FABH_CLOP1
ID FABH_CLOP1 Reviewed; 324 AA.
AC Q0TRH0;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 05-SEP-2006, sequence version 1.
DT 25-MAY-2022, entry version 94.
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=CPF_1324;
OS Clostridium perfringens (strain ATCC 13124 / DSM 756 / JCM 1290 / NCIMB
OS 6125 / NCTC 8237 / Type A).
OC Bacteria; Firmicutes; Clostridia; Eubacteriales; Clostridiaceae;
OC Clostridium.
OX NCBI_TaxID=195103;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 13124 / DSM 756 / JCM 1290 / NCIMB 6125 / NCTC 8237 / S 107 /
RC Type A;
RX PubMed=16825665; DOI=10.1101/gr.5238106;
RA Myers G.S.A., Rasko D.A., Cheung J.K., Ravel J., Seshadri R., DeBoy R.T.,
RA Ren Q., Varga J., Awad M.M., Brinkac L.M., Daugherty S.C., Haft D.H.,
RA Dodson R.J., Madupu R., Nelson W.C., Rosovitz M.J., Sullivan S.A.,
RA Khouri H., Dimitrov G.I., Watkins K.L., Mulligan S., Benton J., Radune D.,
RA Fisher D.J., Atkins H.S., Hiscox T., Jost B.H., Billington S.J.,
RA Songer J.G., McClane B.A., Titball R.W., Rood J.I., Melville S.B.,
RA Paulsen I.T.;
RT "Skewed genomic variability in strains of the toxigenic bacterial pathogen,
RT Clostridium perfringens.";
RL Genome Res. 16:1031-1040(2006).
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; CP000246; ABG83519.1; -; Genomic_DNA.
DR RefSeq; WP_011590666.1; NC_008261.1.
DR AlphaFoldDB; Q0TRH0; -.
DR SMR; Q0TRH0; -.
DR STRING; 195103.CPF_1324; -.
DR EnsemblBacteria; ABG83519; ABG83519; CPF_1324.
DR GeneID; 29571563; -.
DR KEGG; cpf:CPF_1324; -.
DR eggNOG; COG0332; Bacteria.
DR HOGENOM; CLU_039592_3_1_9; -.
DR OMA; WGSEGDK; -.
DR OrthoDB; 872193at2; -.
DR UniPathway; UPA00094; -.
DR Proteomes; UP000001823; 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; Transferase.
FT CHAIN 1..324
FT /note="3-oxoacyl-[acyl-carrier-protein] synthase 3"
FT /id="PRO_1000056348"
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 324 AA; 35327 MW; 7AB81871B8717C9F CRC64;
MKNAKMIGFG LYTPKNLVEN ERLQEFLETS DEWIRTRTGI ERRYISLDEN TSDLAVEASK
KALNQAGLSA EDIDLIILAT VTPDNFTPST ACIVQDKLGA KNAWAFDINA ACTGFIYALK
LGRSLIRSGE AKNALIIGAE TLSKALNWED RGSCVLFGDG AGATVLTSTE EDCGIKCVNV
KSDGSKGDSL VIQGLPLNSP FKDGREVSEN YINMNGREIF KFATKVMEES IVEILEKENI
KIEDIDAIIP HQANLRIIDY VVKRLGIPRE KFITNLQNYG NTSGASIPIA LCESINEGNL
KKGDNIIMVG FGGGLTWGAA LIKL
