FABH_CLOBH
ID FABH_CLOBH Reviewed; 326 AA.
AC A5I7X8; A7G958;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 26-JUN-2007, sequence version 1.
DT 03-AUG-2022, entry version 80.
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};
GN OrderedLocusNames=CBO3604, CLC_3582;
OS Clostridium botulinum (strain Hall / ATCC 3502 / NCTC 13319 / Type A).
OC Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC Clostridium.
OX NCBI_TaxID=441771;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Hall / ATCC 3502 / NCTC 13319 / Type A;
RX PubMed=17519437; DOI=10.1101/gr.6282807;
RA Sebaihia M., Peck M.W., Minton N.P., Thomson N.R., Holden M.T.G.,
RA Mitchell W.J., Carter A.T., Bentley S.D., Mason D.R., Crossman L.,
RA Paul C.J., Ivens A., Wells-Bennik M.H.J., Davis I.J., Cerdeno-Tarraga A.M.,
RA Churcher C., Quail M.A., Chillingworth T., Feltwell T., Fraser A.,
RA Goodhead I., Hance Z., Jagels K., Larke N., Maddison M., Moule S.,
RA Mungall K., Norbertczak H., Rabbinowitsch E., Sanders M., Simmonds M.,
RA White B., Whithead S., Parkhill J.;
RT "Genome sequence of a proteolytic (Group I) Clostridium botulinum strain
RT Hall A and comparative analysis of the clostridial genomes.";
RL Genome Res. 17:1082-1092(2007).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Hall / ATCC 3502 / NCTC 13319 / Type A;
RX PubMed=18060065; DOI=10.1371/journal.pone.0001271;
RA Smith T.J., Hill K.K., Foley B.T., Detter J.C., Munk A.C., Bruce D.C.,
RA Doggett N.A., Smith L.A., Marks J.D., Xie G., Brettin T.S.;
RT "Analysis of the neurotoxin complex genes in Clostridium botulinum A1-A4
RT and B1 strains: BoNT/A3, /Ba4 and /B1 clusters are located within
RT plasmids.";
RL PLoS ONE 2:E1271-E1271(2007).
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; CP000727; ABS39030.1; -; Genomic_DNA.
DR EMBL; AM412317; CAL85163.1; -; Genomic_DNA.
DR RefSeq; WP_012048430.1; NC_009698.1.
DR RefSeq; YP_001256083.1; NC_009495.1.
DR RefSeq; YP_001389323.1; NC_009698.1.
DR AlphaFoldDB; A5I7X8; -.
DR SMR; A5I7X8; -.
DR GeneID; 5187781; -.
DR KEGG; cbh:CLC_3582; -.
DR KEGG; cbo:CBO3604; -.
DR PATRIC; fig|413999.7.peg.3581; -.
DR HOGENOM; CLU_039592_3_1_9; -.
DR OMA; QFVFKNA; -.
DR UniPathway; UPA00094; -.
DR PRO; PR:A5I7X8; -.
DR Proteomes; UP000001986; 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..326
FT /note="3-oxoacyl-[acyl-carrier-protein] synthase 3"
FT /id="PRO_1000056344"
FT REGION 252..256
FT /note="ACP-binding"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT ACT_SITE 112
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT ACT_SITE 251
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT ACT_SITE 281
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
SQ SEQUENCE 326 AA; 35813 MW; 7BE182C66B07F344 CRC64;
MSNISVIGTG SYVPNNIITN DFLSTIVDTS DEWIRTRTGI LERRISKGEN TIYMATESAK
EAIKNANIEA NDLDLIIVAT LTPDNFMPST ACSVQKEIGA MNALCFDISA ACSGFIYGLE
IACSMLKNSF RNKALIIGAE NLSKIVDWED RNTCVLFGDG AGSAILSKTK EEGILEFHSG
SNGLKGEHLT CGVLKANNTP NKNDSLEKNN FIKMNGKEIF RFAVGAMNET IYNIQEKTKW
DLNEVKYIIS HQANSRIIEY TAKKLNTEKD KFYMNLDKYG NTSAASIPIA LDEMNKRGLL
NKQDKIILVG FGGGLTFGGV AIVWSI
