FABH_BURTA
ID FABH_BURTA Reviewed; 329 AA.
AC Q2SXU7;
DT 05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 24-JAN-2006, sequence version 1.
DT 03-AUG-2022, entry version 95.
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=BTH_I1717;
OS Burkholderia thailandensis (strain ATCC 700388 / DSM 13276 / CIP 106301 /
OS E264).
OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Burkholderia; pseudomallei group.
OX NCBI_TaxID=271848;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700388 / DSM 13276 / CIP 106301 / E264;
RX PubMed=16336651; DOI=10.1186/1471-2164-6-174;
RA Kim H.S., Schell M.A., Yu Y., Ulrich R.L., Sarria S.H., Nierman W.C.,
RA DeShazer D.;
RT "Bacterial genome adaptation to niches: divergence of the potential
RT virulence genes in three Burkholderia species of different survival
RT strategies.";
RL BMC Genomics 6:174-174(2005).
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; CP000086; ABC36895.1; -; Genomic_DNA.
DR RefSeq; WP_009889988.1; NZ_CM000438.1.
DR AlphaFoldDB; Q2SXU7; -.
DR SMR; Q2SXU7; -.
DR PRIDE; Q2SXU7; -.
DR EnsemblBacteria; ABC36895; ABC36895; BTH_I1717.
DR GeneID; 66547848; -.
DR KEGG; bte:BTH_I1717; -.
DR HOGENOM; CLU_039592_3_1_4; -.
DR OMA; WGSEGDK; -.
DR OrthoDB; 872193at2; -.
DR UniPathway; UPA00094; -.
DR Proteomes; UP000001930; Chromosome I.
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; -; 2.
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; Transferase.
FT CHAIN 1..329
FT /note="3-oxoacyl-[acyl-carrier-protein] synthase 3"
FT /id="PRO_1000070226"
FT REGION 257..261
FT /note="ACP-binding"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT ACT_SITE 123
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT ACT_SITE 256
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
FT ACT_SITE 286
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01815"
SQ SEQUENCE 329 AA; 34880 MW; 6649353B8A22A024 CRC64;
MAQSTLYSRV LGTGSYLPPD RVTNQELADR LAKDGIETSD EWIVARTGIH ARHFAAPDVT
TSDLAFVAAQ RAIEAADVDP QSIDLIIVAT STPDFVFPST ACLLQNKLGI KNGGAAFDVQ
AVCSGFAYAL AMADSFIRTG QHRTALIVGA ETFSRILDFK DRTTCVLFGD GAGAVVLSAS
EEPGILGSAL HADGSYSNIL CTPGNVNRGV IAGSAFLHMD GQAVFKLAVN VLEKVAVEAL
SKAALAPEQI DWLIPHQANI RIMTSTCRKL GLPQERMIVT VDEHGNTSAA SIPLALDVAV
RDGRIKRGQH VLIEGVGGGF TWGASVFRY
