ID J9ZEN6_LEPFM Unreviewed; 341 AA.
AC J9ZEN6;
DT 28-NOV-2012, integrated into UniProtKB/TrEMBL.
DT 28-NOV-2012, sequence version 1.
DT 27-MAR-2024, entry version 50.
DE RecName: Full=Beta-ketoacyl-[acyl-carrier-protein] synthase III {ECO:0000256|ARBA:ARBA00012333, ECO:0000256|HAMAP-Rule:MF_01815};
DE Short=Beta-ketoacyl-ACP synthase III {ECO:0000256|HAMAP-Rule:MF_01815};
DE Short=KAS III {ECO:0000256|HAMAP-Rule:MF_01815};
DE EC=2.3.1.180 {ECO:0000256|ARBA:ARBA00012333, ECO:0000256|HAMAP-Rule:MF_01815};
DE AltName: Full=3-oxoacyl-[acyl-carrier-protein] synthase 3 {ECO:0000256|HAMAP-Rule:MF_01815};
DE AltName: Full=3-oxoacyl-[acyl-carrier-protein] synthase III {ECO:0000256|HAMAP-Rule:MF_01815};
GN Name=fabH {ECO:0000256|HAMAP-Rule:MF_01815};
GN OrderedLocusNames=LFML04_2133 {ECO:0000313|EMBL:AFS54328.1};
OS Leptospirillum ferriphilum (strain ML-04).
OC Bacteria; Nitrospirota; Nitrospiria; Nitrospirales; Nitrospiraceae;
OC Leptospirillum.
OX NCBI_TaxID=1048260 {ECO:0000313|EMBL:AFS54328.1, ECO:0000313|Proteomes:UP000006177};
RN [1] {ECO:0000313|EMBL:AFS54328.1, ECO:0000313|Proteomes:UP000006177}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ML-04 {ECO:0000313|EMBL:AFS54328.1,
RC ECO:0000313|Proteomes:UP000006177};
RX PubMed=22203551; DOI=10.1007/s12275-011-1099-9;
RA Mi S., Song J., Lin J., Che Y., Zheng H., Lin J.;
RT "Complete genome of Leptospirillum ferriphilum ML-04 provides insight into
RT its physiology and environmental adaptation.";
RL J. Microbiol. 49:890-901(2011).
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:0000256|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:0000256|ARBA:ARBA00043707};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:12081;
CC Evidence={ECO:0000256|ARBA:ARBA00043707};
CC -!- PATHWAY: Lipid metabolism; fatty acid biosynthesis.
CC {ECO:0000256|ARBA:ARBA00005194, ECO:0000256|HAMAP-Rule:MF_01815}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01815}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|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:0000256|HAMAP-
CC Rule:MF_01815}.
CC -!- SIMILARITY: Belongs to the thiolase-like superfamily. FabH family.
CC {ECO:0000256|ARBA:ARBA00008642, ECO:0000256|HAMAP-Rule:MF_01815}.
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DR EMBL; CP002919; AFS54328.1; -; Genomic_DNA.
DR RefSeq; WP_014961832.1; NC_018649.1.
DR AlphaFoldDB; J9ZEN6; -.
DR STRING; 1048260.LFML04_2133; -.
DR KEGG; lfi:LFML04_2133; -.
DR PATRIC; fig|1048260.3.peg.2328; -.
DR HOGENOM; CLU_039592_3_1_0; -.
DR UniPathway; UPA00094; -.
DR Proteomes; UP000006177; 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 CDD; cd00830; KAS_III; 1.
DR Gene3D; 3.40.47.10; -; 1.
DR HAMAP; MF_01815; FabH; 1.
DR InterPro; IPR013747; ACP_syn_III_C.
DR InterPro; IPR013751; ACP_syn_III_N.
DR InterPro; IPR004655; FabH.
DR InterPro; IPR016039; Thiolase-like.
DR NCBIfam; TIGR00747; fabH; 1.
DR PANTHER; PTHR43091; 3-OXOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE; 1.
DR PANTHER; PTHR43091:SF1; 3-OXOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE III, CHLOROPLASTIC; 1.
DR Pfam; PF08545; ACP_syn_III; 1.
DR Pfam; PF08541; ACP_syn_III_C; 1.
DR SUPFAM; SSF53901; Thiolase-like; 1.
PE 3: Inferred from homology;
KW Acyltransferase {ECO:0000256|HAMAP-Rule:MF_01815};
KW Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01815};
KW Fatty acid biosynthesis {ECO:0000256|ARBA:ARBA00023160, ECO:0000256|HAMAP-
KW Rule:MF_01815};
KW Fatty acid metabolism {ECO:0000256|ARBA:ARBA00022832, ECO:0000256|HAMAP-
KW Rule:MF_01815};
KW Lipid biosynthesis {ECO:0000256|ARBA:ARBA00022516, ECO:0000256|HAMAP-
KW Rule:MF_01815};
KW Lipid metabolism {ECO:0000256|ARBA:ARBA00023098, ECO:0000256|HAMAP-
KW Rule:MF_01815}; Multifunctional enzyme {ECO:0000256|HAMAP-Rule:MF_01815};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01815}.
FT DOMAIN 112..192
FT /note="Beta-ketoacyl-[acyl-carrier-protein] synthase III N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08545"
FT DOMAIN 244..333
FT /note="Beta-ketoacyl-[acyl-carrier-protein] synthase III C-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08541"
FT REGION 261..265
FT /note="ACP-binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 118
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 260
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 290
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
SQ SEQUENCE 341 AA; 36431 MW; A6413ABB6BEEC216 CRC64;
MTPTMLNRSI ILGTGSFAPA NVLTNEDISR KVETSDLWIR ERTGIRERRI ASSGESTSDL
ALEAGRNALR NAALSPADLD GIIVATATPD LTFPSTACLV QARLGIPGTF AFDVNAVCSG
FMYALKIADS MIRSGQCETL LVIGAEVMSR FVDWSDRSTC ILFGDGAGAV VLGKSGSPQT
GGVGTVTLHA DGRYWDLIHV PGGGSRSPVE TEKPPGNACT IRMKGSETFR MAVRSLEESV
REVLKEEGIG VNELDWVVPH QANIRILEAL SERLGIPLGH FVVNIDRYGN TSAASIPMAL
DEAVQDKRIQ PGHRILLTAF GSGVTWGSGL VHWTQKAGGD R
//
