Enzymes
| UniProtKB help_outline | 1 proteins |
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- Name help_outline 7-demethylsiderin Identifier CHEBI:145991 (CAS: 41680-12-0) help_outline Charge 0 Formula C11H10O4 InChIKeyhelp_outline UMLNUFLSRYJZFA-UHFFFAOYSA-N SMILEShelp_outline C1(=CC(=CC2=C1C(=CC(O2)=O)OC)O)C 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 NADPH Identifier CHEBI:57783 (Beilstein: 10411862) help_outline Charge -4 Formula C21H26N7O17P3 InChIKeyhelp_outline ACFIXJIJDZMPPO-NNYOXOHSSA-J SMILEShelp_outline NC(=O)C1=CN(C=CC1)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](OP([O-])([O-])=O)[C@@H]2O)n2cnc3c(N)ncnc23)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,288 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline O2 Identifier CHEBI:15379 (CAS: 7782-44-7) help_outline Charge 0 Formula O2 InChIKeyhelp_outline MYMOFIZGZYHOMD-UHFFFAOYSA-N SMILEShelp_outline O=O 2D coordinates Mol file for the small molecule Search links Involved in 2,727 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline orlandin Identifier CHEBI:145992 Charge -1 Formula C22H17O8 InChIKeyhelp_outline SSGXAFNGBRRLQM-UHFFFAOYSA-M SMILEShelp_outline C1(=CC(=C(C2=C1C(=CC(O2)=O)OC)C3=C(C=C(C4=C3OC(C=C4OC)=O)C)[O-])O)C 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 NADP+ Identifier CHEBI:58349 Charge -3 Formula C21H25N7O17P3 InChIKeyhelp_outline XJLXINKUBYWONI-NNYOXOHSSA-K SMILEShelp_outline NC(=O)c1ccc[n+](c1)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OC[C@H]2O[C@H]([C@H](OP([O-])([O-])=O)[C@@H]2O)n2cnc3c(N)ncnc23)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,294 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,264 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:62800 | RHEA:62801 | RHEA:62802 | RHEA:62803 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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Cytochrome P450-catalyzed regio- and stereoselective phenol coupling of fungal natural products.
Mazzaferro L.S., Huettel W., Fries A., Mueller M.
For almost 100 years, phenoxy radical coupling has been known to proceed in nature. Because of the linkage of their molecular halves (regiochemistry) and the configuration of the biaryl axis (stereochemistry), biaryls are notoriously difficult to synthesize. Whereas the intramolecular enzymatic co ... >> More
For almost 100 years, phenoxy radical coupling has been known to proceed in nature. Because of the linkage of their molecular halves (regiochemistry) and the configuration of the biaryl axis (stereochemistry), biaryls are notoriously difficult to synthesize. Whereas the intramolecular enzymatic coupling has been elucidated in detail for several examples, the bimolecular intermolecular coupling could not be assigned to one single enzyme in the biosynthesis of axially chiral biaryls. As these transformations often take place regio- and stereoselectively, enzyme-catalyzed control is reasonable. We now report the identification and expression of fungal cytochrome P450 enzymes that catalyze regio- and stereoselective intermolecular phenol couplings. The cytochrome P450 enzyme KtnC from the kotanin biosynthetic pathway of Aspergillus niger was expressed in Saccharomyces cerevisiae. The recombinant cells catalyzed the coupling of the monomeric coumarin 7-demethylsiderin both regio- and stereoselectively to the 8,8'-dimer P-orlandin, a precursor of kotanin. The sequence information obtained from the kotanin biosynthetic gene cluster was used to identify in silico a similar gene cluster in the genome of Emericella desertorum, a producer of desertorin A, the 6,8'-regioisomer of orlandin. The cytochrome P450 enzyme DesC was also expressed in S. cerevisiae and was found to regio- and stereoselectively catalyze the coupling of 7-demethylsiderin to M-desertorin A. Our results show that fungi use highly specific cytochrome P450 enzymes for regio- and stereoselective phenol coupling. The enzymatic activities of KtnC and DesC are relevant for an understanding of the mechanism of this important biosynthetic step. These results suggest that bimolecular phenoxy radical couplings in nature can be catalyzed by phenol-coupling P450 heme enzymes, which might also apply to the plant kingdom. << Less
J. Am. Chem. Soc. 137:12289-12295(2015) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.