Component
Collagen telopeptide hydroxylysine residues
Protein-bound site or substrate state, not free dietary L-lysine. Sequence and assay context limit the relationship.
2 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.
Where it participates (unsigned role)
Pathogenic PLOD2 variants were associated with telopeptide underhydroxylation and abnormal bone collagen cross-links.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- experimental_model
- Bone collagen from a patient with compound-heterozygous PLOD2 variants.
- limitations
- Rare genetic disease; cannot be generalized to low lysine intake or used as evidence that lysine treats Bruck syndrome.
- organism
- Human
- plain_language
- An impaired enzyme can change collagen cross-links without a shortage of dietary lysine.
- primary_references
- [plod2-bruck-2021] Abnormal Bone Collagen Cross-Linking in Osteogenesis Imperfecta/Bruck Syndrome Caused by Compound Heterozygous PLOD2 Mutations (2021). https://pmc.ncbi.nlm.nih.gov/articles/PMC7990156/
- tissue_or_cell_type
- Bone
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
L-Lysine: mechanism-first literature curation (2026-09-17) · lines 507–515
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Bone collagen from a patient with compound-heterozygous PLOD2 variants. · source_derived_draft · unverified_draft
### plod2-impairment-crosslinks Pathogenic PLOD2 variants were associated with telopeptide underhydroxylation and abnormal bone collagen cross-links. Plain language: An impaired enzyme can change collagen cross-links without a shortage of dietary lysine. Condition category: machinery_impairment organism: Human tissue_or_cell_type: Bone experimental_model: Bone collagen from a patient with compound-heterozygous PLOD2 variants. limitations: Rare genetic disease; cannot be generalized to low lysine intake or used as evidence that lysine treats Bruck syndrome. [plod2-bruck-2021] Abnormal Bone Collagen Cross-Linking in Osteogenesis Imperfecta/Bruck Syndrome Caused by Compound Heterozygous PLOD2 Mutations (2021). https://pmc.ncbi.nlm.nih.gov/articles/PMC7990156/
Complete structured claim and evidencePLOD2/LH2 hydroxylates collagen telopeptide lysines, influencing the subsequent cross-link pathway.
Experimental context and source evidence
- experimental_model
- Human patient bone collagen biochemistry and PLOD2 variant analysis.
- limitations
- This reaction modifies lysine already in a protein. It does not show that extra oral lysine increases the reaction or improves a clinical outcome.
- organism
- Human
- plain_language
- This enzyme prepares lysines near collagen ends for particular cross-links.
- primary_references
- [plod2-bruck-2021] Abnormal Bone Collagen Cross-Linking in Osteogenesis Imperfecta/Bruck Syndrome Caused by Compound Heterozygous PLOD2 Mutations (2021). https://pmc.ncbi.nlm.nih.gov/articles/PMC7990156/
- tissue_or_cell_type
- Not specified as a whole tissue; see experimental model.
L-Lysine: mechanism-first literature curation (2026-09-17) · lines 397–405
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Human patient bone collagen biochemistry and PLOD2 variant analysis. · source_derived_draft · unverified_draft
### plod2-telopeptide-hydroxylation PLOD2/LH2 hydroxylates collagen telopeptide lysines, influencing the subsequent cross-link pathway. Plain language: This enzyme prepares lysines near collagen ends for particular cross-links. Condition category: normal organism: Human tissue_or_cell_type: Not specified as a whole tissue; see experimental model. experimental_model: Human patient bone collagen biochemistry and PLOD2 variant analysis. limitations: This reaction modifies lysine already in a protein. It does not show that extra oral lysine increases the reaction or improves a clinical outcome. [plod2-bruck-2021] Abnormal Bone Collagen Cross-Linking in Osteogenesis Imperfecta/Bruck Syndrome Caused by Compound Heterozygous PLOD2 Mutations (2021). https://pmc.ncbi.nlm.nih.gov/articles/PMC7990156/
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.