• Product nameAnti-Kv4.3 antibody [S75-41]
    See all Kv4.3 primary antibodies
  • Description
    Mouse monoclonal [S75-41] to Kv4.3
  • SpecificityNo cross reactivity against Rat Kv4.2 in transfected cells.
  • Tested applicationsSuitable for: ICC/IF, WB, IP, IHC-P, IHC-Fr, Flow Cytmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human, Xenopus laevis
  • Immunogen

    Fusion protein, corresponding to C terminal amino acids 415-636 of Rat Kv4.3

  • Positive control
    • Rat brain membrane preparations.



Our Abpromise guarantee covers the use of ab99045 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
ICC/IF Use a concentration of 0.1 - 10 µg/ml. 0.1-1.0ug/mL (Perox), 1.0-10ug/mL (IF)
WB Use a concentration of 1 µg/ml. Predicted molecular weight: 71 kDa. 1µg/mL of ab99045 was sufficient for detection of Kv4.3 in 20µg of Rat brain lysate by colorimetric immunoblot analysis using goat anti-mouse IgG:HRP as the secondary antibody.
IP Use at an assay dependent concentration.
IHC-P Use a concentration of 0.1 - 1 µg/ml.
IHC-Fr Use a concentration of 0.1 - 1 µg/ml.
Flow Cyt Use 1µg for 106 cells. ab170190-Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.


  • FunctionPore-forming (alpha) subunit of voltage-gated rapidly inactivating A-type potassium channels. May contribute to I(To) current in heart and I(Sa) current in neurons. Channel properties are modulated by interactions with other alpha subunits and with regulatory subunits.
  • Tissue specificityHighly expressed in heart and brain, in particular in cortex, cerebellum, amygdala and caudate nucleus. Detected at lower levels in liver, skeletal muscle, kidney and pancreas. Isoform 1 predominates in most tissues. Isoform 1 and isoform 2 are detected at similar levels in brain, skeletal muscle and pancreas.
  • Sequence similaritiesBelongs to the potassium channel family. D (Shal) (TC 1.A.1.2) subfamily. Kv4.3/KCND3 sub-subfamily.
  • DomainThe segment S4 is probably the voltage-sensor and is characterized by a series of positively charged amino acids at every third position.
  • Cellular localizationMembrane. Cell membrane > sarcolemma.
  • Information by UniProt
  • Database links
  • Alternative names
    • KCND 3 antibody
    • KCND 3L antibody
    • KCND 3S antibody
    • Kcnd3 antibody
    • KCND3_HUMAN antibody
    • KCND3L antibody
    • KCND3S antibody
    • KSHIVB antibody
    • Kv 4.3 antibody
    • MGC14203 antibody
    • MGC142037 antibody
    • OTTHUMP00000063948 antibody
    • Potassium ioinic channel Kv4.3 antibody
    • Potassium voltage gated channel Shal related subfamily member 3 antibody
    • Potassium voltage gated channel subfamily D member 3 antibody
    • Potassium voltage-gated channel subfamily D member 3 antibody
    • Sha1 related potassium channel Kv4.3 antibody
    • Voltage gated K+ channel antibody
    • Voltage gated potassium channel Kv4.3 antibody
    • Voltage gated potassium channel subunit Kv4.3 antibody
    • Voltage-gated potassium channel subunit Kv4.3 antibody
    see all

Anti-Kv4.3 antibody [S75-41] images

  • ab99045 staining Kv4.3 in Mouse cerebellum tissue sections by Immunohistochemistry.

  • ab99045 staining Kv4.3 in Mouse cerebellum tissue sections by Immunohistochemistry.

  • Anti-Kv4.3 antibody [S75-41] (ab99045) at 1/1000 dilution + Rat brain membrane tissue lysate

    Predicted band size : 71 kDa
  • Overlay histogram showing SH-SY5Y cells stained with ab99045 (red line). The cells were fixed with 4% paraformaldehyde (10 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab99045, 1µg/1x106 cells) for 30 min at 22ºC. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22ºC. Isotype control antibody (black line) was mouse IgG1 [ICIGG1] (ab91353, 2µg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed. This antibody gave a positive signal in SH-SY5Y cells fixed with 80% methanol (5 min)/permeabilized with 0.1% PBS-Tween for 20 min used under the same conditions.

References for Anti-Kv4.3 antibody [S75-41] (ab99045)

This product has been referenced in:
  • Liu DH  et al. Voltage dependent potassium channel remodeling in murine intestinal smooth muscle hypertrophy induced by partial obstruction. PLoS One 9:e86109 (2014). WB ; Mouse . Read more (PubMed: 24516526) »
  • Tang YQ  et al. Auxiliary KChIP4a suppresses A-type K+ current through endoplasmic reticulum (ER) retention and promoting closed-state inactivation of Kv4 channels. J Biol Chem 288:14727-41 (2013). WB ; Human . Read more (PubMed: 23576435) »

See all 2 Publications for this product

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