ID   FABG_RICTY              Reviewed;         241 AA.
AC   Q68VY7;
DT   15-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   11-OCT-2004, sequence version 1.
DT   03-AUG-2022, entry version 104.
DE   RecName: Full=3-oxoacyl-[acyl-carrier-protein] reductase FabG;
DE            EC=1.1.1.100;
DE   AltName: Full=3-ketoacyl-acyl carrier protein reductase;
DE   AltName: Full=Beta-Ketoacyl-acyl carrier protein reductase;
DE   AltName: Full=Beta-ketoacyl-ACP reductase;
GN   Name=fabG; OrderedLocusNames=RT0748;
OS   Rickettsia typhi (strain ATCC VR-144 / Wilmington).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales;
OC   Rickettsiaceae; Rickettsieae; Rickettsia; typhus group.
OX   NCBI_TaxID=257363;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC VR-144 / Wilmington;
RX   PubMed=15317790; DOI=10.1128/jb.186.17.5842-5855.2004;
RA   McLeod M.P., Qin X., Karpathy S.E., Gioia J., Highlander S.K., Fox G.E.,
RA   McNeill T.Z., Jiang H., Muzny D., Jacob L.S., Hawes A.C., Sodergren E.,
RA   Gill R., Hume J., Morgan M., Fan G., Amin A.G., Gibbs R.A., Hong C.,
RA   Yu X.-J., Walker D.H., Weinstock G.M.;
RT   "Complete genome sequence of Rickettsia typhi and comparison with sequences
RT   of other Rickettsiae.";
RL   J. Bacteriol. 186:5842-5855(2004).
CC   -!- FUNCTION: Catalyzes the NADPH-dependent reduction of beta-ketoacyl-ACP
CC       substrates to beta-hydroxyacyl-ACP products, the first reductive step
CC       in the elongation cycle of fatty acid biosynthesis. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a (3R)-hydroxyacyl-[ACP] + NADP(+) = a 3-oxoacyl-[ACP] + H(+)
CC         + NADPH; Xref=Rhea:RHEA:17397, Rhea:RHEA-COMP:9916, Rhea:RHEA-
CC         COMP:9945, ChEBI:CHEBI:15378, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349,
CC         ChEBI:CHEBI:78776, ChEBI:CHEBI:78827; EC=1.1.1.100;
CC   -!- PATHWAY: Lipid metabolism; fatty acid biosynthesis.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the short-chain dehydrogenases/reductases (SDR)
CC       family. {ECO:0000305}.
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DR   EMBL; AE017197; AAU04205.1; -; Genomic_DNA.
DR   RefSeq; WP_011191181.1; NC_006142.1.
DR   AlphaFoldDB; Q68VY7; -.
DR   SMR; Q68VY7; -.
DR   STRING; 257363.RT0748; -.
DR   EnsemblBacteria; AAU04205; AAU04205; RT0748.
DR   KEGG; rty:RT0748; -.
DR   eggNOG; COG1028; Bacteria.
DR   HOGENOM; CLU_010194_1_3_5; -.
DR   OMA; KMPERDY; -.
DR   OrthoDB; 1601931at2; -.
DR   UniPathway; UPA00094; -.
DR   Proteomes; UP000000604; Chromosome.
DR   GO; GO:0004316; F:3-oxoacyl-[acyl-carrier-protein] reductase (NADPH) activity; ISS:UniProtKB.
DR   GO; GO:0051287; F:NAD binding; IEA:InterPro.
DR   GO; GO:0050661; F:NADP binding; ISS:UniProtKB.
DR   GO; GO:0030497; P:fatty acid elongation; ISS:UniProtKB.
DR   InterPro; IPR011284; 3oxo_ACP_reduc.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   InterPro; IPR020904; Sc_DH/Rdtase_CS.
DR   InterPro; IPR002347; SDR_fam.
DR   PRINTS; PR00081; GDHRDH.
DR   PRINTS; PR00080; SDRFAMILY.
DR   SUPFAM; SSF51735; SSF51735; 1.
DR   TIGRFAMs; TIGR01830; 3oxo_ACP_reduc; 1.
DR   PROSITE; PS00061; ADH_SHORT; 1.
PE   3: Inferred from homology;
KW   Fatty acid biosynthesis; Fatty acid metabolism; Lipid biosynthesis;
KW   Lipid metabolism; NADP; Oxidoreductase.
FT   CHAIN           1..241
FT                   /note="3-oxoacyl-[acyl-carrier-protein] reductase FabG"
FT                   /id="PRO_0000286634"
FT   ACT_SITE        148
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10001"
FT   BINDING         13..16
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250"
FT   BINDING         38
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250"
FT   BINDING         57..58
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250"
FT   BINDING         83
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250"
FT   BINDING         135
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000250"
FT   BINDING         148..152
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250"
FT   BINDING         181
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   241 AA;  25892 MW;  315D2AF9C6543A7D CRC64;
     MIDFTGKTSL ITGASGGIGS AIARLLHKLG SKVIISGSNE KKLKLLGNTL KDNYIIEVCN
     LANKEECNNL ISKISNLDIL VCNAGITSDT LAIRMKDQDF DKVIDINLKA NFILNREAIK
     KMIQKRYGRI INISSIVGIA GNPGQANYCA SKAGLIGMTK SLSYEVATRG ITVNAVAPGF
     IKSDMTDKLN EKQREAIVQK IPLGTYGIPE DVAYAVAFLA SNHASYITGQ TLHVNGGMLM
     V