ID O67612_AQUAE Unreviewed; 415 AA.
AC O67612;
DT 01-AUG-1998, integrated into UniProtKB/TrEMBL.
DT 01-AUG-1998, sequence version 1.
DT 27-MAR-2024, entry version 140.
DE RecName: Full=3-oxoacyl-[acyl-carrier-protein] synthase 2 {ECO:0000256|ARBA:ARBA00014657, ECO:0000256|PIRNR:PIRNR000447};
DE EC=2.3.1.179 {ECO:0000256|ARBA:ARBA00012356, ECO:0000256|PIRNR:PIRNR000447};
GN Name=fabF {ECO:0000313|EMBL:AAC07574.1};
GN OrderedLocusNames=aq_1717 {ECO:0000313|EMBL:AAC07574.1};
OS Aquifex aeolicus (strain VF5).
OC Bacteria; Aquificota; Aquificae; Aquificales; Aquificaceae; Aquifex.
OX NCBI_TaxID=224324 {ECO:0000313|EMBL:AAC07574.1, ECO:0000313|Proteomes:UP000000798};
RN [1] {ECO:0000313|EMBL:AAC07574.1, ECO:0000313|Proteomes:UP000000798}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=VF5 {ECO:0000313|EMBL:AAC07574.1,
RC ECO:0000313|Proteomes:UP000000798};
RX PubMed=9537320; DOI=10.1038/32831;
RA Deckert G., Warren P.V., Gaasterland T., Young W.G., Lenox A.L.,
RA Graham D.E., Overbeek R., Snead M.A., Keller M., Aujay M., Huber R.,
RA Feldman R.A., Short J.M., Olson G.J., Swanson R.V.;
RT "The complete genome of the hyperthermophilic bacterium Aquifex aeolicus.";
RL Nature 392:353-358(1998).
CC -!- FUNCTION: Involved in the type II fatty acid elongation cycle.
CC Catalyzes the elongation of a wide range of acyl-ACP by the addition of
CC two carbons from malonyl-ACP to an acyl acceptor. Can efficiently
CC catalyze the conversion of palmitoleoyl-ACP (cis-hexadec-9-enoyl-ACP)
CC to cis-vaccenoyl-ACP (cis-octadec-11-enoyl-ACP), an essential step in
CC the thermal regulation of fatty acid composition.
CC {ECO:0000256|PIRNR:PIRNR000447}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(9Z)-hexadecenoyl-[ACP] + H(+) + malonyl-[ACP] = 3-oxo-(11Z)-
CC octadecenoyl-[ACP] + CO2 + holo-[ACP]; Xref=Rhea:RHEA:55040,
CC Rhea:RHEA-COMP:9623, Rhea:RHEA-COMP:9685, Rhea:RHEA-COMP:10800,
CC Rhea:RHEA-COMP:14074, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC ChEBI:CHEBI:64479, ChEBI:CHEBI:78449, ChEBI:CHEBI:83989,
CC ChEBI:CHEBI:138538; EC=2.3.1.179;
CC Evidence={ECO:0000256|PIRNR:PIRNR000447};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a fatty acyl-[ACP] + H(+) + malonyl-[ACP] = a 3-oxoacyl-[ACP]
CC + CO2 + holo-[ACP]; Xref=Rhea:RHEA:22836, Rhea:RHEA-COMP:9623,
CC Rhea:RHEA-COMP:9685, Rhea:RHEA-COMP:9916, Rhea:RHEA-COMP:14125,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:16526, ChEBI:CHEBI:64479,
CC ChEBI:CHEBI:78449, ChEBI:CHEBI:78776, ChEBI:CHEBI:138651;
CC Evidence={ECO:0000256|PIRNR:PIRNR000447};
CC -!- PATHWAY: Lipid metabolism; fatty acid biosynthesis.
CC {ECO:0000256|ARBA:ARBA00005194, ECO:0000256|PIRNR:PIRNR000447}.
CC -!- SIMILARITY: Belongs to the thiolase-like superfamily. Beta-ketoacyl-ACP
CC synthases family. {ECO:0000256|ARBA:ARBA00008467,
CC ECO:0000256|PIRNR:PIRNR000447, ECO:0000256|RuleBase:RU003694}.
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DR EMBL; AE000657; AAC07574.1; -; Genomic_DNA.
DR PIR; B70448; B70448.
DR RefSeq; NP_214178.1; NC_000918.1.
DR RefSeq; WP_010881115.1; NC_000918.1.
DR AlphaFoldDB; O67612; -.
DR STRING; 224324.aq_1717; -.
DR EnsemblBacteria; AAC07574; AAC07574; aq_1717.
DR KEGG; aae:aq_1717; -.
DR PATRIC; fig|224324.8.peg.1319; -.
DR eggNOG; COG0304; Bacteria.
DR HOGENOM; CLU_000022_69_2_0; -.
DR InParanoid; O67612; -.
DR OrthoDB; 9808669at2; -.
DR UniPathway; UPA00094; -.
DR Proteomes; UP000000798; Chromosome.
DR GO; GO:0005829; C:cytosol; IBA:GO_Central.
DR GO; GO:0004315; F:3-oxoacyl-[acyl-carrier-protein] synthase activity; IBA:GO_Central.
DR GO; GO:0006633; P:fatty acid biosynthetic process; IBA:GO_Central.
DR CDD; cd00834; KAS_I_II; 1.
DR Gene3D; 3.40.47.10; -; 1.
DR InterPro; IPR017568; 3-oxoacyl-ACP_synth-2.
DR InterPro; IPR000794; Beta-ketoacyl_synthase.
DR InterPro; IPR018201; Ketoacyl_synth_AS.
DR InterPro; IPR014031; Ketoacyl_synth_C.
DR InterPro; IPR014030; Ketoacyl_synth_N.
DR InterPro; IPR020841; PKS_Beta-ketoAc_synthase_dom.
DR InterPro; IPR016039; Thiolase-like.
DR InterPro; IPR020615; Thiolase_acyl_enz_int_AS.
DR NCBIfam; TIGR03150; fabF; 1.
DR PANTHER; PTHR11712:SF336; 3-OXOACYL-[ACYL-CARRIER-PROTEIN] SYNTHASE, MITOCHONDRIAL; 1.
DR PANTHER; PTHR11712; POLYKETIDE SYNTHASE-RELATED; 1.
DR Pfam; PF00109; ketoacyl-synt; 1.
DR Pfam; PF02801; Ketoacyl-synt_C; 1.
DR PIRSF; PIRSF000447; KAS_II; 1.
DR SMART; SM00825; PKS_KS; 1.
DR SUPFAM; SSF53901; Thiolase-like; 2.
DR PROSITE; PS00606; KS3_1; 1.
DR PROSITE; PS52004; KS3_2; 1.
DR PROSITE; PS00098; THIOLASE_1; 1.
PE 3: Inferred from homology;
KW Acyltransferase {ECO:0000256|ARBA:ARBA00023315,
KW ECO:0000256|PIRNR:PIRNR000447};
KW Fatty acid biosynthesis {ECO:0000256|ARBA:ARBA00023160,
KW ECO:0000256|PIRNR:PIRNR000447};
KW Fatty acid metabolism {ECO:0000256|ARBA:ARBA00022832};
KW Lipid biosynthesis {ECO:0000256|ARBA:ARBA00022516,
KW ECO:0000256|PIRNR:PIRNR000447};
KW Lipid metabolism {ECO:0000256|ARBA:ARBA00023098};
KW Reference proteome {ECO:0000313|Proteomes:UP000000798};
KW Transferase {ECO:0000256|PIRNR:PIRNR000447, ECO:0000256|RuleBase:RU003694}.
FT DOMAIN 2..412
FT /note="Ketosynthase family 3 (KS3)"
FT /evidence="ECO:0000259|PROSITE:PS52004"
FT ACT_SITE 165
FT /note="For beta-ketoacyl synthase activity"
FT /evidence="ECO:0000256|PIRSR:PIRSR000447-1"
SQ SEQUENCE 415 AA; 44697 MW; 964F2290C4F7D1C9 CRC64;
MKRRVVITGI GAVTPLGTGV KKFWENLVKG VSGVDYIKSF NPDEYGIPVK IAAEVKDFNP
EDFMDKKEAR KASRFVQFAI AAVKEALEDS GLLESEYDPY RVGVIIGTGI GGLKDIEDQT
LILKEKGARR VSPFFIPYGI SNMASGLVAI KWGFKGPNYC VTSACATGNH AIGDAFRLIQ
KGDIDIAIAG GTEAAITPLG VAGFASMKAL STRNDEPQKA SRPFDRDRDG FVMGEGAGIL
ILEEYERAKA RGAKIYAELV GYGATDDAYH ITSPHECGEG AYECMRLALE DAGIKPEEVD
YINAHGTSTP LNDKTETMAI KQLFGEHAYK LKISSNKSMI GHLLGAAAAV EAVATIKTIE
TGVIPPTINL ENPDPECDLD YVPNKAVEYP VRVALSNAFG FGGTNATLVF RKIEE
//
