07-2263 Anti-WNK4 Antibody

100 µL  
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      Key Spec Table

      Species ReactivityKey ApplicationsHostFormatAntibody Type
      HWBRbAffinity PurifiedPolyclonal Antibody
      Catalogue Number07-2263
      DescriptionAnti-WNK4 Antibody
      Alternate Names
      • WNK lysine deficient protein kinase 4
      • protein kinase, lysine deficient 4
      • Protein kinase with no lysine 4
      • serine/threonine-protein kinase WNK4
      • Protein kinase lysine-deficient 4
      Background InformationWNK4 is a serine-threonine protein kinase that is commonly expressed in the distal nephron. Mutations in WNK1 and WNK4 cause pseudohypoaldosteronism type II, which causes hypertension, hyperkalemia, hyperchloremia and metabolic acidosis. WNK4 has been shown to decrease Na-Cl cotransporter activity and the potassium channel by removing it from the cell surface. It is thought that activating WNK4 inhibits the activity of WNK1. WNK4 has been shown to play a role in regulating blood pressure in addition to potassium homeostasis.
      Product Information
      FormatAffinity Purified
      • HEK293 cell lysate
      PresentationPurified rabbit polyclonal in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.
      ApplicationThis WNK4 antibody is validated for use in WB for the detection of the WNK4 protein.
      Key Applications
      • Western Blotting
      Biological Information
      ImmunogenKLH-conjugated linear peptide corresponding to the N-terminus of human WNK4.
      ConcentrationPlease refer to the Certificate of Analysis for the lot-specific concentration.
      SpecificityThis antibody recognizes WNK4 at the N-terminus.
      Species Reactivity
      • Human
      Species Reactivity NoteDemonstrated to react with human. Other homologies: Rat (94% sequence homology).
      Antibody TypePolyclonal Antibody
      Entrez Gene Number
      Entrez Gene SummaryThis gene encodes a member of the WNK family of serine-threonine protein kinases. The kinase is part of the tight junction complex in kidney cells, and regulates the balance between NaCl reabsorption and K(+) secretion. The kinase regulates the activities of several types of ion channels, cotransporters, and exchangers involved in electrolyte flux in epithelial cells. Mutations in this gene result in pseudohypoaldosteronism type IIB.
      Gene Symbol
      • PHA2B
      • WNK4
      • PRKWNK4
      Purification MethodAffinity Purfied
      UniProt Number
      UniProt SummaryFUNCTION: Regulates the activity of the thiazide-sensitive Na-Cl cotransporter, SLC12A3, by phosphorylation which appears to prevent membrane trafficking of SLC12A3. Also inhibits the renal K+ channel, KCNJ1, via a kinase-independent mechanism by which it induces clearance of the protein from the cell surface by clathrin-dependent endocytosis. WNK4 appears to act as a molecular switch that can vary the balance between NaCl reabsorption and K+ secretion to maintain integrated homeostasis (By similarity). UniProtKB Q80UE6

      CATALYTIC ACTIVITY: ATP + a protein = ADP + a phosphoprotein.

      COFACTOR: Magnesium (By similarity). UniProtKB Q9H4A3

      ENZYME REGULATION: Activation requires autophosphorylation of Ser-335. Phosphorylation of Ser-331 also promotes increased activity (By similarity). UniProtKB Q9JIH7

      SUBUNIT STRUCTURE: Interacts with the C-terminal region of KCNJ1 By similarity. UniProtKB Q80UE6

      SUBCELLULAR LOCATION: Cell junction › tight junction (By similarity). Note: Present exclusively in intercellular junctions in the distal convoluted tubule and in both the cytoplasm and intercellular junctions in the cortical collecting duct. WNK4 is part of the tight junction complex (By similarity).

      TISSUE SPECIFICTY: Expressed in kidney, colon and skin. Ref.4

      INVOLVEMENT IN DISEASE: Defects in WNK4 are a cause of pseudohypoaldosteronism type II (PHAII) [MIM:145260]. PHAII is an autosomal dominant disease characterized by severe hypertension, hyperkalemia, and sensitivity to thiazide diuretics which may result from a chloride shunt in the renal distal nephron.

      SEQUENCE SIMILARITIES: Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. WNK subfamily.

      Contains 1 protein kinase domain.

      CAUTION: Cys-203 is present instead of the conserved Lys which is expected to be an active site residue. Lys-186 appears to fulfill the required catalytic function. UniProtKB Q9JIH7

      SEQUENCE CUTION: The sequence BAC04669.1 differs from that shown. Reason: Erroneous initiation.

      The sequence CAC48387.1 differs from that shown. Reason: Frameshift at position 4.
      Molecular Weight~150 kDa observed. .This protein has 3 isoforms produced by alternative splicing with molecular weights of 134, 73 & 126. Hengl, T., et al. (2010). PNAS. 107(13):6052–6057.
      Physicochemical Information
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Quality AssuranceEvaluated by Western Blot in HEK293 cell lysate.

      Western Blot Analysis: 1:500 dilution of this antibody detected WNK4 on 10 µg of HEK293 cell lysate.
      Usage Statement
      • Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
      Storage and Shipping Information
      Storage ConditionsStable for 1 year at 2-8°C from date of receipt.
      Packaging Information
      Material Size100 µL
      Transport Information
      Supplemental Information

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      Life Science Research > Antibodies and Assays > Primary Antibodies