Ontology mapping
- Primary identifier
-
CHEBI:27570 - Ontology label
- histidine
- kg-microbe node
CHEBI:27570
Nutritional roles
- Role
- AMINO_ACID_SOURCE
- Confidence
- 0.7
- Evidence
- Reference type
- COMPUTATIONAL_PREDICTION
- Reference text
- Inferred from CHEBI ancestry: subclass/has_role of CHEBI:33709 (amino acid)
- Curator note
- Provisional role inferred from CHEBI is_a/has_role closure; review recommended.
Synonyms (4)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| 2-amino-3-(1H-imidazol-4-yl)propanoic acid | EXACT_SYNONYM | kg_microbe | |
| Histidin | EXACT_SYNONYM | kg_microbe | |
| alpha-Amino-1H-imidazole-4-propionic acid | EXACT_SYNONYM | kg_microbe | |
| histidina | EXACT_SYNONYM | kg_microbe |
Chemical properties
- Cas rn
- 4998-57-6
- Data source
- PubChem API
- Retrieval date
- 2026-04-05T19:51:55.431564+00:00
- Molecular formula
- C6H9N3O2
- Inchi
- InChI=1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)
- Smiles
- NC(Cc1cncn1)C(=O)O
Evidence (1)
DATABASE_MATCH
via CultureMech
Imported from CultureMech pipeline, quality=DIRECT_MATCH
Occurrence statistics
- Total occurrences
- 3
- Distinct media
- 3
Curation history
| Timestamp | Curator | Action | New status | Changes |
|---|---|---|---|---|
| 2026-03-09T06:54:18.022301+00:00 | import_from_culturemech | IMPORTED | MAPPED | Initial import from CultureMech pipeline |
| 2026-04-05T19:51:55.431619+00:00 | fetch_cas_rn_from_pubchem | ADDED_CAS_RN | MAPPED | Added CAS-RN:4998-57-6 from PubChem API via name lookup (DL-Histidine) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 4 synonyms from kg-microbe P4.4 enrichment: 2-amino-3-(1H-imidazol-4-yl)propanoic acid, Histidin, alpha-Amino-1H-imidazole-4-propionic acid, histidina |
| 2026-05-01T07:35:33.354309+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:29.325463+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=C6H9N3O2; inchi=InChI=1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,; smiles=NC(Cc1cncn1)C(=O)O | |
| 2026-05-02T03:12:14.133824+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-05-30T00:34:39.394078+00:00 | infer_roles_from_chebi_ancestry | ANNOTATED | Added media role: AMINO_ACID_SOURCE (confidence: 0.70) | |
| 2026-06-09T05:23:46.758202+00:00 | correct_stale_ontology_labels.py | CORRECTED | ontology_label 'DL-Histidine' -> 'histidine': synced to canonical CHEBI label (preferred_term 'DL-Histidine' unchanged). | |
| 2026-07-20T00:00:00+00:00 | migrate_media_roles_to_facets | ANNOTATED | Migrated legacy media_roles to role facets (#128): AMINO_ACID_SOURCE -> nutritional_roles.AMINO_ACID_SOURCE | |
| 2026-08-10T00:00:00+00:00 | regrade_synonym_matches | REGRADED_EXACT_TO_SYNONYM | mapping_quality EXACT_MATCH -> SYNONYM_MATCH (#317). The record's label does not equal the term's primary label 'histidine'; it matches the ChEBI synonym 'histidina' on CHEBI:27570. The schema defines EXACT_MATCH as a direct match to the term and SYNONYM_MATCH as a match to a known synonym, so the recorded grade overstated. ontology_id is unchanged — the term is correct. The SSSOM predicate is unaffected (both grades emit skos:exactMatch). | |
| 2026-08-27T03:16:39.518768+00:00 | refresh_occurrence_statistics | CORRECTED | occurrence_statistics 2/2 -> 3/3 (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] |