2.3.1.99: quinate O-hydroxycinnamoyltransferase
This is an abbreviated version!
For detailed information about quinate O-hydroxycinnamoyltransferase, go to the full flat file.
Word Map on EC 2.3.1.99
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2.3.1.99
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chlorogenic
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phenol
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phenylpropanoids
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tubers
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potato
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solanum
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tuberosum
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quinic
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trans-cinnamate
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cinnamate
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caffeoyl-coa
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agriculture
- 2.3.1.99
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chlorogenic
- phenol
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phenylpropanoids
- tubers
- potato
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solanum
- tuberosum
-
quinic
- trans-cinnamate
- cinnamate
- caffeoyl-coa
- agriculture
Reaction
Synonyms
CQT, HCT, HQT, HQT1, HQT2, hydroxycinnamoyl CoA:quinate hydroxycinnamyl transferase, hydroxycinnamoyl CoA:quinate O-hydroxycinnamyltransferase, hydroxycinnamoyl coenzyme A-quinate transferase, hydroxycinnamoyl-CoA quinate hydroxycinnamoyl transferase, hydroxycinnamoyl-CoA:quinate hydroxycinnamoyltransferase, hydroxycinnamoyltransferase, hydroxycinnamoyltransferase, quinate, shikimate/quinate hydroxycinnamoyltransferase
ECTree
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General Information
General Information on EC 2.3.1.99 - quinate O-hydroxycinnamoyltransferase
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evolution
Coleus scutellarioides
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the enzyme belongs to the superfamily of BAHD acyltransferases. The conserved sequence motifs HxxxDG and DFGWG are surrounded by differing amino acid environments which show typical features for hydroxycinnamoyl-CoA:hydroxyphenyllactic acid hydroxycinnamoyltransferase, RAS, and hydroxycinnamoyl-CoA:shikimic acid hydroxycinnamoyltransferase/hydroxycinnamoyl-CoA:quinate hydroxycinnamoyltransferase, HST/HQT
metabolism
physiological function
polyphenol metabolism and chlorogenic acid synthesis pathway involving the enzyme, overview
metabolism
polyphenol metabolism and chlorogenic acid synthesis pathway involving the enzyme, overview
metabolism
HQT is involved in one of three possible pathways of chlorogenate biosynthesis, overview
metabolism
Coleus scutellarioides
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quinate is used as acceptor molecule by a HQT and 4-coumaroylquinate is formed, which is hydroxylated by a member of the CYP98A family to chlorogenic acid
constitutive expression of HQT in Arabidopsis thaliana results in the production of 5-caffeoylquinic acid in the leaf and an higher level of resistance to the bacterial pathogen Pseudomonas syringae. 5-caffeoylquinic acid synthesis is positively correlated with HQT transcript abundance
physiological function
expression in Nicotiana tabacum causes a higher total production of chlorogenic acids
physiological function
expression in Nicotiana tabacum causes a higher total production of chlorogenic acids
physiological function
in callus of recombinant Lonicera japonica, there is a positive correlation between chlorogenic acid content and the expression of Hqt
physiological function
Taraxacum antungense lines overexpressing HQT increases chlorogenic acid but not caffeic acid concentrations. The chlorogenic acid concentration is significantly higher in the leaves than in the roots. The overexpression lines are more salt resistant than the wild-type and RNAi lines
physiological function
Taraxacum antungense Kitag
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Taraxacum antungense lines overexpressing HQT increases chlorogenic acid but not caffeic acid concentrations. The chlorogenic acid concentration is significantly higher in the leaves than in the roots. The overexpression lines are more salt resistant than the wild-type and RNAi lines
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