agnestin A
CHEBI:152052 EXACT SEEDED
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REVIEWED records curator sign-off on identity, structure, filing class and producer claims; DEPRECATED retains a superseded or out-of-scope record.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.
A member of the class of xanthones that is 1,2-dihydro-9H-xanthen-9-one substituted by a carboxy group at position 1R, hydroxy groups at positions 2R and 8, and a methyl group at position 3. It has been isolated from the fungus Paecilomyces variotti.
Structure
| Standard InChIKey | PFGOJDXPCPCBJM-OLZOCXBDSA-N |
|---|---|
| SMILES | CC1=CC2=C(C(=O)C3=C(C=CC=C3O)O2)[C@@H](C(=O)O)[C@H]1O |
| Stereochemistry | fully defined |
| Cross-references | npatlas:NPA026367, pubchem:146672232 |
Filing pathway
Polyketides — 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 pks, 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 |
|---|---|---|---|
| Paecilomyces divaricatus NCBITaxon:644132 |
BGC_CHARACTERIZED | mibig:BGC0002062 | PMID:30746079 |
Occurrences 2
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 |
|---|---|---|
| Paecilomyces variotii NCBITaxon:264951 |
LOTUS | DOI:10.1039/C8SC03778G |
| Paecilomyces variotti NCBITaxon:264951 |
CHEBI | PMID:30746079 |
Biosynthetic gene clusters 1
| Accession | Host | Locus evidence | Genome |
|---|---|---|---|
| mibig:BGC0002062 | Paecilomyces divaricatus NCBITaxon:644132 |
CLUSTER_DEMONSTRATED | genbank:MH898872.1 |
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
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Provenance
| Source concept | Source | Version |
|---|---|---|
| BGC0002062 | MIBIG | 2 |
| CHEBI:152052 | CHEBI | 3-star |
This page is generated from data/natural_products/polyketides/agnestin-a.yaml, which is generated from the committed inventories. Neither is edited by hand.