ID   FADA_ECOL6              Reviewed;         387 AA.
AC   Q8FBI3;
DT   06-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   04-NOV-2026, entry version 126.
DE   RecName: Full=3-ketoacyl-CoA thiolase {ECO:0000255|HAMAP-Rule:MF_01620};
DE            EC=2.3.1.16 {ECO:0000255|HAMAP-Rule:MF_01620};
DE   AltName: Full=Acetyl-CoA acyltransferase {ECO:0000255|HAMAP-Rule:MF_01620};
DE   AltName: Full=Beta-ketothiolase {ECO:0000255|HAMAP-Rule:MF_01620};
DE   AltName: Full=Fatty acid oxidation complex subunit beta {ECO:0000255|HAMAP-Rule:MF_01620};
GN   Name=fadA {ECO:0000255|HAMAP-Rule:MF_01620}; OrderedLocusNames=c4792;
OS   Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
OC   Enterobacterales; Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=199310;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CFT073 / ATCC 700928 / UPEC;
RX   PubMed=12471157; DOI=10.1073/pnas.252529799;
RA   Welch R.A., Burland V., Plunkett G. III, Redford P., Roesch P., Rasko D.,
RA   Buckles E.L., Liou S.-R., Boutin A., Hackett J., Stroud D., Mayhew G.F.,
RA   Rose D.J., Zhou S., Schwartz D.C., Perna N.T., Mobley H.L.T.,
RA   Donnenberg M.S., Blattner F.R.;
RT   "Extensive mosaic structure revealed by the complete genome sequence of
RT   uropathogenic Escherichia coli.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:17020-17024(2002).
CC   -!- FUNCTION: Catalyzes the final step of fatty acid oxidation in which
CC       acetyl-CoA is released and the CoA ester of a fatty acid two carbons
CC       shorter is formed. Involved in the aerobic and anaerobic degradation of
CC       long-chain fatty acids (By similarity). {ECO:0000255|HAMAP-
CC       Rule:MF_01620}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=an acyl-CoA + acetyl-CoA = a 3-oxoacyl-CoA + CoA;
CC         Xref=Rhea:RHEA:21564, ChEBI:CHEBI:57287, ChEBI:CHEBI:57288,
CC         ChEBI:CHEBI:58342, ChEBI:CHEBI:90726; EC=2.3.1.16;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01620};
CC   -!- PATHWAY: Lipid metabolism; fatty acid beta-oxidation.
CC       {ECO:0000255|HAMAP-Rule:MF_01620}.
CC   -!- SUBUNIT: Heterotetramer of two alpha chains (FadB) and two beta chains
CC       (FadA). {ECO:0000255|HAMAP-Rule:MF_01620}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01620}.
CC   -!- SIMILARITY: Belongs to the thiolase-like superfamily. Thiolase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01620}.
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DR   EMBL; AE014075; AAN83225.1; -; Genomic_DNA.
DR   RefSeq; WP_000438745.1; NC_004431.1.
DR   AlphaFoldDB; Q8FBI3; -.
DR   SMR; Q8FBI3; -.
DR   STRING; 199310.c4792; -.
DR   KEGG; ecc:c4792; -.
DR   eggNOG; COG0183; Bacteria.
DR   HOGENOM; CLU_031026_2_3_6; -.
DR   OMA; AAEKIMC; -.
DR   BioCyc; ECOL199310:C4792-MONOMER; -.
DR   UniPathway; UPA00659; -.
DR   Proteomes; UP000001410; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0003988; F:acetyl-CoA C-acyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006635; P:fatty acid beta-oxidation; IEA:UniProtKB-UniRule.
DR   GO; GO:0010124; P:phenylacetate catabolic process; IEA:TreeGrafter.
DR   CDD; cd00751; thiolase; 1.
DR   FunFam; 3.40.47.10:FF:000010; Acetyl-CoA acetyltransferase (Thiolase); 1.
DR   Gene3D; 3.40.47.10; -; 2.
DR   HAMAP; MF_01620; FadA; 1.
DR   InterPro; IPR012805; FadA.
DR   InterPro; IPR050215; FADA-like.
DR   InterPro; IPR002155; Thiolase.
DR   InterPro; IPR016039; Thiolase-like.
DR   InterPro; IPR020615; Thiolase_acyl_enz_int_AS.
DR   InterPro; IPR020610; Thiolase_AS.
DR   InterPro; IPR020617; Thiolase_C.
DR   InterPro; IPR020613; Thiolase_CS.
DR   InterPro; IPR020616; Thiolase_N.
DR   NCBIfam; TIGR01930; AcCoA-C-Actrans; 1.
DR   NCBIfam; NF006510; fadA; 1.
DR   NCBIfam; TIGR02445; fadA; 1.
DR   PANTHER; PTHR43853:SF11; 3-KETOACYL-COA THIOLASE FADA; 1.
DR   PANTHER; PTHR43853; 3-KETOACYL-COA THIOLASE, PEROXISOMAL; 1.
DR   Pfam; PF02803; Thiolase_C; 1.
DR   Pfam; PF00108; Thiolase_N; 1.
DR   PIRSF; PIRSF000429; Ac-CoA_Ac_transf; 1.
DR   SUPFAM; SSF53901; Thiolase-like; 2.
DR   PROSITE; PS00098; THIOLASE_1; 1.
DR   PROSITE; PS00737; THIOLASE_2; 1.
DR   PROSITE; PS00099; THIOLASE_3; 1.
PE   3: Inferred from homology;
KW   Acyltransferase; Cytoplasm; Fatty acid metabolism; Lipid degradation;
KW   Lipid metabolism; Reference proteome; Transferase.
FT   CHAIN           1..387
FT                   /note="3-ketoacyl-CoA thiolase"
FT                   /id="PRO_0000206374"
FT   ACT_SITE        91
FT                   /note="Acyl-thioester intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01620"
FT   ACT_SITE        343
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01620"
FT   ACT_SITE        373
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01620"
SQ   SEQUENCE   387 AA;  40775 MW;  505E4A821C40C007 CRC64;
     MEQVVIVDAI RTPMGRSKGG AFRNVRAEDL SAHLMRSLLA RNPALEAAAL DDIYWGCVQQ
     TLEQGFNIAR NAALLAEVPH SVPAVTVNRL CGSSMQALHD AARMIMTGDA QACLVGGVEH
     MGHVPMSHGV DFHPGLSRNV AKAAGMMGLT AEMLARMHGI SREMQDAFAA RSHARAWAAT
     QSGAFKNEII PTGGHDADGV LKQFNYDEVI RPETTVEALA TLRPAFDPVS GTVTAGTSSA
     LSDGAAAMLV MSESRARDLG LKPRACVRSM AVVGCDPSIM GYGPVPASKL ALKKAGLSAS
     DIGVFEMNEA FAAQILPCIK DLGLMEQIDE KINLNGGAIA LGHPLGCSGA RISTTLLNLM
     ERKDVQFGLA TMCIGLGQGI ATVFERV
//