Enzymes
| UniProtKB help_outline | 1 proteins |
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| GO Molecular Function help_outline |
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Reaction participants Show >> << Hide
- Name help_outline licodione Identifier CHEBI:77711 Charge -1 Formula C15H11O5 InChIKeyhelp_outline QIEKMEBGIJSGGB-UHFFFAOYSA-M SMILEShelp_outline Oc1ccc(C(=O)CC(=O)c2ccc([O-])cc2)c(O)c1 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline S-adenosyl-L-methionine Identifier CHEBI:59789 Charge 1 Formula C15H23N6O5S InChIKeyhelp_outline MEFKEPWMEQBLKI-AIRLBKTGSA-O SMILEShelp_outline C[S+](CC[C@H]([NH3+])C([O-])=O)C[C@H]1O[C@H]([C@H](O)[C@@H]1O)n1cnc2c(N)ncnc12 2D coordinates Mol file for the small molecule Search links Involved in 842 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 2'-O-methyllicodione Identifier CHEBI:77642 Charge -1 Formula C16H13O5 InChIKeyhelp_outline DMOSJPZKOKLUKK-UHFFFAOYSA-M SMILEShelp_outline COc1cc(O)ccc1C(=O)CC(=O)c1ccc([O-])cc1 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 H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,176 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline S-adenosyl-L-homocysteine Identifier CHEBI:57856 Charge 0 Formula C14H20N6O5S InChIKeyhelp_outline ZJUKTBDSGOFHSH-WFMPWKQPSA-N SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](CSCC[C@H]([NH3+])C([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 768 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:18521 | RHEA:18522 | RHEA:18523 | RHEA:18524 | |
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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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Enzymic O-methylation of isoliquiritigenin and licodione in alfalfa and licorice cultures.
Ichimura M., Furuno T., Takahashi T., Dixon R.A., Ayabe S.
S-Adenosyl-L-methionine (SAM): isoliquiritigenin (2',4,4'-trihydroxychalcone) 2'-O-methyltransferase (CHMT) of alfalfa (Medicago sativa) catalyses the formation of 4,4'-dihydroxy-2'-methoxychalcone, which is the most potent inducer of nodulation-genes of Rhizobium meliloti, the symbiont of alfalfa ... >> More
S-Adenosyl-L-methionine (SAM): isoliquiritigenin (2',4,4'-trihydroxychalcone) 2'-O-methyltransferase (CHMT) of alfalfa (Medicago sativa) catalyses the formation of 4,4'-dihydroxy-2'-methoxychalcone, which is the most potent inducer of nodulation-genes of Rhizobium meliloti, the symbiont of alfalfa which forms nitrogen-fixing nodules. SAM: licodione 2'-O-methyltransferase (LMT) is involved in the biosynthesis of a retrochalcone in cultured licorice (Glycyrrhiza echinata) cells and has been shown to be induced as a defence response of the cells. Because licodione exists in an equilibrium mixture of tautomeric 2',4,4',beta-tetrahydroxychalcone (major) and 1-(2,4-dihydroxyphenyl)-3-(4-hydroxyphenyl)-1,3-propanedione (minor), the apparent mode of action of both enzymes is very similar. In this study, cultured alfalfa cells were shown to exhibit rapid and transient increases in the extractable activities of both CHMT and LMT after treatment with yeast extract (YE). Treatment of solution-cultured alfalfa seedlings with YE also resulted in a similar induction of both CHMT and LMT activities in the roots, but no activity was detected in the shoots. These activities were attributed to a single gene product, the CHMT protein, as extracts of Escherichia coli transformed with the CHMT cDNA exhibited both CHMT and LMT activities. In contrast, in G. echinata cells, LMT was induced after YE treatment, but no CHMT activity was observed. It is concluded that alfalfa CHMT and licorice LMT are distinct enzymes, the former displaying the wider substrate specificity. << Less
Phytochemistry 44:991-995(1997) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.
Comments
Published in: "Biosynthesis of retrochalcone, echinatin: involvement of O-methyltransferase to licodione." Ayabe, S.-I., Yoshikawa, T., Kobayashi, M. and Furuya, T. Journal Phytochemistry 19, 2331-2336 (1980).