ID   FABH_NEIG1              Reviewed;         320 AA.
AC   Q5F4X5;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   25-MAY-2022, entry version 97.
DE   RecName: Full=3-oxoacyl-[acyl-carrier-protein] synthase 3 {ECO:0000255|HAMAP-Rule:MF_01815};
DE            EC=2.3.1.180 {ECO:0000255|HAMAP-Rule:MF_01815};
DE   AltName: Full=3-oxoacyl-[acyl-carrier-protein] synthase III {ECO:0000255|HAMAP-Rule:MF_01815};
DE   AltName: Full=Beta-ketoacyl-ACP synthase III {ECO:0000255|HAMAP-Rule:MF_01815};
DE            Short=KAS III {ECO:0000255|HAMAP-Rule:MF_01815};
GN   Name=fabH {ECO:0000255|HAMAP-Rule:MF_01815}; OrderedLocusNames=NGO2168;
OS   Neisseria gonorrhoeae (strain ATCC 700825 / FA 1090).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Neisseriales; Neisseriaceae;
OC   Neisseria.
OX   NCBI_TaxID=242231;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700825 / FA 1090;
RA   Lewis L.A., Gillaspy A.F., McLaughlin R.E., Gipson M., Ducey T.F.,
RA   Ownbey T., Hartman K., Nydick C., Carson M.B., Vaughn J., Thomson C.,
RA   Song L., Lin S., Yuan X., Najar F., Zhan M., Ren Q., Zhu H., Qi S.,
RA   Kenton S.M., Lai H., White J.D., Clifton S., Roe B.A., Dyer D.W.;
RT   "The complete genome sequence of Neisseria gonorrhoeae.";
RL   Submitted (MAR-2003) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the condensation reaction of fatty acid synthesis
CC       by the addition to an acyl acceptor of two carbons from malonyl-ACP.
CC       Catalyzes the first condensation reaction which initiates fatty acid
CC       synthesis and may therefore play a role in governing the total rate of
CC       fatty acid production. Possesses both acetoacetyl-ACP synthase and
CC       acetyl transacylase activities. Its substrate specificity determines
CC       the biosynthesis of branched-chain and/or straight-chain of fatty
CC       acids. {ECO:0000255|HAMAP-Rule:MF_01815}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=acetyl-CoA + H(+) + malonyl-[ACP] = 3-oxobutanoyl-[ACP] + CO2
CC         + CoA; Xref=Rhea:RHEA:12080, Rhea:RHEA-COMP:9623, Rhea:RHEA-
CC         COMP:9625, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:57287,
CC         ChEBI:CHEBI:57288, ChEBI:CHEBI:78449, ChEBI:CHEBI:78450;
CC         EC=2.3.1.180; Evidence={ECO:0000255|HAMAP-Rule:MF_01815};
CC   -!- PATHWAY: Lipid metabolism; fatty acid biosynthesis. {ECO:0000255|HAMAP-
CC       Rule:MF_01815}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01815}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01815}.
CC   -!- DOMAIN: The last Arg residue of the ACP-binding site is essential for
CC       the weak association between ACP/AcpP and FabH. {ECO:0000255|HAMAP-
CC       Rule:MF_01815}.
CC   -!- SIMILARITY: Belongs to the thiolase-like superfamily. FabH family.
CC       {ECO:0000255|HAMAP-Rule:MF_01815}.
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DR   EMBL; AE004969; AAW90762.1; -; Genomic_DNA.
DR   RefSeq; WP_003687179.1; NC_002946.2.
DR   RefSeq; YP_209174.1; NC_002946.2.
DR   AlphaFoldDB; Q5F4X5; -.
DR   SMR; Q5F4X5; -.
DR   STRING; 242231.NGO_2168; -.
DR   EnsemblBacteria; AAW90762; AAW90762; NGO_2168.
DR   GeneID; 66754496; -.
DR   KEGG; ngo:NGO_2168; -.
DR   PATRIC; fig|242231.10.peg.2618; -.
DR   HOGENOM; CLU_039592_4_1_4; -.
DR   OMA; WGSEGDK; -.
DR   UniPathway; UPA00094; -.
DR   Proteomes; UP000000535; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004315; F:3-oxoacyl-[acyl-carrier-protein] synthase activity; IEA:InterPro.
DR   GO; GO:0033818; F:beta-ketoacyl-acyl-carrier-protein synthase III activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006633; P:fatty acid biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.47.10; -; 1.
DR   HAMAP; MF_01815; FabH; 1.
DR   InterPro; IPR013751; ACP_syn_III.
DR   InterPro; IPR013747; ACP_syn_III_C.
DR   InterPro; IPR004655; FabH_synth.
DR   InterPro; IPR016039; Thiolase-like.
DR   Pfam; PF08545; ACP_syn_III; 1.
DR   Pfam; PF08541; ACP_syn_III_C; 1.
DR   SUPFAM; SSF53901; SSF53901; 1.
DR   TIGRFAMs; TIGR00747; fabH; 1.
PE   3: Inferred from homology;
KW   Acyltransferase; Cytoplasm; Fatty acid biosynthesis; Fatty acid metabolism;
KW   Lipid biosynthesis; Lipid metabolism; Multifunctional enzyme;
KW   Reference proteome; Transferase.
FT   CHAIN           1..320
FT                   /note="3-oxoacyl-[acyl-carrier-protein] synthase 3"
FT                   /id="PRO_1000056381"
FT   REGION          248..252
FT                   /note="ACP-binding"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT   ACT_SITE        114
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT   ACT_SITE        247
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT   ACT_SITE        277
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
SQ   SEQUENCE   320 AA;  34002 MW;  000E4939D5ECD119 CRC64;
     MQYAKISGTG SYLPANRVSN DDLAQKVDTS DEWITARTGI KFRHIAAENE KTSDLAAEAA
     RRALADAKLN INDIDLIIVA TATPDMQFPS TATIVQQKLG ITNGCPAFDV QAVCAGFMYA
     LTTANAYIKS GMAKNALVIG AETFSRIVDW NDRTTCVLFG DGAGAVVLSA SDKPGIIHSK
     LKADGNYLKL LNVPGQIACG KVSGSPYISM DGPGVFKFAV KMLSKIADDV IEEAGYTAEQ
     IDWIVPHQAN RRIIESTAKH LGLSMDKVVL TVQDHGNTSA ASIPLALDAG IRSGQIKRGQ
     NLLLEGIGGG FAWGAVLLQY