ID D1KC00_9GAMM Unreviewed; 412 AA.
AC D1KC00;
DT 19-JAN-2010, integrated into UniProtKB/TrEMBL.
DT 19-JAN-2010, sequence version 1.
DT 13-SEP-2023, entry version 60.
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 ORFNames=Sup05_1100 {ECO:0000313|EMBL:EEZ80338.1};
OS uncultured Candidatus Thioglobus sp.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Candidatus Thioglobus;
OC environmental samples.
OX NCBI_TaxID=655186 {ECO:0000313|EMBL:EEZ80338.1, ECO:0000313|Proteomes:UP000009383};
RN [1] {ECO:0000313|EMBL:EEZ80338.1, ECO:0000313|Proteomes:UP000009383}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=19900896; DOI=10.1126/science.1175309;
RA Walsh D.A., Zaikova E., Howes C.L., Song Y.C., Wright J.J., Tringe S.G.,
RA Tortell P.D., Hallam S.J.;
RT "Metagenome of a versatile chemolithoautotroph from expanding oceanic dead
RT zones.";
RL Science 326:578-582(2009).
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; GG729993; EEZ80338.1; -; Genomic_DNA.
DR AlphaFoldDB; D1KC00; -.
DR STRING; 655186.Sup05_1100; -.
DR PATRIC; fig|655186.3.peg.898; -.
DR UniPathway; UPA00094; -.
DR Proteomes; UP000009383; Unassembled WGS sequence.
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; -; 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 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.
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:UP000009383};
KW Transferase {ECO:0000256|PIRNR:PIRNR000447, ECO:0000256|RuleBase:RU003694}.
FT DOMAIN 3..411
FT /note="Ketosynthase family 3 (KS3)"
FT /evidence="ECO:0000259|PROSITE:PS52004"
FT ACT_SITE 164
FT /note="For beta-ketoacyl synthase activity"
FT /evidence="ECO:0000256|PIRSR:PIRSR000447-1"
SQ SEQUENCE 412 AA; 43049 MW; 434A65FD332D6BD3 CRC64;
MSKRRVVITG MGIVSPVGNS VEESWKNILA GKSGINSLTN LKTEGQSVTF GGSVKNFDIT
DYISPKDAKK MDTFIHYGMA AGIQAIEDSG IEVTEKNAER IGVAIGAGIG GLGTIEKTAD
LFREKGAKRI SPFFVPSSII NMISGNLSIK YGLKGPNFAI VTACTTGTHN IGDASRLIEY
GDADVMVAGG AEMSTTNCGL GGFAAARALS TRNDDYATAS RPWDKDRDGF VLGDGAGVVV
LEEYEHAKAR GAKIYAEVSG YGMSGDAYHM TLPSKGGEGA ARCMKNAMKN AGINSNQVDY
INAHGTSTPA GDQAETDAAK LALGDHAYNI VMSSTKSMTG HLLGAAGGIE AIFTALAIQD
QVAPPTINII NQDPDCDLDY AANEAREIKI DYAISNSFGF GGTNGTILLS KV
//
