Component

Rat neuronal nitric oxide synthase / Nos1

Study-scoped entity; inspect species, exposure and experimental limitations on each claim.

3 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

Read recorded mechanisms Open recursive mind map

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.

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.

Recorded relationships

What acts on it

  1. BH4 stimulated both partial reactions; the first increased approximately threefold.

    Tetrahydrobiopterin / BH4 → Rat neuronal nitric oxide synthase / Nos1 source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary abstract
    experimental_model
    Rat cerebellar NOS preparation; separated partial reactions.
    limitations
    Assay-specific stimulation, not a dietary BH4 or arginine treatment rule.
    nutrient_topic
    L-Arginine collection; tissue, species, dose and formulation distinctions retained. · L-Arginine
    plain_language
    Substrate availability and cofactor availability are separate requirements.
    primary_references
    Characteristics of the nitric oxide synthase-catalyzed conversion of arginine to N-hydroxyarginine, the first oxygenation step in the enzymic synthesis of nitric oxide. · 1995 · https://pubmed.ncbi.nlm.nih.gov/7530247/ · DOI 10.1074/jbc.270.4.1721

    L-Arginine: transport, metabolic branches, nutrient interactions, availability and discovery questions (2026-09-18) · lines 86–92

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Rat cerebellar NOS preparation; separated partial reactions. · source_derived_draft · unverified_draft

    ## arg-nos-bh4 Substrate availability and cofactor availability are separate requirements. BH4 stimulated both partial reactions; the first increased approximately threefold. Model: Rat cerebellar NOS preparation; separated partial reactions. Limitations: Assay-specific stimulation, not a dietary BH4 or arginine treatment rule. Evidence access: Primary abstract Characteristics of the nitric oxide synthase-catalyzed conversion of arginine to N-hydroxyarginine, the first oxygenation step in the enzymic synthesis of nitric oxide. · 1995 · https://pubmed.ncbi.nlm.nih.gov/7530247/ · DOI 10.1074/jbc.270.4.1721
    Complete structured claim and evidence

Where it participates (unsigned role)

  1. NOS converted arginine to N-hydroxyarginine in an oxygen- and calcium/calmodulin-dependent partial reaction.

    L-Arginine → Nω-Hydroxy-L-arginine source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary abstract
    experimental_model
    Rat cerebellar NOS preparation; separated partial reactions.
    limitations
    Purified preparation; residual enzyme reductant supported a limited first reaction without added NADPH. This does not imply physiological NOS is NADPH independent.
    nutrient_topic
    L-Arginine collection; tissue, species, dose and formulation distinctions retained. · L-Arginine
    plain_language
    Nitric-oxide production passes through a distinct intermediate.
    primary_references
    Characteristics of the nitric oxide synthase-catalyzed conversion of arginine to N-hydroxyarginine, the first oxygenation step in the enzymic synthesis of nitric oxide. · 1995 · https://pubmed.ncbi.nlm.nih.gov/7530247/ · DOI 10.1074/jbc.270.4.1721

    L-Arginine: transport, metabolic branches, nutrient interactions, availability and discovery questions (2026-09-18) · lines 70–76

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Rat cerebellar NOS preparation; separated partial reactions. · source_derived_draft · unverified_draft

    ## arg-nos-first Nitric-oxide production passes through a distinct intermediate. NOS converted arginine to N-hydroxyarginine in an oxygen- and calcium/calmodulin-dependent partial reaction. Model: Rat cerebellar NOS preparation; separated partial reactions. Limitations: Purified preparation; residual enzyme reductant supported a limited first reaction without added NADPH. This does not imply physiological NOS is NADPH independent. Evidence access: Primary abstract Characteristics of the nitric oxide synthase-catalyzed conversion of arginine to N-hydroxyarginine, the first oxygenation step in the enzymic synthesis of nitric oxide. · 1995 · https://pubmed.ncbi.nlm.nih.gov/7530247/ · DOI 10.1074/jbc.270.4.1721
    Complete structured claim and evidence

  2. The second oxygenation yielded NO and citrulline and required added NADPH and calcium/calmodulin.

    Nω-Hydroxy-L-arginine → NO source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary abstract
    experimental_model
    Rat cerebellar NOS preparation; separated partial reactions.
    limitations
    Purified preparation; residual enzyme reductant supported a limited first reaction without added NADPH. This does not imply physiological NOS is NADPH independent.
    nutrient_topic
    L-Arginine collection; tissue, species, dose and formulation distinctions retained. · L-Arginine
    plain_language
    The next reaction produces the signal and recycles the carbon skeleton.
    primary_references
    Characteristics of the nitric oxide synthase-catalyzed conversion of arginine to N-hydroxyarginine, the first oxygenation step in the enzymic synthesis of nitric oxide. · 1995 · https://pubmed.ncbi.nlm.nih.gov/7530247/ · DOI 10.1074/jbc.270.4.1721

    L-Arginine: transport, metabolic branches, nutrient interactions, availability and discovery questions (2026-09-18) · lines 78–84

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Rat cerebellar NOS preparation; separated partial reactions. · source_derived_draft · unverified_draft

    ## arg-nos-second The next reaction produces the signal and recycles the carbon skeleton. The second oxygenation yielded NO and citrulline and required added NADPH and calcium/calmodulin. Model: Rat cerebellar NOS preparation; separated partial reactions. Limitations: Purified preparation; residual enzyme reductant supported a limited first reaction without added NADPH. This does not imply physiological NOS is NADPH independent. Evidence access: Primary abstract Characteristics of the nitric oxide synthase-catalyzed conversion of arginine to N-hydroxyarginine, the first oxygenation step in the enzymic synthesis of nitric oxide. · 1995 · https://pubmed.ncbi.nlm.nih.gov/7530247/ · DOI 10.1074/jbc.270.4.1721
    Complete structured claim and evidence

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

    This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

    Evidence, AI assistance and curation standards