nivalenol

naturalproductmech:mibig-dcf873f38b MINTED SEEDED toxin

Grounding review: No 3-star ChEBI entry shares this structure, so the record keeps a content-hashed identifier.

What these status tags mean

Curation status describes a workflow state. SEEDED means the record entered through the source-seeding workflow; it does not imply that no later curation occurred. PROPOSED marks an addition awaiting review; REVIEWED records curator sign-off on identity, structure, filing class and producer claims; DEPRECATED retains a superseded or out-of-scope record. These are workflow decisions, not independently verified human review. Agent-assisted contributions may appear in the record history.

Grounding describes the identifier mapping: EXACT uses an ontology identity asserted by the source; MINTED keeps a local identifier when no defensible ontology identity is available; REVIEW_NEEDED flags an exact structure whose ontology identity needs adjudication. The grounding note retains any unresolved alternatives. These tags do not establish the strength of producer or activity evidence.

Structure

Standard InChIKey	UKOTXHQERFPCBU-XBXCNEFVSA-N
SMILES	CC1=C[C@H]2O[C@@H]3[C@H](O)[C@@H](O)[C@](C)([C@@]2(CO)[C@H](O)C1=O)[C@]31CO1
Stereochemistry	fully defined
Cross-references	chembl:CHEMBL509655, pubchem:5284433

Filing pathway

Terpenoids — computed by NPClassifier npclassifier.gnps2.org@2026-09-07, which is why it is pinned rather than recomputed. The gene cluster's asserted class is terpene, from MIBiG.

Producer organisms 1

A claim that this taxon makes the compound. The basis says what the evidence addressed — a knockout and a database assertion are not the same claim.

Taxon	Basis	Cluster	Evidence
Fusarium graminearum NCBITaxon:5518	SOURCE_ASSERTION	mibig:BGC0000930	DOI:10.1128/aem.68.5.2148-2154.2002

Occurrences 7

Somebody found the compound in this organism and cited it. That is not a claim that the organism makes it, and nothing here promotes one to the other.

Taxon	Source	Reference
Fusarium culmorum NCBITaxon:5516	LOTUS	DOI:10.1128/AEM.56.10.3047-3051.1990
Fusarium crookwellense NCBITaxon:56641	LOTUS	DOI:10.1128/AEM.54.8.2147-2148.1988
Fusarium tricinctum NCBITaxon:61284	LOTUS	DOI:10.1128/AEM.48.4.857-858.1984
Fusarium graminearum NCBITaxon:5518	LOTUS	DOI:10.1007/BF00596678
Fusarium graminearum NCBITaxon:5518	LOTUS	DOI:10.1007/BF00629768
Fusarium graminearum NCBITaxon:5518	LOTUS	DOI:10.1080/00275514.1988.12025747
Fusarium graminearum NCBITaxon:5518	LOTUS	DOI:10.2307/3807578

Biosynthetic gene clusters 1

Accession	Host	Locus evidence	Genome
mibig:BGC0000930	Fusarium graminearum NCBITaxon:5518	CLUSTER_UNSTATED	genbank:AF336365.2

A locus claim and a taxon claim are different questions. Heterologous expression settles the first and leaves the second where the isolation report left it.

Mechanism & Biosynthesis Overview

Bioactivities 1

Entries preserve source qualifiers, targets and evidence. Repeated assay names or values are not independent replications; inspect source detail for differences.

Assay	Result	Target enzyme	Source detail
CCRIS mutagenicity studies	ACTIVE	Not recorded	pubchem.aid:1259407 assay CCRIS mutagenicity studies evidence reference pubchem.aid:1259407 evidence type DATABASE_ASSERTION notes PubChem BioAssay AID 1259407, deposited by 22070; assay type Other. call ACTIVE activity class TOXIN

Explore across X-Mech

AntibioticMech (nivalenol) ↗ MediaIngredientMech (naturalproductmech:mibig-dcf873f38b) ↗ TaxonMech: Fusarium graminearum (NCBITaxon:5518) ↗ PathwayMech (mibig:BGC0000930) ↗

Provenance

Source concept	Source	Version
BGC0000930	MIBIG	4

This page is generated from data/natural_products/terpenoids/nivalenol.yaml, which is generated from the committed inventories. Neither is edited by hand.