Enzymes
| UniProtKB help_outline | 2 proteins |
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- Name help_outline (4S,8R)-2,13,16,20-tetrahydroxy-7,9-dioxapentacyclo[10.8.0.03,10.04,8.014,19]icosa-1(12),2,5,10,13,16,19-heptaen-18-one Identifier CHEBI:150859 Charge 0 Formula C18H12O7 InChIKeyhelp_outline DWIQZFOGDHNQGC-ULCDLSAGSA-N SMILEShelp_outline C1(C=C(CC=2C1=C(C=3C(=C4[C@@]5(C=CO[C@@]5(OC4=CC3C2O)[H])[H])O)O)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 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 1,329 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 9,932 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline (4S,8R,16R)-2,13,16,20-tetrahydroxy-7,9-dioxapentacyclo[10.8.0.03,10.04,8.014,19]icosa-1(12),2,5,10,13,19-hexaen-18-one Identifier CHEBI:150860 Charge 0 Formula C18H14O7 InChIKeyhelp_outline QATMRPSCQAYYCA-OIROLDLGSA-N SMILEShelp_outline C1(C[C@@H](CC=2C1=C(C=3C(=C4[C@@]5(C=CO[C@@]5(OC4=CC3C2O)[H])[H])O)O)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 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 1,335 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:64296 | RHEA:64297 | RHEA:64298 | RHEA:64299 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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New insights into the conversion of versicolorin A in the biosynthesis of aflatoxin B1.
Conradt D., Schaetzle M.A., Haas J., Townsend C.A., Mueller M.
A crucial and enigmatic step in the complex biosynthesis of aflatoxin B1 is the oxidative rearrangement of versicolorin A to demethylsterigmatocystin. This step is thought to proceed by an oxidation-reduction-oxidation sequence, in which the NADPH-dependent oxidoreductase AflM catalyzes the enclos ... >> More
A crucial and enigmatic step in the complex biosynthesis of aflatoxin B1 is the oxidative rearrangement of versicolorin A to demethylsterigmatocystin. This step is thought to proceed by an oxidation-reduction-oxidation sequence, in which the NADPH-dependent oxidoreductase AflM catalyzes the enclosed reduction step. AflM from Aspergillus parasiticus, after heterologous production in E. coli and purification, however, catalyzed the reduction of the hydroquinoid form of the starting compound versicolorin A (25% conversion) to a so far unknown product of aflatoxin biosynthesis. The asymmetric reduction of emodin hydroquinone to (R)-3,8,9,10-tetrahydroxy-6-methyl-3,4-dihydroanthracen-1(2H)-one (up to 82% for AflM) has also been observed in previous studies using MdpC from Aspergillus nidulans (monodictyphenone biosynthetic gene cluster). The first (nonenzymatic) reduction of emodin to emodin hydroquinone, for example with sodium dithionite, is obligatory for the enzymatic reduction by AflM or MdpC. These results imply an unprecedented role of AflM in the complex enzymatic network of aflatoxin biosynthesis. << Less
J. Am. Chem. Soc. 137:10867-10869(2015) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.