A polyketide synthase from the plant Curcuma longa (turmeric). Three isoforms exist, CURS1, CURS2 and CURS3. While CURS1 and CURS2 prefer feruloyl-CoA as a starter substrate (cf. EC 2.3.1.217, curcumin synthase), CURS3 can accept 4-coumaroyl-CoA equally well .
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The expected taxonomic range for this enzyme is: Curcuma longa
A polyketide synthase from the plant Curcuma longa (turmeric). Three isoforms exist, CURS1, CURS2 and CURS3. While CURS1 and CURS2 prefer feruloyl-CoA as a starter substrate (cf. EC 2.3.1.217, curcumin synthase), CURS3 can accept 4-coumaroyl-CoA equally well [1].
substrate specificity, overview. CURS2 prefers feruloyl-CoA as a starter substrate, cf. EC 2.3.1.217, while CURS3 is equally active with both feruloyl-CoA and 4-coumaroyl-CoA. Thus, CURS2 synthesizes curcumin or demethoxycurcumin and CURS3 synthesizes curcumin, bisdemethoxycurcumin and demethoxycurcumin
substrate specificity, overview. CURS2 prefers feruloyl-CoA as a starter substrate, cf. EC 2.3.1.217, while CURS3 is equally active with both feruloyl-CoA and 4-coumaroyl-CoA. Thus, CURS2 synthesizes curcumin or demethoxycurcumin and CURS3 synthesizes curcumin, bisdemethoxycurcumin and demethoxycurcumin
substrate specificity, overview. CURS2 prefers feruloyl-CoA as a starter substrate, cf. EC 2.3.1.217, while CURS3 is equally active with both feruloyl-CoA and 4-coumaroyl-CoA. Thus, CURS2 synthesizes curcumin or demethoxycurcumin and CURS3 synthesizes curcumin, bisdemethoxycurcumin and demethoxycurcumin
substrate specificity, overview. CURS2 prefers feruloyl-CoA as a starter substrate, cf. EC 2.3.1.217, while CURS3 is equally active with both feruloyl-CoA and 4-coumaroyl-CoA. Thus, CURS2 synthesizes curcumin or demethoxycurcumin and CURS3 synthesizes curcumin, bisdemethoxycurcumin and demethoxycurcumin
substrate specificity, overview. CURS2 prefers feruloyl-CoA as a starter substrate, while CURS3 is equally active with both feruloyl-CoA and 4-coumaroyl-CoA, cf. EC 2.3.1.217. Thus, CURS2 synthesizes curcumin or demethoxycurcumin and CURS3 synthesizes curcumin, bisdemethoxycurcumin and demethoxycurcumin
substrate specificity, overview. CURS2 prefers feruloyl-CoA as a starter substrate, while CURS3 is equally active with both feruloyl-CoA and 4-coumaroyl-CoA, cf. EC 2.3.1.217. Thus, CURS2 synthesizes curcumin or demethoxycurcumin and CURS3 synthesizes curcumin, bisdemethoxycurcumin and demethoxycurcumin
substrate specificity, overview. CURS2 prefers feruloyl-CoA as a starter substrate, while CURS3 is equally active with both feruloyl-CoA and 4-coumaroyl-CoA, cf. EC 2.3.1.217. Thus, CURS2 synthesizes curcumin or demethoxycurcumin and CURS3 synthesizes curcumin, bisdemethoxycurcumin and demethoxycurcumin
substrate specificity, overview. CURS2 prefers feruloyl-CoA as a starter substrate, while CURS3 is equally active with both feruloyl-CoA and 4-coumaroyl-CoA, cf. EC 2.3.1.217. Thus, CURS2 synthesizes curcumin or demethoxycurcumin and CURS3 synthesizes curcumin, bisdemethoxycurcumin and demethoxycurcumin
CURS can collaborate with curcumin synthase, DCS, EC 2.3.1.218, which provides the substrate feruloylacetyl-CoA from condensation of feruloyl-CoA and malonyl-CoA, overview
the enzyme belongs to the Type III polyketide synthase family. A Cys-His-Asn catalytic triad is conserved in all known type III PKSs; the enzyme belongs to the Type III polyketide synthase family. A Cys-His-Asn catalytic triad is conserved in all known type III PKSs; the enzyme belongs to the Type III polyketide synthase family. A Cys-His-Asn catalytic triad is conserved in all known type III PKSs
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CLONED/commentary
ORGANISM
UNIPROT
LITERATURE
CURS1, DNA and amino acid sequence determination and analysis, expression analysis by quantitative real time PCR; CURS2, DNA and amino acid sequence determination and analysis, expression analysis by quantitative real time PCR; CURS3, DNA and amino acid sequence determination and analysis, expression analysis by quantitative real time PCR
DNA and amino acid sequence determination and analysis, expression analysis by quantitative real-time PCR, recombinant expression as N-terminally His-tagged enzyme in Escherichia coli strain BL21(DE3)
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2.3.1.219 demethoxycurcumin synthase
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