Component
Human matrix metalloproteinase 8 / MMP8
Context-specific entity; species, compartment and exposure are stated on each claim.
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.
What it acts on
MMP cleavage of YARS1 increased TLR2 signaling, TNF secretion and chemotaxis relative to unprocessed YARS1.
Experimental context and source evidence
- evidence_access
- Primary full text and abstract
- experimental_model
- Protein cleavage and macrophage assays; MMP7 and MMP8 among tested enzymes.
- limitations
- A proposed feed-forward inflammatory loop still requires in vivo testing.
- nutrient_topic
- L-Tyrosine collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · L-Tyrosine
- plain_language
- Protease activity changes the strength of an extracellular signal.
- primary_references
- Moonlighting matrix metalloproteinase substrates: Enhancement of proinflammatory functions of extracellular tyrosyl-tRNA synthetase upon cleavage. · 2020 · https://pubmed.ncbi.nlm.nih.gov/31771979/ · DOI 10.1074/jbc.RA119.010486
L-Tyrosine: catecholamines, thyroid chemistry, pigment, metabolism and cross-nutrient mechanisms (2026-09-19) · lines 116–122
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Protein cleavage and macrophage assays; MMP7 and MMP8 among tested enzymes. · source_derived_draft · unverified_draft
## l-tyrosine-yrs-proteolysis Protease activity changes the strength of an extracellular signal. MMP cleavage of YARS1 increased TLR2 signaling, TNF secretion and chemotaxis relative to unprocessed YARS1. Model: Protein cleavage and macrophage assays; MMP7 and MMP8 among tested enzymes. Limitations: A proposed feed-forward inflammatory loop still requires in vivo testing. Evidence access: Primary full text and abstract Moonlighting matrix metalloproteinase substrates: Enhancement of proinflammatory functions of extracellular tyrosyl-tRNA synthetase upon cleavage. · 2020 · https://pubmed.ncbi.nlm.nih.gov/31771979/ · DOI 10.1074/jbc.RA119.010486
Complete structured claim and evidence
Where it participates (unsigned role)
At 0.5 millimolar in the substrate preincubation assay, tyrosine inhibited MMP8 cleavage of YARS1 but did not inhibit MMP7 cleavage.
Experimental context and source evidence
- evidence_access
- Primary full text; substrate/product cleavage methods and results
- experimental_model
- 30-minute substrate preincubation at 22 degrees C; subsequent recombinant-enzyme cleavage assay.
- limitations
- This is not demonstrated inhibition of MMP8 generally or a clinical anti-inflammatory effect.
- nutrient_topic
- L-Tyrosine collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · L-Tyrosine
- plain_language
- The amino acid can alter how one protease handles its loading enzyme.
- primary_references
- Moonlighting matrix metalloproteinase substrates: Enhancement of proinflammatory functions of extracellular tyrosyl-tRNA synthetase upon cleavage. · 2020 · https://pubmed.ncbi.nlm.nih.gov/31771979/ · DOI 10.1074/jbc.RA119.010486
L-Tyrosine: catecholamines, thyroid chemistry, pigment, metabolism and cross-nutrient mechanisms (2026-09-19) · lines 124–130
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · 30-minute substrate preincubation at 22 degrees C; subsequent recombinant-enzyme cleavage assay. · source_derived_draft · unverified_draft
## l-tyrosine-tyrosine-cleavage The amino acid can alter how one protease handles its loading enzyme. At 0.5 millimolar in the substrate preincubation assay, tyrosine inhibited MMP8 cleavage of YARS1 but did not inhibit MMP7 cleavage. Model: 30-minute substrate preincubation at 22 degrees C; subsequent recombinant-enzyme cleavage assay. Limitations: This is not demonstrated inhibition of MMP8 generally or a clinical anti-inflammatory effect. Evidence access: Primary full text; substrate/product cleavage methods and results Moonlighting matrix metalloproteinase substrates: Enhancement of proinflammatory functions of extracellular tyrosyl-tRNA synthetase upon cleavage. · 2020 · https://pubmed.ncbi.nlm.nih.gov/31771979/ · DOI 10.1074/jbc.RA119.010486
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.