Ontology mapping
- Primary identifier
-
CHEBI:16857 - Ontology label
- L-threonine
- kg-microbe node
CHEBI:16857
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 (9)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| Cross-references: KEGG:thr-L | RAW_TEXT | CultureMech | |
| (2S)-threonine | EXACT_SYNONYM | kg_microbe | |
| (2S,3R)-(-)-Threonine | EXACT_SYNONYM | kg_microbe | |
| (2S,3R)-2-amino-3-hydroxybutanoic acid | EXACT_SYNONYM | kg_microbe | |
| 2-Amino-3-hydroxybutyric acid | EXACT_SYNONYM | kg_microbe | |
| L-(-)-Threonine | EXACT_SYNONYM | kg_microbe | |
| L-2-Amino-3-hydroxybutyric acid | EXACT_SYNONYM | kg_microbe | |
| L-Threonin | EXACT_SYNONYM | kg_microbe | |
| L-alpha-amino-beta-hydroxybutyric acid | EXACT_SYNONYM | kg_microbe |
Chemical properties
- Cas rn
- 72-19-5
- Data source
- PubChem API
- Retrieval date
- 2026-04-05T19:52:44.579732+00:00
- Molecular formula
- C4H9NO3
- Inchi
- InChI=1S/C4H9NO3/c1-2(6)3(5)4(7)8/h2-3,6H,5H2,1H3,(H,7,8)/t2-,3+/m1/s1
- Smiles
- C[C@@H](O)[C@H](N)C(=O)O
Evidence (1)
DATABASE_MATCH
via CultureMech
Imported from CultureMech pipeline, quality=DIRECT_MATCH
Occurrence statistics
- Total occurrences
- 89
- Distinct media
- 89
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 |
| 2026-04-05T19:52:44.579773+00:00 | fetch_cas_rn_from_pubchem | ADDED_CAS_RN | MAPPED | Added CAS-RN:72-19-5 from PubChem API via name lookup (L-Threonine) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 8 synonyms from kg-microbe P4.4 enrichment: (2S)-threonine, (2S,3R)-(-)-Threonine, (2S,3R)-2-amino-3-hydroxybutanoic acid, 2-Amino-3-hydroxybutyric acid, L-(-)-Threonine, ... (3 more) |
| 2026-05-01T07:35:34.408715+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:30.423012+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=C4H9NO3; inchi=InChI=1S/C4H9NO3/c1-2(6)3(5)4(7)8/h2-3,6H,5H2,1H3,; smiles=C[C@@H](O)[C@H](N)C(=O)O | |
| 2026-05-02T03:12:15.590066+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-05-30T00:34:39.496031+00:00 | infer_roles_from_chebi_ancestry | ANNOTATED | Added media role: AMINO_ACID_SOURCE (confidence: 0.70) | |
| 2026-06-09T05:23:46.786126+00:00 | correct_stale_ontology_labels.py | CORRECTED | ontology_label 'L-Threonine' -> 'L-threonine': synced to canonical CHEBI label (preferred_term 'L-Threonine' 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 | |
| 2026-08-27T03:16:39.519174+00:00 | refresh_occurrence_statistics | CORRECTED | occurrence_statistics 48/48 -> 89/89 (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] |