Component
Human ACMS decarboxylase / ACMSD
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
Human ACMSD decarboxylates unstable ACMS, competing with its spontaneous conversion toward quinolinate in the NAD synthesis pathway.
Experimental context and source evidence
- evidence_access
- Primary full text, pathway and enzyme results
- experimental_model
- Human recombinant enzyme biochemistry.
- limitations
- Not evidence that zinc intake universally lowers NAD or that inhibiting this branch is always desirable.
- nutrient_topic
- Tryptophan collection; molecular form, preparation, species, exposure and manipulation remain explicit. · L-Tryptophan
- plain_language
- A branch enzyme diverts material away from the quinolinate-to-NAD route.
- primary_references
- Human α-amino-β-carboxymuconate-ε-semialdehyde decarboxylase (ACMSD): a structural and mechanistic unveiling. · 2015 · https://pubmed.ncbi.nlm.nih.gov/25392945/ · DOI 10.1002/prot.24722
Tryptophan: transport, protein synthesis, neuroactive metabolites, NAD and microbial pathways (2026-09-19) · lines 226–232
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human recombinant enzyme biochemistry. · source_derived_draft · unverified_draft
## tryptophan-acmsd-diversion A branch enzyme diverts material away from the quinolinate-to-NAD route. Human ACMSD decarboxylates unstable ACMS, competing with its spontaneous conversion toward quinolinate in the NAD synthesis pathway. Model: Human recombinant enzyme biochemistry. Limitations: Not evidence that zinc intake universally lowers NAD or that inhibiting this branch is always desirable. Evidence access: Primary full text, pathway and enzyme results Human α-amino-β-carboxymuconate-ε-semialdehyde decarboxylase (ACMSD): a structural and mechanistic unveiling. · 2015 · https://pubmed.ncbi.nlm.nih.gov/25392945/ · DOI 10.1002/prot.24722
Complete structured claim and evidenceRecombinant human ACMSD activity increased with incorporated zinc; adding free metal to purified enzyme did not restore or increase activity.
Experimental context and source evidence
- evidence_access
- Primary full text, metal incorporation and kinetics
- experimental_model
- Human enzyme expression, metal analysis, kinetics and crystallography.
- limitations
- Copper-substituted protein was used for spectroscopy; this does not make copper its preferred physiological cofactor.
- nutrient_topic
- Tryptophan collection; molecular form, preparation, species, exposure and manipulation remain explicit. · L-Tryptophan
- plain_language
- The enzyme needs properly incorporated zinc, not simply zinc added later.
- primary_references
- Human α-amino-β-carboxymuconate-ε-semialdehyde decarboxylase (ACMSD): a structural and mechanistic unveiling. · 2015 · https://pubmed.ncbi.nlm.nih.gov/25392945/ · DOI 10.1002/prot.24722
Tryptophan: transport, protein synthesis, neuroactive metabolites, NAD and microbial pathways (2026-09-19) · lines 218–224
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human enzyme expression, metal analysis, kinetics and crystallography. · source_derived_draft · unverified_draft
## tryptophan-acmsd-zinc The enzyme needs properly incorporated zinc, not simply zinc added later. Recombinant human ACMSD activity increased with incorporated zinc; adding free metal to purified enzyme did not restore or increase activity. Model: Human enzyme expression, metal analysis, kinetics and crystallography. Limitations: Copper-substituted protein was used for spectroscopy; this does not make copper its preferred physiological cofactor. Evidence access: Primary full text, metal incorporation and kinetics Human α-amino-β-carboxymuconate-ε-semialdehyde decarboxylase (ACMSD): a structural and mechanistic unveiling. · 2015 · https://pubmed.ncbi.nlm.nih.gov/25392945/ · DOI 10.1002/prot.24722
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.