erdasporine B
CHEBI:156314 EXACT SEEDED antibacterial
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REVIEWED records curator sign-off on identity, structure, filing class and producer claims; DEPRECATED retains a superseded or out-of-scope record.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.
An organic heterohexacyclic compound that is 12,13-dihydro-6H-indolo[2,3-a]pyrrolo[3,4-c]carbazole in which the hydrogen at position 5 is substituted by a methoxycarbonyl group. It is synthesized by a gene cluster found in environmental DNA and exhibits cytotoxic activity against human HCT116 cancer cells and Staphylococcus aureus.
Structure
| Standard InChIKey | POAWNROCPSHGIZ-UHFFFAOYSA-N |
|---|---|
| SMILES | COC(=O)C1=C2C(=CN1)C3=C(C4=C2C5=CC=CC=C5N4)NC6=CC=CC=C63 |
| Stereochemistry | fully defined |
| Cross-references | pubchem:102584106 |
Filing pathway
Alkaloids — 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 other, from MIBiG.
Producer organisms 0
None. The compound has a characterized gene cluster whose host NCBI does not name, which for an uncultured symbiont is the honest state — see the discussion below.
Occurrences 0
None cited.
Biosynthetic gene clusters 1
| Accession | Host | Locus evidence | Genome |
|---|---|---|---|
| mibig:BGC0001336 | not named | CLUSTER_DEMONSTRATED | genbank:KF551865.1 |
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
Elsewhere in the fleet
- AntibioticMech — CHEBI:156314 (same structure, same inchikey)
Explore across X-Mech
Open questions 1
unnamed-producer — No producer claim is written from BGC0001336, which gives NCBITaxon:77133 (uncultured bacterium — shared by every unplaced bacterium), because the taxon names no single organism. The cluster is kept: a characterized locus is an origin assertion whether or not its host has a name, and for a compound from an uncultured symbiont that is the honest state. Name the producer if the primary literature does.
Provenance
| Source concept | Source | Version |
|---|---|---|
| BGC0001336 | MIBIG | 5 |
| CHEBI:156314 | CHEBI | 3-star |
This page is generated from data/natural_products/alkaloids/erdasporine-b.yaml, which is generated from the committed inventories. Neither is edited by hand.