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NiceZyme View of ENZYME: EC 2.3.1.41

Accepted Name
Beta-ketoacyl-acyl-carrier-protein synthase I.
Alternative Name(s)
3-ketoacyl-acyl carrier protein synthase.
3-oxoacyl-[acyl-carrier-protein] synthase.
Acyl-malonyl acyl carrier protein-condensing enzyme.
Acyl-malonyl(acyl-carrier-protein)-condensing enzyme.
Beta-ketoacyl acyl carrier protein synthase.
Beta-ketoacyl synthetase.
Beta-ketoacyl-[acyl carrier protein] synthase.
Beta-ketoacyl-ACP synthase I.
Beta-ketoacyl-ACP synthetase.
Beta-ketoacyl-acyl carrier protein synthetase.
Beta-ketoacylsynthase.
Condensing enzyme.
Fatty acid condensing enzyme.
KAS I.
Reaction catalysed
Acyl-[acyl-carrier-protein] + malonyl-[acyl-carrier-protein] <=> 3-oxoacyl-[acyl-carrier-protein] + CO(2) + [acyl-carrier-protein]
Comment(s)
  • Responsible for the chain-elongation step of dissociated (type II) fatty-acid biosynthesis, i.e. the addition of two C atoms to the fatty-acid chain.
  • Escherichia coli mutants that lack this enzyme are deficient in unsaturated fatty acids.
  • Can use fatty acyl thioesters of ACP (C(2) to C(16)) as substrates, as well as fatty acyl thioesters of Co-A (C(4) to C(16)).
  • The substrate specificity is very similar to that of EC 2.3.1.179 with the exception that the latter enzyme is far more active with palmitoleoyl-ACP (C(16)-Delta(9)) as substrate, allowing the organism to regulate its fatty-acid composition with changes in temperature.
Cross-references
Biochemical Pathways; map number(s)E7
PROSITEPDOC00529
BRENDA2.3.1.41
EC2PDB2.3.1.41
PRIAM enzyme-specific profiles2.3.1.41
KEGG Ligand Database for Enzyme Nomenclature2.3.1.41
IUBMB Enzyme Nomenclature2.3.1.41
IntEnz2.3.1.41
MEDLINEFind literature relating to 2.3.1.41
MetaCyc2.3.1.41
UniProtKB/Swiss-Prot
P39525, CEM1_YEAST;  P63455, FAB1_MYCBO;  Q9CBS7, FAB1_MYCLE;  
P63454, FAB1_MYCTU;  P63457, FAB2_MYCBO;  O69473, FAB2_MYCLE;  
P63456, FAB2_MYCTU;  P57193, FABB_BUCAI;  Q8KA28, FABB_BUCAP;  
Q89AY4, FABB_BUCBP;  P0A954, FABB_ECOL6;  P0A953, FABB_ECOLI;  
P43710, FABB_HAEIN;  A1TLD7, FABH_ACIAC;  Q1IQ32, FABH_ACIBL;  
A5FV65, FABH_ACICJ;  A1WAX8, FABH_ACISJ;  A3N232, FABH_ACTP2;  
A6VQV2, FABH_ACTSZ;  Q0A8R5, FABH_ALHEH;  Q5PA98, FABH_ANAMM;  
Q3M9J4, FABH_ANAVT;  A8ERJ6, FABH_ARCB4;  A1K5Y5, FABH_AZOSB;  
Q5P0D6, FABH_AZOSE;  A8FBX4, FABH_BACP2;  A6KXK3, FABH_BACV8;  
Q1LT37, FABH_BAUCH;  Q492Q4, FABH_BLOPB;  Q2KUK5, FABH_BORA1;  
A5EKG5, FABH_BRASB;  A4YW84, FABH_BRASO;  Q1BXV4, FABH_BURCA;  
A0K5U6, FABH_BURCH;  A3MM55, FABH_BURM7;  A2S9Y2, FABH_BURM9;  
Q62LU2, FABH_BURMA;  A1V6D0, FABH_BURMS;  A3NXM9, FABH_BURP0;  
Q3JQ65, FABH_BURP1;  A3NBU2, FABH_BURP6;  Q63S83, FABH_BURPS;  
Q39I86, FABH_BURS3;  Q2SXU7, FABH_BURTA;  A4JCP8, FABH_BURVG;  
A7ZC01, FABH_CAMC1;  A7H054, FABH_CAMC5;  A0RMK8, FABH_CAMFF;  
A7I3D6, FABH_CAMHC;  A8FKB7, FABH_CAMJ8;  A7H541, FABH_CAMJD;  
A1VY47, FABH_CAMJJ;  Q5HWE3, FABH_CAMJR;  Q3AQ09, FABH_CHLCH;  
A1BJA1, FABH_CHLPD;  Q3KMC3, FABH_CHLTA;  A8AHY1, FABH_CITK8;  
A7FPM6, FABH_CLOB1;  A5I7X8, FABH_CLOBH;  A7GJJ9, FABH_CLOBL;  
Q18B40, FABH_CLOD6;  A0PXB6, FABH_CLONN;  Q0TRH0, FABH_CLOP1;  
Q0STU9, FABH_CLOPS;  Q30YM1, FABH_DESDG;  Q6AJF8, FABH_DESPS;  
Q72CS6, FABH_DESVH;  A1VEK1, FABH_DESVV;  A7ZKJ4, FABH_ECO24;  
A7ZZ48, FABH_ECOHS;  A1A9Y5, FABH_ECOK1;  Q0TIY3, FABH_ECOL5;  
Q1RD66, FABH_ECOUT;  Q3YRP7, FABH_EHRCJ;  Q2GH17, FABH_EHRCR;  
Q5FFP2, FABH_EHRRG;  Q5HAV9, FABH_EHRRW;  A4W9A5, FABH_ENT38;  
A7MFQ4, FABH_ENTS8;  Q5L1U1, FABH_GEOKA;  Q0BTE0, FABH_GRABC;  
Q4QP30, FABH_HAEI8;  A5UFW1, FABH_HAEIG;  Q0I0V6, FABH_HAES1;  
Q17YQ2, FABH_HELAH;  Q1CUV9, FABH_HELPH;  A4G6T2, FABH_HERAR;  
Q0C312, FABH_HYPNA;  A6SXP9, FABH_JANMA;  Q28RG1, FABH_JANSC;  
A6T7F1, FABH_KLEP7;  Q03RV2, FABH_LACBA;  A8YXS0, FABH_LACH4;  
A2RM32, FABH_LACLM;  Q030J8, FABH_LACLS;  Q38XG4, FABH_LACSS;  
A0AKV5, FABH_LISW6;  Q2W4R7, FABH_MAGMM;  A1U0E3, FABH_MARAV;  
A0QLF3, FABH_MYCA1;  A1KG10, FABH_MYCBP;  A5TZR3, FABH_MYCTA;  
A0PLS8, FABH_MYCUA;  Q5F4X5, FABH_NEIG1;  A1KRY9, FABH_NEIMF;  
Q2GDD8, FABH_NEOSM;  Q0AIS4, FABH_NITEC;  Q2G5S1, FABH_NOVAD;  
A6LEP7, FABH_PARD8;  A1B364, FABH_PARDP;  Q3B6K8, FABH_PELLD;  
A1VRU7, FABH_POLNA;  Q126I8, FABH_POLSJ;  A3PAK3, FABH_PROM0;  
A8G2E1, FABH_PROM2;  A2BUB2, FABH_PROM5;  Q31D45, FABH_PROM9;  
Q46HN8, FABH_PROMT;  Q15TZ6, FABH_PSEA6;  Q02QG7, FABH_PSEAB;  
Q3IBW0, FABH_PSEHT;  A1STW1, FABH_PSYIN;  Q0K8L9, FABH_RALEH;  
Q46Z05, FABH_RALEJ;  Q21XP4, FABH_RHOFD;  A3PJ64, FABH_RHOS1;  
Q3J365, FABH_RHOS4;  A4WTT9, FABH_RHOS5;  A8GPW1, FABH_RICAH;  
A8GY06, FABH_RICB8;  A8EZX3, FABH_RICCK;  A8F2R3, FABH_RICM5;  
A8GTP2, FABH_RICRS;  Q164C9, FABH_ROSDO;  Q1AW87, FABH_RUBXD;  
Q57QG4, FABH_SALCH;  Q5PGU1, FABH_SALPA;  A8GD17, FABH_SERP5;  
Q31ZE6, FABH_SHIBS;  Q32EV1, FABH_SHIDS;  Q0T5U5, FABH_SHIF8;  
Q3Z326, FABH_SHISS;  Q5LQJ5, FABH_SILPO;  Q1GI69, FABH_SILST;  
Q2NU42, FABH_SODGM;  Q1GT90, FABH_SPHAL;  A7X0K2, FABH_STAA1;  
Q2FI93, FABH_STAA3;  Q2FZS0, FABH_STAA8;  Q2YWV3, FABH_STAAB;  
A6QFJ3, FABH_STAAE;  Q3K338, FABH_STRA1;  Q04M58, FABH_STRP2;  
Q1JA87, FABH_STRPB;  Q1JKE0, FABH_STRPC;  Q1JFD2, FABH_STRPD;  
Q1J582, FABH_STRPF;  A2RCX0, FABH_STRPG;  Q48RR7, FABH_STRPM;  
A4W3N0, FABH_STRS2;  A3CQ60, FABH_STRSV;  A4VXD4, FABH_STRSY;  
Q5M184, FABH_STRT1;  Q5M5S1, FABH_STRT2;  Q03M55, FABH_STRTD;  
Q30PN6, FABH_SULDN;  Q31N84, FABH_SYNE7;  Q5N5X5, FABH_SYNP6;  
A5GP11, FABH_SYNPW;  A5GQJ2, FABH_SYNR3;  Q0AVV3, FABH_SYNWW;  
Q3SIM4, FABH_THIDA;  Q114K0, FABH_TRIEI;  A1WMX5, FABH_VEREI;  
A5CWU7, FABH_VESOH;  Q5E409, FABH_VIBF1;  Q5GS22, FABH_WOLTR;  
Q3BWI9, FABH_XANC5;  Q4URQ0, FABH_XANC8;  Q2P7B9, FABH_XANOM;  
A1JN67, FABH_YERE8;  A7FH25, FABH_YERP3;  Q1C6M8, FABH_YERPA;  
Q1CI19, FABH_YERPN;  A4TLS3, FABH_YERPP;  Q669L1, FABH_YERPS;  
P43098, FAS2_CANAL;  P15368, FAS2_PENPA;  Q10289, FAS2_SCHPO;  
P19097, FAS2_YEAST;  Q71SP7, FAS_BOVIN;  P12276, FAS_CHICK;  
P49327, FAS_HUMAN;  P19096, FAS_MOUSE;  P12785, FAS_RAT;  
P52410, KASC1_ARATH;  P23902, KASC1_HORVU;  Q8L3X9, KASM_ARATH;  
Q0VCA7, OXSM_BOVIN;  Q9NWU1, OXSM_HUMAN;  Q9D404, OXSM_MOUSE;  
O94297, OXSM_SCHPO;  

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.3.1.-
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