Ontology mapping
- Primary identifier
-
CHEBI:17029 - Ontology label
- chitin
Nutritional roles
- Role
- CARBON_SOURCE
- Confidence
- 0.8
- Evidence
- Reference type
- COMPUTATIONAL_PREDICTION
- Reference text
- Inferred from curated media-role name pattern
- Curator note
- Provisional role from a curated name-pattern rule; review recommended.
Synonyms (1)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| (1->4)-2-acetamido-2-deoxy-beta-D-glucan | EXACT_SYNONYM | chebi_synonym_review |
Rejected enrichment labels (1)
Provenance-only candidates: these are not synonyms and do not resolve to this record.
| Rejected label | Disposition | Source | Occurrences |
|---|---|---|---|
| hydrolysis: crab shell chitin | REJECTED_LABEL | sssom_other_backfill |
Chemical properties
- Molecular formula
- (C8H13NO5)n.H2O
- Inchi
- InChI=1S/C8H15NO6/c1-3(11)9-5-7(13)6(12)4(2-10)15-8(5)14/h4-8,10,12-14H,2H2,1H3,(H,9,11)/t4-,5-,6-,7-,8-/m1/s1
- Smiles
- [H]O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1NC(C)=O
- Data source
- CHEBI sqlite (oaklib)
Evidence (1)
LEXICAL_MATCH
via kgm-metatraits
Imported from kgm-metatraits via source-preset. source_id=kgm.metatraits.special:chitin;
Occurrence statistics
- Total occurrences
- 12
- Distinct media
- 12
Curation history
| Timestamp | Curator | Action | New status | Changes |
|---|---|---|---|---|
| 2026-04-30T20:14:01.918670+00:00 | audit_import_ingredients[kgm-metatraits] | CREATED_FROM_INGREDIENT_IMPORT | MAPPED | Imported from kgm-metatraits via source-preset. source_id=kgm.metatraits.special:chitin; |
| 2026-05-01T07:35:32.749800+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:28.582541+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=(C8H13NO5)n.H2O; inchi=InChI=1S/C8H15NO6/c1-3(11)9-5-7(13)6(12)4(2-10)15-; smiles=[H]O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1NC(C)= | |
| 2026-05-02T03:12:13.314282+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-06-03T02:06:01.737167+00:00 | infer_roles_from_name_lists | ANNOTATED | Added media role: CARBON_SOURCE (confidence: 0.80) | |
| 2026-07-20T00:00:00+00:00 | migrate_media_roles_to_facets | ANNOTATED | Migrated legacy media_roles to role facets (#128): CARBON_SOURCE -> nutritional_roles.CARBON_SOURCE | |
| 2026-08-27T03:16:39.518554+00:00 | refresh_occurrence_statistics | CORRECTED | occurrence_statistics 0/0 -> 12/12 (media_count/total_occurrences), derived from distinct CultureMech recipe ids in the #337 occurrence table. The prior values came from the importer retired in #453, whose media_count counted a list truncated to 50 examples (#449). [source=ingredient_occurrences.tsv culturemech_rev=15a4da5c08 rows=194137 distinct_recipes=15257] | |
| 2026-09-02T17:40:44.716277+00:00 | claude_sssom_surface_form_backfill | ADDED_SYNONYMS | Recovered 1 surface form(s) that the published SSSOM `other` carried but no curated record did, so a rebuild would have dropped them from KGX: 'hydrolysis: crab shell chitin'. Tokens already present on the kg-microbe ontology node were left out as redundant (#520). | |
| 2026-09-22T06:14:49.563933+00:00 | claude LLM | REJECTED_TRAIT_SYNONYMS | Retyped activity/assay phrases as provenance-only REJECTED_LABEL because they describe a process or organism trait, not an ingredient name (#703): 'hydrolysis: crab shell chitin'. Preserved original text and source metadata. No identity, mapping, role, or remaining-synonym claim was adjudicated. |