ID C4ZKT2_THASP Unreviewed; 321 AA.
AC C4ZKT2;
DT 28-JUL-2009, integrated into UniProtKB/TrEMBL.
DT 28-JUL-2009, sequence version 1.
DT 27-MAR-2024, entry version 84.
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=Tmz1t_2328 {ECO:0000313|EMBL:ACK55067.1};
OS Thauera aminoaromatica.
OC Bacteria; Pseudomonadota; Betaproteobacteria; Rhodocyclales; Zoogloeaceae;
OC Thauera.
OX NCBI_TaxID=164330 {ECO:0000313|EMBL:ACK55067.1, ECO:0000313|Proteomes:UP000002186};
RN [1] {ECO:0000313|Proteomes:UP000002186}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MZ1T {ECO:0000313|Proteomes:UP000002186};
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Sims D., Brettin T., Detter J.C., Han C.,
RA Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Sayler G.S.;
RT "Complete sequence of chromosome of Thauera sp. MZ1T.";
RL Submitted (MAY-2009) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:ACK55067.1, ECO:0000313|Proteomes:UP000002186}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MZ1T {ECO:0000313|EMBL:ACK55067.1,
RC ECO:0000313|Proteomes:UP000002186};
RX PubMed=23407619; DOI=10.4056/sigs.2696029;
RA Jiang K., Sanseverino J., Chauhan A., Lucas S., Copeland A., Lapidus A.,
RA Del Rio T.G., Dalin E., Tice H., Bruce D., Goodwin L., Pitluck S., Sims D.,
RA Brettin T., Detter J.C., Han C., Chang Y.J., Larimer F., Land M.,
RA Hauser L., Kyrpides N.C., Mikhailova N., Moser S., Jegier P., Close D.,
RA Debruyn J.M., Wang Y., Layton A.C., Allen M.S., Sayler G.S.;
RT "Complete genome sequence of Thauera aminoaromatica strain MZ1T.";
RL Stand. Genomic Sci. 6:325-335(2012).
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; CP001281; ACK55067.1; -; Genomic_DNA.
DR RefSeq; WP_004302731.1; NC_011662.2.
DR AlphaFoldDB; C4ZKT2; -.
DR STRING; 85643.Tmz1t_2328; -.
DR KEGG; tmz:Tmz1t_2328; -.
DR eggNOG; COG0332; Bacteria.
DR HOGENOM; CLU_039592_3_1_4; -.
DR OrthoDB; 9815506at2; -.
DR UniPathway; UPA00094; -.
DR Proteomes; UP000002186; 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 ECO:0000313|EMBL:ACK55067.1}; 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 Reference proteome {ECO:0000313|Proteomes:UP000002186};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01815}.
FT DOMAIN 109..186
FT /note="Beta-ketoacyl-[acyl-carrier-protein] synthase III N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08545"
FT DOMAIN 232..320
FT /note="Beta-ketoacyl-[acyl-carrier-protein] synthase III C-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08541"
FT REGION 249..253
FT /note="ACP-binding"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 115
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 248
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
FT ACT_SITE 278
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01815"
SQ SEQUENCE 321 AA; 33516 MW; E4FD4DEE13A50121 CRC64;
MIYARIAGTG SYLPGEPVSN DDLVKRGIDT SDEWIVSRSG IRSRHLAAAD TGASDLARVA
AERAIEAAGC EAEDIDLIIV ATSTPDYIFP STAALVQSKL GIRNGGAAFD VQAVCSGFIY
ALSVAEKFIR SGSNKRALVI GAEVFSRILD WSDRGTCVLF GDGAGAVVLE ASERPGILAS
ALHADGSHHP ILCVPGAVAS GQVIGDPFLR MDGQAVFKFA VKVLGDVANE VLDAAGVQAS
SVDWLIPHQA NIRIIQATAK RLGVPMERVV TTLDHHGNTS AASIPLALDE AVRAGRLRPG
HRIVVEGVGG GFTWGAALID F
//
