{"id":"e537b75c-6973-5157-9e89-cf7af93ba2b4","stable_key":"d17caac5-7018-5ca8-9e96-95afeb384bc4:pectin-competition-vulgatus","predicate":"outcompetes","statement":"L. eligens DSM3376 outcompeted P. vulgatus DSM1447 in the tested pectin co-cultures.","claim_class":"mechanistic","status":"source_derived_draft","evidence_grade":"ungraded","direction":"context_dependent","is_public":true,"mechanism_event_id":"585c0a37-ecaa-529c-8e57-b1ead82b3768","mechanism_event_label":"Sharing the same food does not mean all pectin users increase together.","subject":{"id":"8211ed2b-e031-58d7-9ec2-486631a0c760","slug":"lachnospira-eligens-dsm3376","display_name":"Lachnospira eligens DSM 3376","entity_type_key":"organism"},"object":{"id":"16cbf3a5-e58e-543d-b316-b58178f49592","slug":"phocaeicola-vulgatus-dsm1447","display_name":"Phocaeicola vulgatus DSM 1447","entity_type_key":"organism"},"evidence_count":1,"mechanism_event":{"id":"585c0a37-ecaa-529c-8e57-b1ead82b3768","stable_key":"d17caac5-7018-5ca8-9e96-95afeb384bc4:pectin-competition-vulgatus-event","event_type":"biochemical_relationship","label":"Sharing the same food does not mean all pectin users increase together.","description":"L. eligens DSM3376 outcompeted P. vulgatus DSM1447 in the tested pectin co-cultures.","status":"provisional","compartment":null,"participants":[{"entity":{"id":"8211ed2b-e031-58d7-9ec2-486631a0c760","slug":"lachnospira-eligens-dsm3376","display_name":"Lachnospira eligens DSM 3376","entity_type_key":"organism"},"role":"subject","stoichiometry":null,"state_label":"","sequence_order":0,"notes":""},{"entity":{"id":"16cbf3a5-e58e-543d-b316-b58178f49592","slug":"phocaeicola-vulgatus-dsm1447","display_name":"Phocaeicola vulgatus DSM 1447","entity_type_key":"organism"},"role":"target","stoichiometry":null,"state_label":"","sequence_order":1,"notes":""}]},"contexts":[{"dimension":"evidence_span","value_text":"{\"source_cache\": \"artifacts/pectin-research/40439696.abstract.txt\", \"locator\": \"Primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"40b7f781968c7c518a5e367801c9d2b71aee4cf5c57d04bc51178e57c4bc8bf8\", \"start_char\": 0, \"end_char\": 1667, \"text_sha256\": \"40b7f781968c7c518a5e367801c9d2b71aee4cf5c57d04bc51178e57c4bc8bf8\"}","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"experimental_model","value_text":"23 human gut bacterial isolates and synthetic co-cultures","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"exposure","value_text":"Pectins from different plant sources","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"limitations","value_text":"Growth and inferred cross-feeding do not measure clinical benefit; strain competition depends on culture and substrate.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"nutrient_topic","value_text":"Pectin research collection; topical membership is not evidence of a direct dietary effect.","comparator":null,"unit":null,"notes":"","entity":{"slug":"pectin","display_name":"Pectin, structurally heterogeneous plant polysaccharides","entity_type_key":"chemical_species"}},{"dimension":"organism","value_text":"Specified bacterial strains isolated from humans","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"plain_language","value_text":"Sharing the same food does not mean all pectin users increase together.","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"primary_references","value_text":"[pectin-p40439696] Roles of human colonic bacteria in pectin utilization and associated cross-feeding networks revealed using synthetic co-cultures. (2025). https://pubmed.ncbi.nlm.nih.gov/40439696/ DOI: 10.1099/mic.0.001559","comparator":null,"unit":null,"notes":"","entity":null},{"dimension":"tissue_or_cell_type","value_text":"Anaerobic culture","comparator":null,"unit":null,"notes":"","entity":null}],"evidence":[{"id":"fb9fc7b7-f225-53bd-96df-cae9ed654ddf","evidence_kind":"source_excerpt","locator":"Lines 945-956","start_line":945,"end_line":956,"excerpt":"### pectin-competition-vulgatus\nL. eligens DSM3376 outcompeted P. vulgatus DSM1447 in the tested pectin co-cultures.\nCondition category: normal\nnutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect.\nplain_language: Sharing the same food does not mean all pectin users increase together.\norganism: Specified bacterial strains isolated from humans\ntissue_or_cell_type: Anaerobic culture\nexperimental_model: 23 human gut bacterial isolates and synthetic co-cultures\nlimitations: Growth and inferred cross-feeding do not measure clinical benefit; strain competition depends on culture and substrate.\nexposure: Pectins from different plant sources\nevidence_span: {\"source_cache\": \"artifacts/pectin-research/40439696.abstract.txt\", \"locator\": \"Primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"40b7f781968c7c518a5e367801c9d2b71aee4cf5c57d04bc51178e57c4bc8bf8\", \"start_char\": 0, \"end_char\": 1667, \"text_sha256\": \"40b7f781968c7c518a5e367801c9d2b71aee4cf5c57d04bc51178e57c4bc8bf8\"}\n[pectin-p40439696] Roles of human colonic bacteria in pectin utilization and associated cross-feeding networks revealed using synthetic co-cultures. 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