ID   FABF_STAAR              Reviewed;         414 AA.
AC   Q6GIA3;
DT   24-JAN-2006, integrated into UniProtKB/Swiss-Prot.
DT   19-JUL-2004, sequence version 1.
DT   25-MAY-2022, entry version 98.
DE   RecName: Full=3-oxoacyl-[acyl-carrier-protein] synthase 2;
DE            EC=2.3.1.179 {ECO:0000250|UniProtKB:P0AAI5};
DE   AltName: Full=3-oxoacyl-[acyl-carrier-protein] synthase II;
DE   AltName: Full=Beta-ketoacyl-ACP synthase II;
DE            Short=KAS II;
GN   Name=fabF; OrderedLocusNames=SAR0947;
OS   Staphylococcus aureus (strain MRSA252).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Staphylococcaceae;
OC   Staphylococcus.
OX   NCBI_TaxID=282458;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=MRSA252;
RX   PubMed=15213324; DOI=10.1073/pnas.0402521101;
RA   Holden M.T.G., Feil E.J., Lindsay J.A., Peacock S.J., Day N.P.J.,
RA   Enright M.C., Foster T.J., Moore C.E., Hurst L., Atkin R., Barron A.,
RA   Bason N., Bentley S.D., Chillingworth C., Chillingworth T., Churcher C.,
RA   Clark L., Corton C., Cronin A., Doggett J., Dowd L., Feltwell T., Hance Z.,
RA   Harris B., Hauser H., Holroyd S., Jagels K., James K.D., Lennard N.,
RA   Line A., Mayes R., Moule S., Mungall K., Ormond D., Quail M.A.,
RA   Rabbinowitsch E., Rutherford K.M., Sanders M., Sharp S., Simmonds M.,
RA   Stevens K., Whitehead S., Barrell B.G., Spratt B.G., Parkhill J.;
RT   "Complete genomes of two clinical Staphylococcus aureus strains: evidence
RT   for the rapid evolution of virulence and drug resistance.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:9786-9791(2004).
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:0000250|UniProtKB:P0AAI5}.
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:0000250|UniProtKB:P0AAI5};
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:0000250|UniProtKB:P0AAI5};
CC   -!- PATHWAY: Lipid metabolism; fatty acid biosynthesis.
CC       {ECO:0000250|UniProtKB:P0AAI5}.
CC   -!- SIMILARITY: Belongs to the thiolase-like superfamily. Beta-ketoacyl-ACP
CC       synthases family. {ECO:0000305}.
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DR   EMBL; BX571856; CAG39953.1; -; Genomic_DNA.
DR   RefSeq; WP_000081181.1; NC_002952.2.
DR   AlphaFoldDB; Q6GIA3; -.
DR   SMR; Q6GIA3; -.
DR   KEGG; sar:SAR0947; -.
DR   HOGENOM; CLU_000022_69_2_9; -.
DR   OMA; YRYIKYK; -.
DR   OrthoDB; 606297at2; -.
DR   UniPathway; UPA00094; -.
DR   Proteomes; UP000000596; Chromosome.
DR   GO; GO:0004315; F:3-oxoacyl-[acyl-carrier-protein] synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0006633; P:fatty acid biosynthetic process; IEA:UniProtKB-UniPathway.
DR   CDD; cd00834; KAS_I_II; 1.
DR   Gene3D; 3.40.47.10; -; 2.
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   PANTHER; PTHR11712; PTHR11712; 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; SSF53901; 2.
DR   TIGRFAMs; TIGR03150; fabF; 1.
DR   PROSITE; PS00606; B_KETOACYL_SYNTHASE; 1.
PE   3: Inferred from homology;
KW   Acyltransferase; Fatty acid biosynthesis; Fatty acid metabolism;
KW   Lipid biosynthesis; Lipid metabolism; Transferase.
FT   CHAIN           1..414
FT                   /note="3-oxoacyl-[acyl-carrier-protein] synthase 2"
FT                   /id="PRO_0000180323"
FT   ACT_SITE        165
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU10022"
SQ   SEQUENCE   414 AA;  43724 MW;  8A6CC07F39BF33DC CRC64;
     MSQNIRVVIT GMGALSPIGN DVKTTWENAL KGVNGIDKIT RIDTEPYSVH LAGELKNFNI
     EDHIDKKEAR RMDRFTQYAI VAAREAVKDA QLDINENTAD RIGVWIGSGI GGMETFEIAH
     KQLMDKGPRR VSPFFVPMLI PDMATGQVSI DLGAKGPNGA TVTACATGTN SIGEAFKIVQ
     RGDADAMITG GTEAPITHMA IAGFSASRAL STNDDIETAC RPFQEGRDGF VMGEGAGILV
     IESLESAQAR GANIYAEIVG YGTTGDAYHI TAPAPEGEGG SRAMQAAMDD AGIEPKDVQY
     LNAHGTSTPV GDLNEVKAIK NTFGEAAKHL KVSSTKSMTG HLLGATGGIE AIFSALSIKD
     SKVAPTIHAV TPDPECDLDI VPNEAQDLDI TYAMSNSLGF GGHNAVLVFK KFEA