Enzymes
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- Name help_outline (E)-feruloyl-CoA Identifier CHEBI:87305 Charge -4 Formula C31H40N7O19P3S InChIKeyhelp_outline GBXZVJQQDAJGSO-NBXNMEGSSA-J SMILEShelp_outline COc1cc(\C=C\C(=O)SCCNC(=O)CCNC(=O)[C@H](O)C(C)(C)COP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](O)[C@@H]2OP([O-])([O-])=O)n2cnc3c(N)ncnc23)ccc1O 2D coordinates Mol file for the small molecule Search links Involved in 18 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline L-quinate Identifier CHEBI:29751 Charge -1 Formula C7H11O6 InChIKeyhelp_outline AAWZDTNXLSGCEK-WYWMIBKRSA-M SMILEShelp_outline O[C@@H]1C[C@@](O)(C[C@@H](O)[C@H]1O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 7 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 4-O-feruloyl-D-quinate Identifier CHEBI:60078 Charge -1 Formula C17H19O9 InChIKeyhelp_outline VTMFDSJJVNQXLT-KSQYBWRXSA-M SMILEShelp_outline COc1cc(ccc1O)\C=C\C(=O)O[C@H]1[C@H](O)C[C@@](O)(C[C@H]1O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CoA Identifier CHEBI:57287 (Beilstein: 11604429) help_outline Charge -4 Formula C21H32N7O16P3S InChIKeyhelp_outline RGJOEKWQDUBAIZ-IBOSZNHHSA-J SMILEShelp_outline CC(C)(COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12)[C@@H](O)C(=O)NCCC(=O)NCCS 2D coordinates Mol file for the small molecule Search links Involved in 1,500 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:15021 | RHEA:15022 | RHEA:15023 | RHEA:15024 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Purification and characterization of hydroxycinnamoyl D-glucose. Quinate hydroxycinnamoyl transferase in the root of sweet potato, Ipomoea batatas Lam.
Villegas R.J., Kojima M.
We have previously proposed a chlorogenic acid biosynthetic pathway which involves a transesterification reaction between hydroxycinnamoyl D-glucose and D-quinic acid. The proposed pathway was based on tracer experimental results (Kojima, M., and Uritani, I. (1972) Plant Cell Physiol. 13, 311-319) ... >> More
We have previously proposed a chlorogenic acid biosynthetic pathway which involves a transesterification reaction between hydroxycinnamoyl D-glucose and D-quinic acid. The proposed pathway was based on tracer experimental results (Kojima, M., and Uritani, I. (1972) Plant Cell Physiol. 13, 311-319). The enzyme that catalyzes the above reaction has been purified 160-fold from sweet potato root (Ipomoea batatas Lam.) and characterized. The purified enzyme yielded one band of 26,000 daltons on sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and its molecular weight was estimated to be 25,000 by gel filtration chromatography. Therefore, the enzyme seems to consist of a single polypeptide of 25,000-26,000 daltons. The isoelectric point of the enzyme was 8.6. The optimum pH of the enzyme reaction was 6.0. The enzyme did not require any metal for activity and showed a broad substrate specificity toward hydroxycinnamoyl D-glucose as donors. The Km and Vmax values were 3.7 mM and 8.5 units/mg of protein for t-cinnamoyl D-glucose, 3.9 mM and 15.1 units/mg of protein for p-coumaroyl D-glucose, and 14.3 mM and 38.1 units/mg of protein for caffeoyl D-glucose. The enzyme showed a strict substrate specificity toward D-quinic acid-related compounds as acceptors; the Km and Vmax values were 16.7 mM and 15.1 units/mg of protein for D-quinic acid, 250 mM and 19.0 units/mg of protein for shikimic acid, and there was no activity with either L-malic acid or meso-tartaric acid. The enzyme activity changed in a manner suggesting its involvement in chlorogenic acid biosynthesis during incubation of sliced sweet potato root tissues. << Less
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Enzymic synthesis of caffeoylglucaric Acid from chlorogenic Acid and glucaric Acid by a protein preparation from tomato cotyledons.
Strack D., Gross W., Wray V., Grotjahn L.
The phenylpropane metabolism of tomato (Lycopersicon esculentum Mill) cotyledons was investigated. The HPLC analysis revealed two hydroxycinnamic-acid conjugates as major components, identified as chlorogenic acid (5-O-caffeoylquinic acid) and caffeoylglucaric acid (2-O- or 5-O-caffeoyl-glucaric a ... >> More
The phenylpropane metabolism of tomato (Lycopersicon esculentum Mill) cotyledons was investigated. The HPLC analysis revealed two hydroxycinnamic-acid conjugates as major components, identified as chlorogenic acid (5-O-caffeoylquinic acid) and caffeoylglucaric acid (2-O- or 5-O-caffeoyl-glucaric acid). Quantitative analyses indicated a precursor-product relationship between the chlorogenic and caffeoylglucaric acids. Protein preparations from tomato cotyledons were found to catalyze the formation of caffeoylglucaric acid with chlorogenic acid as acyl donor and free glucaric acid as acceptor molecule. This enzyme activity, possibly to be classified as hydroxycinnamoylquinic acid:glucaric acid hydroxycinnamoyltransferase, acts together with hydroxycinnamoyl-CoA: quinic acid hydroxycinnamoyltransferase. << Less
Plant Physiol 83:475-478(1987) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.