• Product name
  • Description
    Rabbit polyclonal to KCNJ5
  • Host species
  • Tested applications
    Suitable for: WB, IHC-Pmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Horse, Cow, Pig, Chimpanzee, Macaque monkey, Gorilla, Chinese hamster, Orangutan, Elephant
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 1 - 100 of Human KCNJ5 .

  • Positive control
    • This antibody gave a positive signal in Human Testis tissue lysate as well as the following whole cell lysates: A489; MCF7; A549. It also gave a positive signal in FFPE human pancreas tissue sections



Our Abpromise guarantee covers the use of ab113699 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use a concentration of 1 µg/ml. Detects a band of approximately 50 kDa (predicted molecular weight: 48 kDa).
IHC-P Use a concentration of 1 µg/ml. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.


  • Function
    This potassium channel is controlled by G proteins. Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. The inward rectification is mainly due to the blockage of outward current by internal magnesium. Can be blocked by external barium.
  • Tissue specificity
    Islets, exocrine pancreas and heart.
  • Involvement in disease
    Defects in KCNJ5 are the cause of long QT syndrome type 13 (LQT13) [MIM:613485]. It is a heart disorder characterized by a prolonged QT interval on the ECG and polymorphic ventricular arrhythmias. They cause syncope and sudden death in response to excercise or emotional stress, and can present with a sentinel event of sudden cardiac death in infancy.
  • Sequence similarities
    Belongs to the inward rectifier-type potassium channel (TC 1.A.2.1) family. KCNJ5 subfamily.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • Cardiac ATP sensitive potassium channel antibody
    • Cardiac inward rectifier antibody
    • CIR antibody
    • G protein activated inward rectifier potassium channel 4 antibody
    • G protein-activated inward rectifier potassium channel 4 antibody
    • GIRK 4 antibody
    • GIRK-4 antibody
    • GIRK4 antibody
    • Heart KATP channel antibody
    • Inward rectifier K(+) channel Kir3.4 antibody
    • Inward rectifier K+ channel KIR3.4 antibody
    • Inward rectifier potassium channel KIR3.4 antibody
    • inwardly rectifying subfamily J member 5 antibody
    • IRK-4 antibody
    • IRK5_HUMAN antibody
    • KATP 1 antibody
    • KATP-1 antibody
    • KATP1 antibody
    • KCNJ 5 antibody
    • Kcnj5 antibody
    • KIR 3.4 antibody
    • KIR3.4 antibody
    • LQT13 antibody
    • Potassium channel antibody
    • Potassium channel inwardly rectifying subfamily J member 5 antibody
    • Potassium inwardly rectifying channel J5 antibody
    • Potassium inwardly rectifying channel subfamily J member 5 antibody
    • potassium voltage-gated channel subfamily J member 5 antibody
    see all


  • All lanes : Anti-KCNJ5 antibody (ab113699) at 1 µg/ml

    Lane 1 : Human testis tissue lysate - total protein (ab30257)
    Lane 2 : A498 (Human Kidney Carcinoma) Whole Cell Lysate
    Lane 3 : MCF7 (Human breast adenocarcinoma cell line) Whole Cell Lysate
    Lane 4 : A549 (Human lung adenocarcinoma epithelial cell line) Whole Cell Lysate

    Lysates/proteins at 10 µg per lane.

    All lanes : Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 dilution

    Developed using the ECL technique.

    Performed under reducing conditions.

    Predicted band size: 48 kDa
    Observed band size: 50 kDa (why is the actual band size different from the predicted?)
    Additional bands at: 120 kDa. We are unsure as to the identity of these extra bands.

    Exposure time: 1 minute
  • IHC image of KCNJ5 staining in human pancreas formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab113699, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

    For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.


ab113699 has not yet been referenced specifically in any publications.

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