPathway; UPA00094; -.
DR   Proteomes; UP000002480; Chromosome.
DR   GO; GO:0004318; F:enoyl-[acyl-carrier-protein] reductase (NADH) activity; ISS:UniProtKB.
DR   GO; GO:0016631; F:enoyl-[acyl-carrier-protein] reductase activity; IEA:UniProtKB-EC.
DR   GO; GO:0042802; F:identical protein binding; ISS:UniProtKB.
DR   GO; GO:0030497; P:fatty acid elongation; ISS:UniProtKB.
DR   CDD; cd05372; ENR_SDR; 1.
DR   InterPro; IPR014358; Enoyl-ACP_Rdtase_NADH.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR002347; SDR_fam.
DR   PANTHER; PTHR43159; PTHR43159; 1.
DR   PIRSF; PIRSF000094; Enoyl-ACP_rdct; 1.
DR   PRINTS; PR00081; GDHRDH.
DR   SUPFAM; SSF51735; SSF51735; 1.
PE   3: Inferred from homology;
KW   Fatty acid biosynthesis; Fatty acid metabolism; Lipid biosynthesis;
KW   Lipid metabolism; NAD; Oxidoreductase; Reference proteome.
FT   CHAIN           1..261
FT                   /note="Enoyl-[acyl-carrier-protein] reductase [NADH] FabI"
FT                   /id="PRO_0000054909"
FT   ACT_SITE        147
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   ACT_SITE        157
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000250"
FT   BINDING         15
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         21..22
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         42
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         66..67
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         94
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         97
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         164
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
FT   BINDING         193..197
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   261 AA;  28538 MW;  976438A752A8C786 CRC64;
     MTTGLLQGKK GLITGIANNM SISWAIAQLA KKHGAELWFT YQSEVLEKRV KPLAEEIGCN
     FISELDVTNQ KSISNLFNDI KEKWNSFDFL LHGMAFANKN ELKGRYVETS LENFHNSLHI
     SCYSLLELSR SAETLMHNGG SIVTLTYYGA EKVIPNYNIM GVAKAALEAS VKYLANDMGE
     NNIRVNAISA GPIKTLASSA ISDFSTMLKS HAATAPLKRN ITQEDVGGAA VYLFSELSKG
     VTGEIHYVDC GYNIIGSSKL L