Component
Bacteroides thetaiotaomicron BT4174, unsaturated RG-I hydrolase
Bacteroides thetaiotaomicron BT4174, unsaturated RG-I hydrolase. Species, exposure and limitations are retained in each linked claim.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What it acts on
BT4174 processes the unsaturated terminal residue in RG-I fragments of degree of polymerization at least four.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/pectin-research/29255254.fulltext.txt", "locator": "Primary full-text span; zero-based, end-exclusive Unicode character offsets", "file_sha256": "514f1ffe2924a1c555e3ecea968fb7260d0f55aa1b22c057697dbc59676c5796", "start_char": 13259, "end_char": 14426, "text_sha256": "2e55a6b2c9c29b9f82f572f66f439f63e58c9619942be2ed1b35ee8e7a193938"}
- experimental_model
- Purified enzymes, structural biology and targeted bacterial deletions
- exposure
- Defined pectic substrates; growth media and recombinant-enzyme assays
- limitations
- Bacterial machinery, not human digestive enzymes. Gene dependence is substrate- and strain-specific; no clinical microbiome threshold follows.
- nutrient_topic
- Pectin research collection; topical membership is not evidence of a direct dietary effect. · Pectin, structurally heterogeneous plant polysaccharides
- organism
- Bacteroides thetaiotaomicron
- plain_language
- Longer fragments use a different enzyme.
- primary_references
- [pectin-p29255254] Dietary pectic glycans are degraded by coordinated enzyme pathways in human colonic Bacteroides. (2018). https://pubmed.ncbi.nlm.nih.gov/29255254/ DOI: 10.1038/s41564-017-0079-1
- tissue_or_cell_type
- Cell surface and periplasm
Pectin: metabolism, signaling and nutrient connections (2026-09-17) · lines 191–202
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Purified enzymes, structural biology and targeted bacterial deletions · source_derived_draft · unverified_draft
### pectin-rgi-long BT4174 processes the unsaturated terminal residue in RG-I fragments of degree of polymerization at least four. Condition category: normal nutrient_topic: Pectin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Longer fragments use a different enzyme. organism: Bacteroides thetaiotaomicron tissue_or_cell_type: Cell surface and periplasm experimental_model: Purified enzymes, structural biology and targeted bacterial deletions limitations: Bacterial machinery, not human digestive enzymes. Gene dependence is substrate- and strain-specific; no clinical microbiome threshold follows. exposure: Defined pectic substrates; growth media and recombinant-enzyme assays evidence_span: {"source_cache": "artifacts/pectin-research/29255254.fulltext.txt", "locator": "Primary full-text span; zero-based, end-exclusive Unicode character offsets", "file_sha256": "514f1ffe2924a1c555e3ecea968fb7260d0f55aa1b22c057697dbc59676c5796", "start_char": 13259, "end_char": 14426, "text_sha256": "2e55a6b2c9c29b9f82f572f66f439f63e58c9619942be2ed1b35ee8e7a193938"} [pectin-p29255254] Dietary pectic glycans are degraded by coordinated enzyme pathways in human colonic Bacteroides. (2018). https://pubmed.ncbi.nlm.nih.gov/29255254/ DOI: 10.1038/s41564-017-0079-1
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.