Enzymes
| UniProtKB help_outline | 1 proteins |
Reaction participants Show >> << Hide
- Name help_outline 15,16-epoxydolabrene Identifier CHEBI:141821 Charge 0 Formula C20H32O InChIKeyhelp_outline MDUIQYUVECBDRX-LBNFNQNDSA-N SMILEShelp_outline [C@@]12([C@]3([C@](CC[C@@]1(C[C@@](CC2)(C)C4CO4)[H])(C(CCC3)=C)C)[H])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 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 2,648 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
reduced [NADPH—hemoprotein reductase]
Identifier
RHEA-COMP:11964
Reactive part
help_outline
- Name help_outline FMNH2 Identifier CHEBI:57618 (Beilstein: 6258176) help_outline Charge -2 Formula C17H21N4O9P InChIKeyhelp_outline YTNIXZGTHTVJBW-SCRDCRAPSA-L SMILEShelp_outline Cc1cc2Nc3c([nH]c(=O)[nH]c3=O)N(C[C@H](O)[C@H](O)[C@H](O)COP([O-])([O-])=O)c2cc1C 2D coordinates Mol file for the small molecule Search links Involved in 771 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 3β-hydroxy-15,16-epoxydolabrene Identifier CHEBI:141820 Charge 0 Formula C20H32O2 InChIKeyhelp_outline JPGKQPWEFBWKDM-XVMBTQODSA-N SMILEShelp_outline [C@@]12([C@]3([C@](CC[C@@]1(C[C@@](CC2)(C)C4CO4)[H])(C([C@H](CC3)O)=C)C)[H])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 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 H2O Identifier CHEBI:15377 (Beilstein: 3587155; 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 6,048 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
oxidized [NADPH—hemoprotein reductase]
Identifier
RHEA-COMP:11965
Reactive part
help_outline
- Name help_outline FMN Identifier CHEBI:58210 Charge -3 Formula C17H18N4O9P InChIKeyhelp_outline ANKZYBDXHMZBDK-SCRDCRAPSA-K SMILEShelp_outline C12=NC([N-]C(C1=NC=3C(N2C[C@@H]([C@@H]([C@@H](COP(=O)([O-])[O-])O)O)O)=CC(=C(C3)C)C)=O)=O 2D coordinates Mol file for the small molecule Search links Involved in 781 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:57520 | RHEA:57521 | RHEA:57522 | RHEA:57523 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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| EC numbers help_outline | ||||
| MetaCyc help_outline |
Publications
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Discovery, biosynthesis and stress-related accumulation of dolabradiene-derived defenses in maize.
Mafu S., Ding Y., Murphy K.M., Yaacoobi O., Addison J.B., Wang Q., Shen Z., Briggs S.P., Bohlmann J., Castro-Falcon G., Hughes C.C., Betsiashvili M., Huffaker A., Schmelz E.A., Zerbe P.
Terpenoids are a major component of maize (<i>Zea mays</i>) chemical defenses that mediate responses to herbivores, pathogens, and other environmental challenges. Here, we describe the biosynthesis and elicited production of a class of maize diterpenoids, named dolabralexins. Dolabralexin biosynth ... >> More
Terpenoids are a major component of maize (<i>Zea mays</i>) chemical defenses that mediate responses to herbivores, pathogens, and other environmental challenges. Here, we describe the biosynthesis and elicited production of a class of maize diterpenoids, named dolabralexins. Dolabralexin biosynthesis involves the sequential activity of two diterpene synthases, <i>ENT</i>-COPALYL DIPHOSPHATE SYNTHASE (ZmAN2) and KAURENE SYNTHASE-LIKE4 (ZmKSL4). Together, ZmAN2 and ZmKSL4 form the diterpene hydrocarbon dolabradiene. In addition, we biochemically characterized a cytochrome P450 monooxygenase, ZmCYP71Z16, which catalyzes the oxygenation of dolabradiene to yield the epoxides 15,16-epoxydolabrene (epoxydolabrene) and 3β-hydroxy-15,16-epoxydolabrene (epoxydolabranol). The absence of dolabradiene and epoxydolabranol in <i>Zman2</i> mutants under elicited conditions confirmed the in vivo biosynthetic requirement of ZmAN2. Combined mass spectrometry and NMR experiments demonstrated that much of the epoxydolabranol is further converted into 3β,15,16-trihydroxydolabrene (trihydroxydolabrene). Metabolite profiling of field-grown maize root tissues indicated that dolabralexin biosynthesis is widespread across common maize cultivars, with trihydroxydolabrene as the predominant diterpenoid. Oxidative stress induced dolabralexin accumulation and transcript expression of <i>ZmAN2</i> and <i>ZmKSL4</i> in root tissues, and metabolite and transcript accumulation were up-regulated in response to elicitation with the fungal pathogens <i>Fusarium verticillioides</i> and <i>Fusarium graminearum</i> Consistently, epoxydolabranol significantly inhibited the growth of both pathogens in vitro at 10 µg mL<sup>-1</sup>, while trihydroxydolabrene-mediated inhibition was specific to <i>F</i><i>verticillioides</i> These findings suggest that dolabralexins have defense-related roles in maize stress interactions and expand the known chemical space of diterpenoid defenses as genetic targets for understanding and ultimately improving maize resilience. << Less
Plant Physiol. 176:2677-2690(2018) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.