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ENZYME

ENZYME entry: EC 2.2.1.6

Accepted Name
acetolactate synthase
Alternative Name(s)
acetohydroxyacid synthase
acetohydroxy acid synthetase
acetolactate pyruvate-lyase (carboxylating)
acetolactic synthetase
alpha-acetohydroxyacid synthase
alpha-acetohydroxy acid synthetase
alpha-acetolactate synthase
alpha-acetolactate synthetase
Reaction catalysed
H(+) + 2 pyruvate <=> (2S)-2-acetolactate + CO2
Comment(s)
  • The reaction shown is in the pathway of biosynthesis of valine.
  • The enzyme can also transfer the acetaldehyde from pyruvate to 2-oxobutanoate, forming 2-ethyl-2-hydroxy-3-oxobutanoate, also known as 2-aceto-2-hydroxybutanoate, a reaction in the biosynthesis of isoleucine.
  • Formerly EC 4.1.3.18.
Cross-references
BRENDA2.2.1.6
EC2PDB2.2.1.6
ExplorEnz2.2.1.6
PRIAM enzyme-specific profiles2.2.1.6
KEGG Ligand Database for Enzyme Nomenclature2.2.1.6
IUBMB Enzyme Nomenclature2.2.1.6
IntEnz2.2.1.6
MEDLINEFind literature relating to 2.2.1.6
MetaCyc2.2.1.6
Rhea expert-curated reactions2.2.1.6
UniProtKB/Swiss-Prot
P27818, ILVB1_BRANAQ41768, ILVB1_MAIZEP9WG40, ILVB1_MYCTO
P9WG41, ILVB1_MYCTUQ6K2E8, ILVB1_ORYSJP09342, ILVB1_TOBAC
P14874, ILVB2_BRANAQ41769, ILVB2_MAIZEO06335, ILVB2_MYCTU
Q7XKQ8, ILVB2_ORYSJP09114, ILVB2_TOBACP27819, ILVB3_BRANA
P17597, ILVB_ARATHP27868, ILVB_ARTPTP37251, ILVB_BACSU
P42463, ILVB_CORGLQ6SSJ3, ILVB_CRYNHQ5KPJ5, ILVB_CRYNJ
O19929, ILVB_CYACAP08142, ILVB_ECOLIO78518, ILVB_GUITH
Q09129, ILVB_KLEAEP27696, ILVB_KLEPNQ02137, ILVB_LACLA
O08353, ILVB_METAOQ57725, ILVB_METJAQ59498, ILVB_MYCAV
P0A623, ILVB_MYCBOO33112, ILVB_MYCLEQ1XDF6, ILVB_NEOYE
Q7U5G1, ILVB_PARMWP69683, ILVB_PORPUP69684, ILVB_PORUM
Q04524, ILVB_RAOTEP36620, ILVB_SCHPOP07342, ILVB_YEAST
P0DP90, ILVG_ECOLIP66947, ILVG_MYCBOP9WG38, ILVG_MYCTO
P9WG39, ILVG_MYCTUO67703, ILVH_AQUAEO28555, ILVH_ARCFU
P37252, ILVH_BACSUP57320, ILVH_BUCAIO85294, ILVH_BUCAP
Q89AP8, ILVH_BUCBPQ9TLY1, ILVH_CYACAP00894, ILVH_ECOLI
Q9MS98, ILVH_GALSUO78451, ILVH_GUITHP45260, ILVH_HAEIN
Q02140, ILVH_LACLAQ57625, ILVH_METJAO27492, ILVH_METTH
Q59499, ILVH_MYCAVP65162, ILVH_MYCBOO33113, ILVH_MYCLE
A0QUX7, ILVH_MYCS2P9WKJ2, ILVH_MYCTOP9WKJ3, ILVH_MYCTU
Q1XDQ7, ILVH_NEOYEP51230, ILVH_PORPUP21622, ILVH_SALTY
Q55141, ILVH_SYNY3P57321, ILVI_BUCAIO85293, ILVI_BUCAP
Q89AP7, ILVI_BUCBPQ9RQ65, ILVI_BUCSCP00893, ILVI_ECOLI
P45261, ILVI_HAEINP40811, ILVI_SALTYP0ADG2, ILVM_ECOL6
P0ADG1, ILVM_ECOLIP0ADG3, ILVM_SHIFLP0ADG0, ILVN_ECO57
P0ADF9, ILVN_ECOL6P0ADF8, ILVN_ECOLIQ04789, ILVX_BACSU
O53554, ILVX_MYCTU

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.2.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.2.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.-.-.-