Ontology mapping
- Primary identifier
-
CHEBI:16283 - Ontology label
- L-cystine
- kg-microbe node
CHEBI:16283
Nutritional roles
- Role
- NITROGEN_SOURCE
- Confidence
- 1.0
- Evidence
- Reference type
- DATABASE_ENTRY
- Reference text
- Imported from CultureMech pipeline
- Curator note
- Original role text: Nitrogen Source
Synonyms (13)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| Role: Nitrogen source; Properties: Organic compound, Simple component, Defined component | RAW_TEXT | CultureMech | |
| (2R,2'R)-3,3'-disulfanediylbis(2-aminopropanoic acid) | EXACT_SYNONYM | kg_microbe | |
| (R,R)-3,3'-dithiobis(2-aminopropanoic acid) | EXACT_SYNONYM | kg_microbe | |
| (R-(R*,R*))-3,3'-Dithiobis(2-aminopropanoic acid) | EXACT_SYNONYM | kg_microbe | |
| 3,3'-Dithiobis-L-alanine | EXACT_SYNONYM | kg_microbe | |
| E921 | EXACT_SYNONYM | kg_microbe | |
| L-Dicysteine | EXACT_SYNONYM | kg_microbe | |
| L-alpha-Diamino-beta-dithiolactic acid | EXACT_SYNONYM | kg_microbe | |
| beta,beta'-diamino-beta,beta'-dicarboxydiethyl disulfide | EXACT_SYNONYM | kg_microbe | |
| beta,beta'-dithiodialanine | EXACT_SYNONYM | kg_microbe | |
| bis(beta-amino-beta-carboxyethyl) disulfide | EXACT_SYNONYM | kg_microbe | |
| oxidized L-cysteine | EXACT_SYNONYM | kg_microbe | |
| Role: Nitrogen source; Properties: Defined component, Simple component, Organic compound | RAW_TEXT | CultureMech |
Chemical properties
- Cas rn
- 56-89-3
- Data source
- PubChem API
- Retrieval date
- 2026-04-05T19:52:38.000782+00:00
- Molecular formula
- C6H12N2O4S2
- Inchi
- InChI=1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(11)12/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12)/t3-,4-/m0/s1
- Smiles
- N[C@@H](CSSC[C@H](N)C(=O)O)C(=O)O
Evidence (1)
DATABASE_MATCH
via CultureMech
Imported from CultureMech pipeline, quality=DIRECT_MATCH
Occurrence statistics
- Total occurrences
- 19
- Distinct media
- 19
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 |
| 2026-04-05T19:52:38.000818+00:00 | fetch_cas_rn_from_pubchem | ADDED_CAS_RN | MAPPED | Added CAS-RN:56-89-3 from PubChem API via name lookup (L-Cystine) |
| 2026-04-09T00:32:50.689620+00:00 | enrich_mim_cas_rn_batch | CAS_RN_ADDED | MAPPED | Added CAS-RN 56-89-3 from PubChem (via CHEBI:16283) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 11 synonyms from kg-microbe P4.4 enrichment: (2R,2'R)-3,3'-disulfanediylbis(2-aminopropanoic acid), (R,R)-3,3'-dithiobis(2-aminopropanoic acid), (R-(R*,R*))-3,3'-Dithiobis(2-aminopropanoic acid), 3,3'-Dithiobis-L-alanine, E921, ... (6 more) |
| 2026-04-19T07:39:23.955331+00:00 | audit_mim_merge | MERGED_FROM_DUPLICATES | MAPPED | Absorbed 1 duplicate MIM record(s) into this one: L-cystine_2.yaml. Synonyms, curation_history, and occurrence counts were unioned/summed; winner selected by highest occurrence count with preferred_term readability tie-break. |
| 2026-05-01T07:35:34.341677+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:30.348534+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=C6H12N2O4S2; inchi=InChI=1S/C6H12N2O4S2/c7-3(5(9)10)1-13-14-2-4(8)6(1; smiles=N[C@@H](CSSC[C@H](N)C(=O)O)C(=O)O | |
| 2026-05-02T03:12:15.500841+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-05-29T23:35:36.111626+00:00 | extract_roles_from_synonyms | ANNOTATED | Added media role: NITROGEN_SOURCE (confidence: 1.00) | |
| 2026-06-09T05:23:46.784800+00:00 | correct_stale_ontology_labels.py | CORRECTED | ontology_label 'L-Cystine' -> 'L-cystine': synced to canonical CHEBI label (preferred_term 'L-Cystine' unchanged). | |
| 2026-07-20T00:00:00+00:00 | migrate_media_roles_to_facets | ANNOTATED | Migrated legacy media_roles to role facets (#128): NITROGEN_SOURCE -> nutritional_roles.NITROGEN_SOURCE | |
| 2026-08-27T03:16:39.519134+00:00 | refresh_occurrence_statistics | CORRECTED | occurrence_statistics 8/8 -> 19/19 (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] |