5.5.1.6: chalcone isomerase
This is an abbreviated version!
For detailed information about chalcone isomerase, go to the full flat file.
Word Map on EC 5.5.1.6
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5.5.1.6
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flavonoid
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anthocyanins
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dihydroflavonol
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ammonia-lyase
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naringenin
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phenylpropanoids
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anthocyanidin
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4-reductase
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cinnamate
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isoflavone
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flavone
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4-hydroxylase
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isoflavonoids
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3\'-hydroxylase
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3-o-glucosyltransferase
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r2r3-myb
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4-coumarate:coa
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leucoanthocyanidin
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4-coumarate
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3',5'-hydroxylase
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agriculture
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petroselinum
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2s-naringenin
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2s-flavanones
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analysis
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lindemuthianum
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4.3.1.5
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synthesis
- 5.5.1.6
- flavonoid
- anthocyanins
- dihydroflavonol
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ammonia-lyase
- naringenin
-
phenylpropanoids
- anthocyanidin
-
4-reductase
- cinnamate
- isoflavone
- flavone
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4-hydroxylase
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isoflavonoids
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3\'-hydroxylase
- 3-o-glucosyltransferase
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r2r3-myb
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4-coumarate:coa
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leucoanthocyanidin
- 4-coumarate
-
3',5'-hydroxylase
- agriculture
- petroselinum
- 2s-naringenin
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2s-flavanones
- analysis
- lindemuthianum
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4.3.1.5
- synthesis
Reaction
Synonyms
Chalcone isomerase, chalcone isomerase-like protein, Chalcone-flavanone isomerase, CHI, Chi-1, Chi1, CHI1A, CHI1B1, CHI1B2, CHI2, CHI2B1, CHI2B2, Chi3, CHI3A, CHI3A1, CHI3A2, CHI3B, CHI3B1, CHI3C1, CHI3C2, CHI4, CHI4A, CHI4B, CHIL, CHIL1, CHIL2, EFP, Isomerase, chalcone, MpCHI, SlCHI1, taxifolin-isomerizing enzyme, TRANSPARENT TESTA 5 protein, TT5, type IV CHI protein
ECTree
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General Information
General Information on EC 5.5.1.6 - chalcone isomerase
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evolution
malfunction
metabolism
physiological function
additional information
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GbCHI belongs to the chalcone superfamily, phylogenetic tree, overview
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MpCHI transformed salt-sensitive Saccharomyces cerevisiae mutants show improved salt-tolerance significantly compared to pYES2-vector transformed yeast mutants, suggesting the MpCHI or the flavonoid biosynthesis pathway could regulate the resistance to salt stress in Millettia pinnata
malfunction
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transgenic complementation experiments show that SlCHI1 (Af) is required not only for the synthesis of anthocyanins and other flavonoids but also plays a role in promoting the accumulation of terpenoids in glandular trichomes
metabolism
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chalcone isomerase is one of the key enzymes in the flavonoid biosynthesis pathway catalyzing the stereospecific isomerization of chalcones into their corresponding (2S)-flavanones
metabolism
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CHI catalyzes the first step in flavonoid biosynthesis pathway, overview
metabolism
the enzyme is involved in anthocyanin biosynthesis
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CHI as a key gene regulating flavonoid accumulation in ginkgo leaves
physiological function
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CHI converts chalcones into the corresponding flavanones by selectively binding an ionized chalcone in a conformation conducive to ring closure in a diffusion controlled reaction, thus accelerating the stereochemically defined intramolecular cyclization reaction yielding a biologically active (S)-isomer
physiological function
importance of CHI in flavone biosynthesis
physiological function
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findings suggest a role the enzyme in coordinating the developmental plasticity and metabolic activity of an epidermal structure that shields against biotic stress
physiological function
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isoforms CHIL1 and CHIL2 play a significant role in demethylxanthohumol biosynthesis in hop glandular trichomes: CHIL2 enhances the catalytic efficiency of chalcone synthase_H1 and prnyltransferase 1L through protein-protein interactions, whereas CHIL1 stabilizes the ring-open conformation of demethylxanthohumol
physiological function
the EFP protein contributes in early step(s) of the flavonoid biosynthetic pathway to ensure production of flavonoid compounds and therefore is an enhancer of flavonoid production and flower pigmentation
physiological function
the enzyme is involved in tree peony flower pigmentation
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effects of cross-talk interactions of sucrose and infection caused by a pathogenic fungus Fusarium oxysporum f.sp. lupini on the regulation of the phenylpropanoid pathway, i.e. the level of expression of genes encoding enzymes participating in flavonoid biosynthesis, as well as cell location and accumulation of these compounds in embryo axes of Lupinus luteus L. cv. Polo, overview
additional information
efficiency of metabolic engineering in hairy roots, overview
additional information
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efficiency of metabolic engineering in hairy roots, overview
additional information
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effects of cross-talk interactions of sucrose and infection caused by a pathogenic fungus Fusarium oxysporum f.sp. lupini on the regulation of the phenylpropanoid pathway, i.e. the level of expression of genes encoding enzymes participating in flavonoid biosynthesis, as well as cell location and accumulation of these compounds in embryo axes of Lupinus luteus L. cv. Polo, overview
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