Component

Thiazide-sensitive sodium-chloride cotransporter

Canonical protein; experimental species, state, expression context and nutritional dependence are specified per claim.

17 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 it acts on

  1. Low-potassium feeding on high salt reduced sodium excretion; NCC deletion blunted the blood-pressure response.

    Thiazide-sensitive sodium-chloride cotransporter → Renal sodium reabsorption source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    nutrient_deficiency Imported condition classification; unverified.
    cross_nutrient
    Potassium restriction changes sodium handling through NCC.
    evidence_location
    Figure 2A-C.
    experimental_model
    Wild-type versus Slc12a3-null dietary study
    limitations
    Knockout tests pathway contribution, not exclusive control of pressure.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    Potassium scarcity can make sodium retention easier through NCC.
    primary_references
    [terker-2015-k-voltage-chloride] Potassium Modulates Electrolyte Balance and Blood Pressure through Effects on Distal Cell Voltage and Chloride (2015). https://pmc.ncbi.nlm.nih.gov/articles/PMC4332769/ DOI: 10.1016/j.cmet.2014.12.006
    tissue_or_cell_type
    Kidney
    trigger_kind
    nutrient_deficiency Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 112–123

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Wild-type versus Slc12a3-null dietary study · source_derived_draft · unverified_draft

    ### renal-low-k-ncc-salt-retention Low-potassium feeding on high salt reduced sodium excretion; NCC deletion blunted the blood-pressure response. Condition category: nutrient_deficiency nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Potassium scarcity can make sodium retention easier through NCC. organism: Mus musculus tissue_or_cell_type: Kidney experimental_model: Wild-type versus Slc12a3-null dietary study limitations: Knockout tests pathway contribution, not exclusive control of pressure. cross_nutrient: Potassium restriction changes sodium handling through NCC. evidence_location: Figure 2A-C. [terker-2015-k-voltage-chloride] Potassium Modulates Electrolyte Balance and Blood Pressure through Effects on Distal Cell Voltage and Chloride (2015). https://pmc.ncbi.nlm.nih.gov/articles/PMC4332769/ DOI: 10.1016/j.cmet.2014.12.006
    Complete structured claim and evidence

  2. NCC-deficient mice showed markedly less sodium excretion after the acute oral K load than controls.

    Thiazide-sensitive sodium-chloride cotransporter → Urinary sodium excretion source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    K loading can increase sodium excretion through NCC regulation.
    evidence_location
    Primary abstract; NCC-deficient natriuresis comparison.
    experimental_model
    NCC knockout and control K gavage
    limitations
    This does not establish that increased distal sodium delivery alone explains all kaliuresis.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    Turning NCC down contributes to the sodium loss caused by potassium loading.
    primary_references
    [sorensen-2013-oral-k-ncc] Rapid dephosphorylation of the renal sodium chloride cotransporter in response to oral potassium intake in mice (2013). https://pubmed.ncbi.nlm.nih.gov/23447069/ DOI: 10.1038/ki.2013.14
    tissue_or_cell_type
    Kidney

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 307–318

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · NCC knockout and control K gavage · source_derived_draft · unverified_draft

    ### renal-ncc-loss-blunts-k-natriuresis NCC-deficient mice showed markedly less sodium excretion after the acute oral K load than controls. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Turning NCC down contributes to the sodium loss caused by potassium loading. organism: Mus musculus tissue_or_cell_type: Kidney experimental_model: NCC knockout and control K gavage limitations: This does not establish that increased distal sodium delivery alone explains all kaliuresis. cross_nutrient: K loading can increase sodium excretion through NCC regulation. evidence_location: Primary abstract; NCC-deficient natriuresis comparison. [sorensen-2013-oral-k-ncc] Rapid dephosphorylation of the renal sodium chloride cotransporter in response to oral potassium intake in mice (2013). https://pubmed.ncbi.nlm.nih.gov/23447069/ DOI: 10.1038/ki.2013.14
    Complete structured claim and evidence

What acts on it

  1. Kcnj16-null mice failed to change NCC abundance/phosphorylation with high- or low-K diets despite persistent Kir4.1 conductance.

    Inward rectifier potassium channel Kir5.1 → Thiazide-sensitive sodium-chloride cotransporter source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    cross_nutrient
    Defective K sensing prevents appropriate sodium/chloride transporter adjustment.
    evidence_location
    Results and primary abstract; dietary electrophysiology and NCC assays.
    experimental_model
    Kir5.1 knockout with high/low K diets
    limitations
    Kir4.1 homomer conductance increases; this differs from Kir4.1 deletion.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    The Kir5.1 partner allows this potassium channel system to adjust sodium transport when intake changes.
    primary_references
    [wang-2019-kir5-sensing] Deletion of Kir5.1 Impairs Renal Ability to Excrete Potassium during Increased Dietary Potassium Intake (2019). https://pmc.ncbi.nlm.nih.gov/articles/PMC6683724/ DOI: 10.1681/ASN.2019010025
    tissue_or_cell_type
    DCT
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 203–214

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Kir5.1 knockout with high/low K diets · source_derived_draft · unverified_draft

    ### renal-kir5-loss-prevents-diet-ncc-response Kcnj16-null mice failed to change NCC abundance/phosphorylation with high- or low-K diets despite persistent Kir4.1 conductance. Condition category: machinery_impairment nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The Kir5.1 partner allows this potassium channel system to adjust sodium transport when intake changes. organism: Mus musculus tissue_or_cell_type: DCT experimental_model: Kir5.1 knockout with high/low K diets limitations: Kir4.1 homomer conductance increases; this differs from Kir4.1 deletion. cross_nutrient: Defective K sensing prevents appropriate sodium/chloride transporter adjustment. evidence_location: Results and primary abstract; dietary electrophysiology and NCC assays. [wang-2019-kir5-sensing] Deletion of Kir5.1 Impairs Renal Ability to Excrete Potassium during Increased Dietary Potassium Intake (2019). https://pmc.ncbi.nlm.nih.gov/articles/PMC6683724/ DOI: 10.1681/ASN.2019010025
    Complete structured claim and evidence

  2. OSR1 phosphorylated human NCC at Thr46, Thr55 and Thr60; Thr60 mutation impaired chloride-depletion-induced NCC activation.

    Oxidative stress responsive kinase 1 → Thiazide-sensitive sodium-chloride cotransporter source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    Defines the sodium/chloride transporter step of the potassium switch.
    evidence_location
    Primary abstract; phosphosite mapping, docking and Thr60Ala assays.
    experimental_model
    Recombinant phosphosite mapping and cell mutants
    limitations
    The dietary K response was not tested in this experiment.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Human protein; HEK293/mpkDCT cells
    plain_language
    A kinase modifies the sodium-chloride transporter at regulatory sites.
    primary_references
    [richardson-2008-spak-osr1-ncc] Activation of the thiazide-sensitive Na+-Cl- cotransporter by the WNK-regulated kinases SPAK and OSR1 (2008). https://pubmed.ncbi.nlm.nih.gov/18270262/ DOI: 10.1242/jcs.025312
    tissue_or_cell_type
    Biochemical assay and cultured kidney-derived cells

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 177–188

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Recombinant phosphosite mapping and cell mutants · source_derived_draft · unverified_draft

    ### renal-oxsr1-phosphorylates-ncc OSR1 phosphorylated human NCC at Thr46, Thr55 and Thr60; Thr60 mutation impaired chloride-depletion-induced NCC activation. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: A kinase modifies the sodium-chloride transporter at regulatory sites. organism: Human protein; HEK293/mpkDCT cells tissue_or_cell_type: Biochemical assay and cultured kidney-derived cells experimental_model: Recombinant phosphosite mapping and cell mutants limitations: The dietary K response was not tested in this experiment. cross_nutrient: Defines the sodium/chloride transporter step of the potassium switch. evidence_location: Primary abstract; phosphosite mapping, docking and Thr60Ala assays. [richardson-2008-spak-osr1-ncc] Activation of the thiazide-sensitive Na+-Cl- cotransporter by the WNK-regulated kinases SPAK and OSR1 (2008). https://pubmed.ncbi.nlm.nih.gov/18270262/ DOI: 10.1242/jcs.025312
    Complete structured claim and evidence

  3. PP1A directly bound the NCC regulatory terminus and dephosphorylated NCC; high extracellular K enhanced their association in MDCKI-hNCC cells.

    Protein phosphatase 1 catalytic subunit alpha → Thiazide-sensitive sodium-chloride cotransporter source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    K-dependent phosphatase engagement reduces the activation signal of the Na/Cl transporter.
    evidence_location
    Figure 6A-C.
    experimental_model
    Purified binding/phosphatase assays and MDCKI-hNCC cells
    limitations
    Binding/activity assays do not by themselves quantify sodium transport in humans.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Recombinant proteins; Canis lupus familiaris cell line expressing human NCC
    plain_language
    Potassium can increase contact between NCC and an enzyme that removes its phosphate signal.
    primary_references
    [grimm-2023-pp1a-ncc] Dietary potassium stimulates Ppp1Ca-Ppp1r1a dephosphorylation of kidney NaCl cotransporter and reduces blood pressure (2023). https://www.jci.org/articles/view/158498 DOI: 10.1172/JCI158498
    tissue_or_cell_type
    Cell-free and kidney-derived cells

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 268–279

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Purified binding/phosphatase assays and MDCKI-hNCC cells · source_derived_draft · unverified_draft

    ### renal-pp1a-dephosphorylates-ncc PP1A directly bound the NCC regulatory terminus and dephosphorylated NCC; high extracellular K enhanced their association in MDCKI-hNCC cells. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Potassium can increase contact between NCC and an enzyme that removes its phosphate signal. organism: Recombinant proteins; Canis lupus familiaris cell line expressing human NCC tissue_or_cell_type: Cell-free and kidney-derived cells experimental_model: Purified binding/phosphatase assays and MDCKI-hNCC cells limitations: Binding/activity assays do not by themselves quantify sodium transport in humans. cross_nutrient: K-dependent phosphatase engagement reduces the activation signal of the Na/Cl transporter. evidence_location: Figure 6A-C. [grimm-2023-pp1a-ncc] Dietary potassium stimulates Ppp1Ca-Ppp1r1a dephosphorylation of kidney NaCl cotransporter and reduces blood pressure (2023). https://www.jci.org/articles/view/158498 DOI: 10.1172/JCI158498
    Complete structured claim and evidence

  4. SPAK phosphorylated human NCC at Thr46, Thr55 and Thr60; Thr60 mutation impaired chloride-depletion-induced NCC activation.

    STE20/SPS1-related proline/alanine-rich kinase → Thiazide-sensitive sodium-chloride cotransporter source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    Defines the sodium/chloride transporter step of the potassium switch.
    evidence_location
    Primary abstract; phosphosite mapping, docking and Thr60Ala assays.
    experimental_model
    Recombinant phosphosite mapping and cell mutants
    limitations
    The dietary K response was not tested in this experiment.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Human protein; HEK293/mpkDCT cells
    plain_language
    A kinase modifies the sodium-chloride transporter at regulatory sites.
    primary_references
    [richardson-2008-spak-osr1-ncc] Activation of the thiazide-sensitive Na+-Cl- cotransporter by the WNK-regulated kinases SPAK and OSR1 (2008). https://pubmed.ncbi.nlm.nih.gov/18270262/ DOI: 10.1242/jcs.025312
    tissue_or_cell_type
    Biochemical assay and cultured kidney-derived cells

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 164–175

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Recombinant phosphosite mapping and cell mutants · source_derived_draft · unverified_draft

    ### renal-stk39-phosphorylates-ncc SPAK phosphorylated human NCC at Thr46, Thr55 and Thr60; Thr60 mutation impaired chloride-depletion-induced NCC activation. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: A kinase modifies the sodium-chloride transporter at regulatory sites. organism: Human protein; HEK293/mpkDCT cells tissue_or_cell_type: Biochemical assay and cultured kidney-derived cells experimental_model: Recombinant phosphosite mapping and cell mutants limitations: The dietary K response was not tested in this experiment. cross_nutrient: Defines the sodium/chloride transporter step of the potassium switch. evidence_location: Primary abstract; phosphosite mapping, docking and Thr60Ala assays. [richardson-2008-spak-osr1-ncc] Activation of the thiazide-sensitive Na+-Cl- cotransporter by the WNK-regulated kinases SPAK and OSR1 (2008). https://pubmed.ncbi.nlm.nih.gov/18270262/ DOI: 10.1242/jcs.025312
    Complete structured claim and evidence

Where it participates (unsigned role)

  1. Increasing chloride inhibited recombinant WNK4 phosphorylation of SPAK more strongly than WNK1/3 in matched assays.

    Chloride ion → WNK lysine deficient protein kinase 4 source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    Chloride concentration gates a kinase linking K sensing to Na transport.
    evidence_location
    Figure 3; equimolar chloride/gluconate kinase assay.
    experimental_model
    Purified kinase domains; SPAK substrate
    limitations
    Does not directly measure native DCT chloride or WNK4 autophosphorylation.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Recombinant proteins
    plain_language
    Chloride restrains WNK4, a kinase upstream of sodium-chloride transport.
    primary_references
    [terker-2016-wnk4-chloride] Unique chloride-sensing properties of WNK4 permit the distal nephron to modulate potassium homeostasis (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC4814375/ DOI: 10.1038/ki.2015.289
    tissue_or_cell_type
    Cell-free assay

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 138–149

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Purified kinase domains; SPAK substrate · source_derived_draft · unverified_draft

    ### renal-chloride-inhibits-wnk4 Increasing chloride inhibited recombinant WNK4 phosphorylation of SPAK more strongly than WNK1/3 in matched assays. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Chloride restrains WNK4, a kinase upstream of sodium-chloride transport. organism: Recombinant proteins tissue_or_cell_type: Cell-free assay experimental_model: Purified kinase domains; SPAK substrate limitations: Does not directly measure native DCT chloride or WNK4 autophosphorylation. cross_nutrient: Chloride concentration gates a kinase linking K sensing to Na transport. evidence_location: Figure 3; equimolar chloride/gluconate kinase assay. [terker-2016-wnk4-chloride] Unique chloride-sensing properties of WNK4 permit the distal nephron to modulate potassium homeostasis (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC4814375/ DOI: 10.1038/ki.2015.289
    Complete structured claim and evidence

  2. Supplementary KCl lowered total and phosphorylated NCC in urinary extracellular vesicles versus placebo in a randomized crossover study.

    Potassium chloride → Urinary extracellular-vesicle NCC abundance source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    biomarker_context Imported condition classification; unverified.
    cross_nutrient
    Human biomarker evidence links increased KCl intake to altered NaCl-transporter regulation.
    evidence_location
    Primary abstract; randomized crossover uEV immunoblots.
    experimental_model
    Five-day crossover phases; 18 analyzed healthy participants; controlled high-Na/low-K diet
    limitations
    Vesicle cargo is an indirect renal readout; no dietary recommendation or direct transport-flux inference.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Homo sapiens
    plain_language
    A human urine marker of the sodium-chloride transporter fell when potassium intake increased.
    primary_references
    [wu-2023-human-ncc] Randomized Trial on the Effect of Oral Potassium Chloride Supplementation on the Thiazide-Sensitive Sodium Chloride Cotransporter in Healthy Adults (2023). https://pmc.ncbi.nlm.nih.gov/articles/PMC10239795/ DOI: 10.1016/j.ekir.2023.03.011
    tissue_or_cell_type
    Urinary extracellular vesicles
    trigger_kind
    biomarker_context Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 535–546

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Five-day crossover phases; 18 analyzed healthy participants; controlled high-Na/low-K diet · source_derived_draft · unverified_draft

    ### renal-human-kcl-lowers-uev-ncc Supplementary KCl lowered total and phosphorylated NCC in urinary extracellular vesicles versus placebo in a randomized crossover study. Condition category: biomarker_context nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: A human urine marker of the sodium-chloride transporter fell when potassium intake increased. organism: Homo sapiens tissue_or_cell_type: Urinary extracellular vesicles experimental_model: Five-day crossover phases; 18 analyzed healthy participants; controlled high-Na/low-K diet limitations: Vesicle cargo is an indirect renal readout; no dietary recommendation or direct transport-flux inference. cross_nutrient: Human biomarker evidence links increased KCl intake to altered NaCl-transporter regulation. evidence_location: Primary abstract; randomized crossover uEV immunoblots. [wu-2023-human-ncc] Randomized Trial on the Effect of Oral Potassium Chloride Supplementation on the Thiazide-Sensitive Sodium Chloride Cotransporter in Healthy Adults (2023). https://pmc.ncbi.nlm.nih.gov/articles/PMC10239795/ DOI: 10.1016/j.ekir.2023.03.011
    Complete structured claim and evidence

  3. After high-K dietary adaptation, DCT-specific constitutively active SPAK mice reduced NCC phosphorylation despite persistent kinase activation.

    Potassium → NCC phosphorylation source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    cross_nutrient
    Dietary K adjusts the balance controlling Na/Cl transporter activation.
    evidence_location
    Figure 1; Figures 4-5; Discussion.
    experimental_model
    Four-day dietary K loading in CA-SPAK mice
    limitations
    Response required higher plasma K than controls; not a general claim that kinase state is irrelevant.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    With adaptation, the phosphate-removing response can overcome a continuously active kinase.
    primary_references
    [grimm-2023-pp1a-ncc] Dietary potassium stimulates Ppp1Ca-Ppp1r1a dephosphorylation of kidney NaCl cotransporter and reduces blood pressure (2023). https://www.jci.org/articles/view/158498 DOI: 10.1172/JCI158498
    tissue_or_cell_type
    DCT
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 281–292

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Four-day dietary K loading in CA-SPAK mice · source_derived_draft · unverified_draft

    ### renal-k-adaptation-overcomes-active-spak After high-K dietary adaptation, DCT-specific constitutively active SPAK mice reduced NCC phosphorylation despite persistent kinase activation. Condition category: machinery_impairment nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: With adaptation, the phosphate-removing response can overcome a continuously active kinase. organism: Mus musculus tissue_or_cell_type: DCT experimental_model: Four-day dietary K loading in CA-SPAK mice limitations: Response required higher plasma K than controls; not a general claim that kinase state is irrelevant. cross_nutrient: Dietary K adjusts the balance controlling Na/Cl transporter activation. evidence_location: Figure 1; Figures 4-5; Discussion. [grimm-2023-pp1a-ncc] Dietary potassium stimulates Ppp1Ca-Ppp1r1a dephosphorylation of kidney NaCl cotransporter and reduces blood pressure (2023). https://www.jci.org/articles/view/158498 DOI: 10.1172/JCI158498
    Complete structured claim and evidence

  4. Adult renal Kir4.1 deletion depolarized DCT cells and abolished their voltage response to plasma potassium.

    Inward rectifier potassium channel Kir4.1 → DCT membrane potential source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    cross_nutrient
    Potassium conductance is needed to regulate apical sodium/chloride transport.
    evidence_location
    Abstract and Discussion; DCT patch-clamp experiments.
    experimental_model
    Inducible adult kidney-specific Kcnj10 deletion
    limitations
    Genetic loss is not dietary deficiency; Kir5.1 participation was not directly deleted in this study.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    Without Kir4.1, DCT cells lose the electrical response used to sense potassium.
    primary_references
    [cuevas-2017-kir4-sensing] Potassium Sensing by Renal Distal Tubules Requires Kir4.1 (2017). https://pmc.ncbi.nlm.nih.gov/articles/PMC5461801/ DOI: 10.1681/ASN.2016090935
    tissue_or_cell_type
    DCT basolateral membrane
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 190–201

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Inducible adult kidney-specific Kcnj10 deletion · source_derived_draft · unverified_draft

    ### renal-kir4-loss-disables-sensing Adult renal Kir4.1 deletion depolarized DCT cells and abolished their voltage response to plasma potassium. Condition category: machinery_impairment nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Without Kir4.1, DCT cells lose the electrical response used to sense potassium. organism: Mus musculus tissue_or_cell_type: DCT basolateral membrane experimental_model: Inducible adult kidney-specific Kcnj10 deletion limitations: Genetic loss is not dietary deficiency; Kir5.1 participation was not directly deleted in this study. cross_nutrient: Potassium conductance is needed to regulate apical sodium/chloride transport. evidence_location: Abstract and Discussion; DCT patch-clamp experiments. [cuevas-2017-kir4-sensing] Potassium Sensing by Renal Distal Tubules Requires Kir4.1 (2017). https://pmc.ncbi.nlm.nih.gov/articles/PMC5461801/ DOI: 10.1681/ASN.2016090935
    Complete structured claim and evidence

  5. High-salt/low-potassium feeding increased renal NCC phosphorylation in mice.

    Potassium → NCC phosphorylation source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    nutrient_deficiency Imported condition classification; unverified.
    cross_nutrient
    Low K availability increases signaling for sodium/chloride reabsorption.
    evidence_location
    Results; dietary NCC immunoblots.
    experimental_model
    Diet manipulation
    limitations
    pNCC is an activity-associated proxy; this is not a universal dietary threshold.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    With little dietary potassium, the kidney increases a sodium-chloride transporter signal.
    primary_references
    [terker-2015-k-voltage-chloride] Potassium Modulates Electrolyte Balance and Blood Pressure through Effects on Distal Cell Voltage and Chloride (2015). https://pmc.ncbi.nlm.nih.gov/articles/PMC4332769/ DOI: 10.1016/j.cmet.2014.12.006
    tissue_or_cell_type
    Distal convoluted tubule
    trigger_kind
    nutrient_deficiency Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 99–110

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Diet manipulation · source_derived_draft · unverified_draft

    ### renal-low-k-activates-ncc High-salt/low-potassium feeding increased renal NCC phosphorylation in mice. Condition category: nutrient_deficiency nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: With little dietary potassium, the kidney increases a sodium-chloride transporter signal. organism: Mus musculus tissue_or_cell_type: Distal convoluted tubule experimental_model: Diet manipulation limitations: pNCC is an activity-associated proxy; this is not a universal dietary threshold. cross_nutrient: Low K availability increases signaling for sodium/chloride reabsorption. evidence_location: Results; dietary NCC immunoblots. [terker-2015-k-voltage-chloride] Potassium Modulates Electrolyte Balance and Blood Pressure through Effects on Distal Cell Voltage and Chloride (2015). https://pmc.ncbi.nlm.nih.gov/articles/PMC4332769/ DOI: 10.1016/j.cmet.2014.12.006
    Complete structured claim and evidence

  6. High-K-induced NCC dephosphorylation persisted during low extracellular chloride or chloride-channel blockade in mouse kidney preparations.

    Potassium ion → NCC phosphorylation source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    High K can suppress the sodium/chloride transporter through additional signaling.
    evidence_location
    Primary abstract; low extracellular chloride and DIDS experiments.
    experimental_model
    Perfused kidney and kidney slices
    limitations
    Pharmacological/ionic tests do not prove every chloride-sensitive step is absent.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    The rapid high-potassium response can persist when tested chloride movements are disrupted.
    primary_references
    [penton-2016-native-potassium-switch] Extracellular K+ rapidly controls NaCl cotransporter phosphorylation in the native distal convoluted tubule by Cl--dependent and independent mechanisms (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC5088235/ DOI: 10.1113/JP272504
    tissue_or_cell_type
    Native DCT

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 229–240

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Perfused kidney and kidney slices · source_derived_draft · unverified_draft

    ### renal-native-high-k-cl-independent-ncc-off High-K-induced NCC dephosphorylation persisted during low extracellular chloride or chloride-channel blockade in mouse kidney preparations. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The rapid high-potassium response can persist when tested chloride movements are disrupted. organism: Mus musculus tissue_or_cell_type: Native DCT experimental_model: Perfused kidney and kidney slices limitations: Pharmacological/ionic tests do not prove every chloride-sensitive step is absent. cross_nutrient: High K can suppress the sodium/chloride transporter through additional signaling. evidence_location: Primary abstract; low extracellular chloride and DIDS experiments. [penton-2016-native-potassium-switch] Extracellular K+ rapidly controls NaCl cotransporter phosphorylation in the native distal convoluted tubule by Cl--dependent and independent mechanisms (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC5088235/ DOI: 10.1113/JP272504
    Complete structured claim and evidence

  7. In native mouse kidney preparations, low extracellular K increased NCC phosphorylation through chloride-conductance-dependent SPAK/OSR1 signaling.

    Potassium ion → NCC phosphorylation source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    K concentration regulates sodium/chloride transport via chloride-sensitive signaling.
    evidence_location
    Abstract and Results; low chloride and DIDS comparisons.
    experimental_model
    Perfused kidney and kidney slices
    limitations
    Acute bath/perfusate manipulation is not whole-body potassium depletion.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    The low-potassium signal needs chloride movement to increase the transporter phosphate signal.
    primary_references
    [penton-2016-native-potassium-switch] Extracellular K+ rapidly controls NaCl cotransporter phosphorylation in the native distal convoluted tubule by Cl--dependent and independent mechanisms (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC5088235/ DOI: 10.1113/JP272504
    tissue_or_cell_type
    Native DCT

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 216–227

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Perfused kidney and kidney slices · source_derived_draft · unverified_draft

    ### renal-native-low-k-requires-chloride-flux In native mouse kidney preparations, low extracellular K increased NCC phosphorylation through chloride-conductance-dependent SPAK/OSR1 signaling. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The low-potassium signal needs chloride movement to increase the transporter phosphate signal. organism: Mus musculus tissue_or_cell_type: Native DCT experimental_model: Perfused kidney and kidney slices limitations: Acute bath/perfusate manipulation is not whole-body potassium depletion. cross_nutrient: K concentration regulates sodium/chloride transport via chloride-sensitive signaling. evidence_location: Abstract and Results; low chloride and DIDS comparisons. [penton-2016-native-potassium-switch] Extracellular K+ rapidly controls NaCl cotransporter phosphorylation in the native distal convoluted tubule by Cl--dependent and independent mechanisms (2016). https://pmc.ncbi.nlm.nih.gov/articles/PMC5088235/ DOI: 10.1113/JP272504
    Complete structured claim and evidence

  8. Cloned renal NKCC2 supported bumetanide-sensitive sodium-potassium-chloride cotransport in oocytes, distinct from NCC potassium-independent NaCl transport.

    Sodium-potassium-chloride cotransporter 2 → NKCC2-mediated ion influx source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    Potassium is a transported participant in this sodium/chloride entry mechanism.
    evidence_location
    Primary abstract; functional oocyte characterization.
    experimental_model
    Cloned renal cotransporter expression
    limitations
    Transport identity, not a dietary deficiency threshold; individual splice variants are not generalized.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mammalian proteins in Xenopus laevis oocytes
    plain_language
    NKCC2 moves potassium together with sodium and chloride; the related NCC transporter does not require potassium as cargo.
    primary_references
    [gamba-1994-nkcc2] Molecular cloning, primary structure, and characterization of two members of the mammalian electroneutral sodium-(potassium)-chloride cotransporter family expressed in kidney (1994). https://www.sciencedirect.com/science/article/pii/S0021925817324997 DOI: 10.1016/S0021-9258(17)32499-7
    tissue_or_cell_type
    Heterologous cell membrane

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 548–559

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Cloned renal cotransporter expression · source_derived_draft · unverified_draft

    ### renal-nkcc2-couples-potassium-to-salt-influx Cloned renal NKCC2 supported bumetanide-sensitive sodium-potassium-chloride cotransport in oocytes, distinct from NCC potassium-independent NaCl transport. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: NKCC2 moves potassium together with sodium and chloride; the related NCC transporter does not require potassium as cargo. organism: Mammalian proteins in Xenopus laevis oocytes tissue_or_cell_type: Heterologous cell membrane experimental_model: Cloned renal cotransporter expression limitations: Transport identity, not a dietary deficiency threshold; individual splice variants are not generalized. cross_nutrient: Potassium is a transported participant in this sodium/chloride entry mechanism. evidence_location: Primary abstract; functional oocyte characterization. [gamba-1994-nkcc2] Molecular cloning, primary structure, and characterization of two members of the mammalian electroneutral sodium-(potassium)-chloride cotransporter family expressed in kidney (1994). https://www.sciencedirect.com/science/article/pii/S0021925817324997 DOI: 10.1016/S0021-9258(17)32499-7
    Complete structured claim and evidence

  9. Oral K rapidly dephosphorylated NCC in mice, including aldosterone-deficient animals.

    Potassium → NCC phosphorylation source_derived_draftungraded
    Experimental context and source evidence
    cross_nutrient
    K loading suppresses a Na/Cl transporter before some hormonal adaptations.
    evidence_location
    Primary abstract; early NCC time course and aldosterone-deficient mice.
    experimental_model
    Gastric K load; aldosterone-deficient comparison
    limitations
    Early response differs from later ENaC activation; acute gavage is not a chronic diet.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    The earliest NCC response to potassium does not require a new aldosterone signal in this model.
    primary_references
    [sorensen-2013-oral-k-ncc] Rapid dephosphorylation of the renal sodium chloride cotransporter in response to oral potassium intake in mice (2013). https://pubmed.ncbi.nlm.nih.gov/23447069/ DOI: 10.1038/ki.2013.14
    tissue_or_cell_type
    Kidney DCT

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 294–305

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Gastric K load; aldosterone-deficient comparison · source_derived_draft · unverified_draft

    ### renal-oral-k-aldosterone-independent-ncc-off Oral K rapidly dephosphorylated NCC in mice, including aldosterone-deficient animals. Condition category: normal nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: The earliest NCC response to potassium does not require a new aldosterone signal in this model. organism: Mus musculus tissue_or_cell_type: Kidney DCT experimental_model: Gastric K load; aldosterone-deficient comparison limitations: Early response differs from later ENaC activation; acute gavage is not a chronic diet. cross_nutrient: K loading suppresses a Na/Cl transporter before some hormonal adaptations. evidence_location: Primary abstract; early NCC time course and aldosterone-deficient mice. [sorensen-2013-oral-k-ncc] Rapid dephosphorylation of the renal sodium chloride cotransporter in response to oral potassium intake in mice (2013). https://pubmed.ncbi.nlm.nih.gov/23447069/ DOI: 10.1038/ki.2013.14
    Complete structured claim and evidence

  10. Acute oral potassium failed to suppress NCC in mice carrying chloride-insensitive WNK4, unlike wild-type controls.

    WNK4 L319F/L321F chloride-insensitive variant → NCC phosphorylation source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    cross_nutrient
    A chloride-sensing defect disrupts K control of sodium transport.
    evidence_location
    Primary abstract; acute gavage NCC comparison.
    experimental_model
    Wnk4 LLFF knockin; oral K gavage
    limitations
    Constitutive kinase activation and longer-term K responses must be distinguished.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Mus musculus
    plain_language
    Making WNK4 insensitive to chloride blocks the rapid potassium response in this mouse model.
    primary_references
    [chen-2019-wnk4-sensor] WNK4 kinase is a physiological intracellular chloride sensor (2019). https://pmc.ncbi.nlm.nih.gov/articles/PMC6410802/ DOI: 10.1073/pnas.1817220116
    tissue_or_cell_type
    Kidney DCT
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 242–253

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Wnk4 LLFF knockin; oral K gavage · source_derived_draft · unverified_draft

    ### renal-wnk4-chloride-mutant-blocks-acute-k-off Acute oral potassium failed to suppress NCC in mice carrying chloride-insensitive WNK4, unlike wild-type controls. Condition category: machinery_impairment nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Making WNK4 insensitive to chloride blocks the rapid potassium response in this mouse model. organism: Mus musculus tissue_or_cell_type: Kidney DCT experimental_model: Wnk4 LLFF knockin; oral K gavage limitations: Constitutive kinase activation and longer-term K responses must be distinguished. cross_nutrient: A chloride-sensing defect disrupts K control of sodium transport. evidence_location: Primary abstract; acute gavage NCC comparison. [chen-2019-wnk4-sensor] WNK4 kinase is a physiological intracellular chloride sensor (2019). https://pmc.ncbi.nlm.nih.gov/articles/PMC6410802/ DOI: 10.1073/pnas.1817220116
    Complete structured claim and evidence

  11. Chloride-insensitive WNK4 blocked high-K NCC dephosphorylation in HEK cells; the authors inferred that WNK4-SPAK inhibition is required for the rapid response.

    WNK4 L319F/L321F chloride-insensitive variant → NCC phosphorylation source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    cross_nutrient
    Balance of kinase and phosphatase signaling controls Na/Cl transport responses to K.
    evidence_location
    Discussion; WNK4-LLFF HEK experiment and acute-versus-prolonged restriction comparison.
    experimental_model
    HEK mutant expression with complementary mouse/kidney-slice experiments
    limitations
    Inference about obligatory kinase shutdown is disputed; model and adaptation time matter.
    nutrient_topic
    Potassium research collection; topical membership is not evidence of a direct dietary effect. · Potassium
    organism
    Homo sapiens cell line; Mus musculus
    plain_language
    A strongly active kinase relay can keep NCC phosphorylated during an acute potassium challenge.
    primary_references
    [yang-2021-ncc-off-switch] Roles of WNK4 and SPAK in K+-mediated dephosphorylation of the NaCl cotransporter (2021). https://pmc.ncbi.nlm.nih.gov/articles/PMC8174808/ DOI: 10.1152/ajprenal.00459.2020
    tissue_or_cell_type
    HEK cells and renal DCT
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Potassium: cross-nutrient mechanisms and deficiency (2026-09-17) · lines 255–266

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · HEK mutant expression with complementary mouse/kidney-slice experiments · source_derived_draft · unverified_draft

    ### renal-wnk4-spak-activation-opposes-acute-off Chloride-insensitive WNK4 blocked high-K NCC dephosphorylation in HEK cells; the authors inferred that WNK4-SPAK inhibition is required for the rapid response. Condition category: machinery_impairment nutrient_topic: Potassium research collection; topical membership is not evidence of a direct dietary effect. plain_language: A strongly active kinase relay can keep NCC phosphorylated during an acute potassium challenge. organism: Homo sapiens cell line; Mus musculus tissue_or_cell_type: HEK cells and renal DCT experimental_model: HEK mutant expression with complementary mouse/kidney-slice experiments limitations: Inference about obligatory kinase shutdown is disputed; model and adaptation time matter. cross_nutrient: Balance of kinase and phosphatase signaling controls Na/Cl transport responses to K. evidence_location: Discussion; WNK4-LLFF HEK experiment and acute-versus-prolonged restriction comparison. [yang-2021-ncc-off-switch] Roles of WNK4 and SPAK in K+-mediated dephosphorylation of the NaCl cotransporter (2021). https://pmc.ncbi.nlm.nih.gov/articles/PMC8174808/ DOI: 10.1152/ajprenal.00459.2020
    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