ID D3IEA0_9BACT Unreviewed; 337 AA.
AC D3IEA0;
DT 23-MAR-2010, integrated into UniProtKB/TrEMBL.
DT 23-MAR-2010, sequence version 1.
DT 27-MAR-2024, entry version 62.
DE RecName: Full=Beta-ketoacyl-[acyl-carrier-protein] synthase III {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|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 ORFNames=HMPREF0669_01754 {ECO:0000313|EMBL:EFC70227.1};
OS Prevotella sp. oral taxon 299 str. F0039.
OC Bacteria; Bacteroidota; Bacteroidia; Bacteroidales; Prevotellaceae;
OC Prevotella.
OX NCBI_TaxID=575614 {ECO:0000313|EMBL:EFC70227.1, ECO:0000313|Proteomes:UP000015929};
RN [1] {ECO:0000313|EMBL:EFC70227.1, ECO:0000313|Proteomes:UP000015929}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=F0039 {ECO:0000313|EMBL:EFC70227.1,
RC ECO:0000313|Proteomes:UP000015929};
RG The Broad Institute Genome Sequencing Platform;
RA Ward D., Feldgarden M., Earl A., Young S.K., Zeng Q., Koehrsen M.,
RA Alvarado L., Berlin A., Bochicchio J., Borenstein D., Chapman S.B.,
RA Chen Z., Engels R., Freedman E., Gellesch M., Goldberg J., Griggs A.,
RA Gujja S., Heilman E., Heiman D., Hepburn T., Howarth C., Jen D., Larson L.,
RA Lewis B., Mehta T., Park D., Pearson M., Roberts A., Saif S., Shea T.,
RA Shenoy N., Sisk P., Stolte C., Sykes S., Thomson T., Walk T., White J.,
RA Yandava C., Izard J., Baranova O.V., Blanton J.M., Tanner A.C.,
RA Dewhirst F.E., Haas B., Nusbaum C., Birren B.;
RL Submitted (NOV-2009) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:EFC70227.1, ECO:0000313|Proteomes:UP000015929}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=F0039 {ECO:0000313|EMBL:EFC70227.1,
RC ECO:0000313|Proteomes:UP000015929};
RG The Broad Institute Genome Sequencing Platform;
RG The Broad Institute Genome Sequencing Center for Infectious Disease;
RA Earl A., Ward D., Feldgarden M., Gevers D., Izard J., Baranova O.V.,
RA Blanton J.M., Tanner A.C., Dewhirst F.E., Walker B., Young S.K., Zeng Q.,
RA Gargeya S., Fitzgerald M., Haas B., Abouelleil A., Alvarado L.,
RA Arachchi H.M., Berlin A.M., Chapman S.B., Goldberg J., Griggs A., Gujja S.,
RA Hansen M., Howarth C., Imamovic A., Larimer J., McCowan C., Montmayeur A.,
RA Murphy C., Neiman D., Pearson M., Priest M., Roberts A., Saif S., Shea T.,
RA Sisk P., Sykes S., Wortman J., Nusbaum C., Birren B.;
RT "The Genome Sequence of Prevotella sp. Oral Taxon 299 strain F0039.";
RL Submitted (JUN-2012) 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: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|HAMAP-Rule:MF_01815};
CC -!- PATHWAY: Lipid metabolism; fatty acid biosynthesis. {ECO:0000256|HAMAP-
CC 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}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01815}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP003666; EFC70227.1; -; Genomic_DNA.
DR RefSeq; WP_009228926.1; NC_022124.1.
DR AlphaFoldDB; D3IEA0; -.
DR STRING; 575614.HMPREF0669_01754; -.
DR KEGG; pro:HMPREF0669_01754; -.
DR HOGENOM; CLU_039592_3_1_10; -.
DR OrthoDB; 9815506at2; -.
DR UniPathway; UPA00094; -.
DR Proteomes; UP000015929; 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; PTHR34069; 3-OXOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE 3; 1.
DR PANTHER; PTHR34069:SF2; BETA-KETOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE III; 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|ARBA:ARBA00022490, 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 Reference proteome {ECO:0000313|Proteomes:UP000015929};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01815}.
FT DOMAIN 110..188
FT /note="Beta-ketoacyl-[acyl-carrier-protein] synthase III N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08545"
FT DOMAIN 240..327
FT /note="Beta-ketoacyl-[acyl-carrier-protein] synthase III C-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08541"
FT ACT_SITE 116
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 256
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 286
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
SQ SEQUENCE 337 AA; 36876 MW; 7B04645242FF2E24 CRC64;
MGKINAVITG VGGYVPDYIL TNEELSRMVD TSDEWIMARV GIKERRILKE EGLGTSYLAR
KAAKQLLKKT GTDPQEIDAL IVATTTPDYK FPSTASIVLG KLGLTNAFAY DLEAACCGFM
YALSQACTMV ESGRCKKVIV IGADKMSSIV DYTDRQTCVL FGDGAAGVLV EASEEDYGMQ
DFYFRTDGKG LPFLHLKAGG SVCPTSKFTV DHHLHYLFQD GRPVFRCAVT DMSNDVMEVL
KRNNLTADDI SWVVPHEANL RIIEAVAKRA ELSLDKVAVN IEHYGNTSAA TIPLALWDFE
SKLKKGDNII FTAFGAGFVH GASYFKWAYD GNAVASK
//
