ID   FADB_PSEFS              Reviewed;         715 AA.
AC   C3K613;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   16-JUN-2009, sequence version 1.
DT   27-MAR-2024, entry version 106.
DE   RecName: Full=Fatty acid oxidation complex subunit alpha {ECO:0000255|HAMAP-Rule:MF_01621};
DE   Includes:
DE     RecName: Full=Enoyl-CoA hydratase/Delta(3)-cis-Delta(2)-trans-enoyl-CoA isomerase/3-hydroxybutyryl-CoA epimerase {ECO:0000255|HAMAP-Rule:MF_01621};
DE              EC=4.2.1.17 {ECO:0000255|HAMAP-Rule:MF_01621};
DE              EC=5.1.2.3 {ECO:0000255|HAMAP-Rule:MF_01621};
DE              EC=5.3.3.8 {ECO:0000255|HAMAP-Rule:MF_01621};
DE   Includes:
DE     RecName: Full=3-hydroxyacyl-CoA dehydrogenase {ECO:0000255|HAMAP-Rule:MF_01621};
DE              EC=1.1.1.35 {ECO:0000255|HAMAP-Rule:MF_01621};
GN   Name=fadB {ECO:0000255|HAMAP-Rule:MF_01621};
GN   OrderedLocusNames=PFLU_1553;
OS   Pseudomonas fluorescens (strain SBW25).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Pseudomonadales;
OC   Pseudomonadaceae; Pseudomonas.
OX   NCBI_TaxID=216595;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SBW25;
RX   PubMed=19432983; DOI=10.1186/gb-2009-10-5-r51;
RA   Silby M.W., Cerdeno-Tarraga A.M., Vernikos G.S., Giddens S.R.,
RA   Jackson R.W., Preston G.M., Zhang X.-X., Moon C.D., Gehrig S.M.,
RA   Godfrey S.A.C., Knight C.G., Malone J.G., Robinson Z., Spiers A.J.,
RA   Harris S., Challis G.L., Yaxley A.M., Harris D., Seeger K., Murphy L.,
RA   Rutter S., Squares R., Quail M.A., Saunders E., Mavromatis K.,
RA   Brettin T.S., Bentley S.D., Hothersall J., Stephens E., Thomas C.M.,
RA   Parkhill J., Levy S.B., Rainey P.B., Thomson N.R.;
RT   "Genomic and genetic analyses of diversity and plant interactions of
RT   Pseudomonas fluorescens.";
RL   Genome Biol. 10:R51.1-R51.16(2009).
CC   -!- FUNCTION: Involved in the aerobic and anaerobic degradation of long-
CC       chain fatty acids via beta-oxidation cycle. Catalyzes the formation of
CC       3-oxoacyl-CoA from enoyl-CoA via L-3-hydroxyacyl-CoA. It can also use
CC       D-3-hydroxyacyl-CoA and cis-3-enoyl-CoA as substrate.
CC       {ECO:0000255|HAMAP-Rule:MF_01621}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a (3S)-3-hydroxyacyl-CoA + NAD(+) = a 3-oxoacyl-CoA + H(+) +
CC         NADH; Xref=Rhea:RHEA:22432, ChEBI:CHEBI:15378, ChEBI:CHEBI:57318,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:90726; EC=1.1.1.35;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01621};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a (3S)-3-hydroxyacyl-CoA = a (2E)-enoyl-CoA + H2O;
CC         Xref=Rhea:RHEA:16105, ChEBI:CHEBI:15377, ChEBI:CHEBI:57318,
CC         ChEBI:CHEBI:58856; EC=4.2.1.17; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01621};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a 4-saturated-(3S)-3-hydroxyacyl-CoA = a (3E)-enoyl-CoA + H2O;
CC         Xref=Rhea:RHEA:20724, ChEBI:CHEBI:15377, ChEBI:CHEBI:58521,
CC         ChEBI:CHEBI:137480; EC=4.2.1.17; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01621};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=(3S)-3-hydroxybutanoyl-CoA = (3R)-3-hydroxybutanoyl-CoA;
CC         Xref=Rhea:RHEA:21760, ChEBI:CHEBI:57315, ChEBI:CHEBI:57316;
CC         EC=5.1.2.3; Evidence={ECO:0000255|HAMAP-Rule:MF_01621};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a (3Z)-enoyl-CoA = a 4-saturated (2E)-enoyl-CoA;
CC         Xref=Rhea:RHEA:45900, ChEBI:CHEBI:85097, ChEBI:CHEBI:85489;
CC         EC=5.3.3.8; Evidence={ECO:0000255|HAMAP-Rule:MF_01621};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a (3E)-enoyl-CoA = a 4-saturated (2E)-enoyl-CoA;
CC         Xref=Rhea:RHEA:45228, ChEBI:CHEBI:58521, ChEBI:CHEBI:85097;
CC         EC=5.3.3.8; Evidence={ECO:0000255|HAMAP-Rule:MF_01621};
CC   -!- PATHWAY: Lipid metabolism; fatty acid beta-oxidation.
CC       {ECO:0000255|HAMAP-Rule:MF_01621}.
CC   -!- SUBUNIT: Heterotetramer of two alpha chains (FadB) and two beta chains
CC       (FadA). {ECO:0000255|HAMAP-Rule:MF_01621}.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the enoyl-CoA
CC       hydratase/isomerase family. {ECO:0000255|HAMAP-Rule:MF_01621}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the 3-hydroxyacyl-CoA
CC       dehydrogenase family. {ECO:0000255|HAMAP-Rule:MF_01621}.
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DR   EMBL; AM181176; CAY47802.1; -; Genomic_DNA.
DR   RefSeq; WP_012722844.1; NC_012660.1.
DR   AlphaFoldDB; C3K613; -.
DR   SMR; C3K613; -.
DR   STRING; 294.SRM1_03790; -.
DR   eggNOG; COG1024; Bacteria.
DR   eggNOG; COG1250; Bacteria.
DR   HOGENOM; CLU_009834_16_3_6; -.
DR   OrthoDB; 5389341at2; -.
DR   UniPathway; UPA00659; -.
DR   Proteomes; UP000002332; Chromosome.
DR   GO; GO:0036125; C:fatty acid beta-oxidation multienzyme complex; IEA:InterPro.
DR   GO; GO:0003857; F:3-hydroxyacyl-CoA dehydrogenase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008692; F:3-hydroxybutyryl-CoA epimerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0004165; F:delta(3)-delta(2)-enoyl-CoA isomerase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0004300; F:enoyl-CoA hydratase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0070403; F:NAD+ binding; IEA:InterPro.
DR   GO; GO:0006635; P:fatty acid beta-oxidation; IEA:UniProtKB-UniPathway.
DR   CDD; cd06558; crotonase-like; 1.
DR   Gene3D; 1.10.1040.50; -; 1.
DR   Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
DR   HAMAP; MF_01621; FadB; 1.
DR   InterPro; IPR006180; 3-OHacyl-CoA_DH_CS.
DR   InterPro; IPR006176; 3-OHacyl-CoA_DH_NAD-bd.
DR   InterPro; IPR006108; 3HC_DH_C.
DR   InterPro; IPR008927; 6-PGluconate_DH-like_C_sf.
DR   InterPro; IPR029045; ClpP/crotonase-like_dom_sf.
DR   InterPro; IPR018376; Enoyl-CoA_hyd/isom_CS.
DR   InterPro; IPR001753; Enoyl-CoA_hydra/iso.
DR   InterPro; IPR012799; FadB.
DR   InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR   NCBIfam; TIGR02437; FadB; 1.
DR   PANTHER; PTHR43612:SF8; FATTY ACID OXIDATION COMPLEX SUBUNIT ALPHA; 1.
DR   PANTHER; PTHR43612; TRIFUNCTIONAL ENZYME SUBUNIT ALPHA; 1.
DR   Pfam; PF00725; 3HCDH; 1.
DR   Pfam; PF02737; 3HCDH_N; 1.
DR   Pfam; PF00378; ECH_1; 1.
DR   SUPFAM; SSF48179; 6-phosphogluconate dehydrogenase C-terminal domain-like; 2.
DR   SUPFAM; SSF52096; ClpP/crotonase; 1.
DR   SUPFAM; SSF51735; NAD(P)-binding Rossmann-fold domains; 1.
DR   PROSITE; PS00067; 3HCDH; 1.
DR   PROSITE; PS00166; ENOYL_COA_HYDRATASE; 1.
PE   3: Inferred from homology;
KW   Fatty acid metabolism; Isomerase; Lipid degradation; Lipid metabolism;
KW   Lyase; Multifunctional enzyme; NAD; Oxidoreductase; Reference proteome.
FT   CHAIN           1..715
FT                   /note="Fatty acid oxidation complex subunit alpha"
FT                   /id="PRO_1000215739"
FT   REGION          1..190
FT                   /note="Enoyl-CoA hydratase/isomerase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   REGION          312..715
FT                   /note="3-hydroxyacyl-CoA dehydrogenase"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   ACT_SITE        451
FT                   /note="For 3-hydroxyacyl-CoA dehydrogenase activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         297
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         325
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         344
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         401..403
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         408
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         430
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         454
FT                   /ligand="NAD(+)"
FT                   /ligand_id="ChEBI:CHEBI:57540"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         501
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   BINDING         660
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   SITE            120
FT                   /note="Important for catalytic activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
FT   SITE            140
FT                   /note="Important for catalytic activity"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01621"
SQ   SEQUENCE   715 AA;  76987 MW;  30B70D8C0529E820 CRC64;
     MIYEGKAITV KALESGIVEL KFDLKGESVN KFNRLTLNEL RQAVDTIKAD ASIKGVIVSS
     GKDVFIVGAD ITEFVDNFKL PDAELVAGNL EANKIFSDFE DLNVPTVAAI NGIALGGGLE
     MCLAADFRVM SATAKIGLPE VKLGIYPGFG GTVRLPRLIG ADNAIEWIAA GKENRAEDAL
     KVGAVDAVVA PDKLAEAALN LIKGAISGEF DYKAKRQPKL EKLKLNAIEQ MMSFETAKGF
     VAGQAGPNYP APVEAIKTIQ KAANFGRDKA LEVEAAGFVK LAKTSAAQSL IGLFLNDQEL
     KKKAKAYDEI ARDVKQAAVL GAGIMGGGIA YQSASKGTPI LMKDINEHGI EQGLAEAAKL
     LVGRVDKGRM TAAKMAEVLN GIRPTLSYGD FGHVDLVVEA VVENPKVKQA VLAEVEAQVK
     DDTILASNTS TISISLLAKA LKRPENFVGM HFFNPVHMMP LVEVIRGEKS SELAVATTVA
     YAKKMGKNPI VVNDCPGFLV NRVLFPYFGG FAKLVSAGVD FVRIDKVMEK FGWPMGPAYL
     MDVVGIDTGH HGRDVMAEGF PDRMKDDRRS AIDALYEAKR LGQKNGKGFY AYEADKKGKQ
     KKVADPSVHE VLAPVIYEQR EVSDEDIINW MMIALCLETV RCLEDGIVET AAEADMGLVY
     GIGFPPFRGG ALRYIDSIGV AEFVALADKY ADLGPLYHPT AKLREMAKNG QSFFG
//