Anti-Maxi Potassium channel alpha antibody [S6-60] (ab99046)


  • Product nameAnti-Maxi Potassium channel alpha antibody [S6-60]
    See all Maxi Potassium channel alpha primary antibodies
  • Description
    Mouse monoclonal [S6-60] to Maxi Potassium channel alpha
  • Tested applicationsSuitable for: ICC/IF, WB, IP, IHC-P, IHC-Fr, Flow Cytmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human, Zebrafish
  • Immunogen

    Fusion protein, corresponding to C terminal amino acids 690-1196 of Mouse Maxi Potassium channel alpha (AAA39746).

  • EpitopeEpitope mapped within amino acids 690–715 (Mouse Maxi Potassium channel alpha).
  • Positive control
    • Mouse brain lysate.



Our Abpromise guarantee covers the use of ab99046 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. Detects a band of approximately 110-130 kDa (predicted molecular weight: 134 kDa). 1 µg/mL of ab99046 was sufficient for detection of Maxi Potassium channel alpha in 20µg of mouse 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 0.5µg for 106 cells. ab170191-Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody.


  • FunctionPotassium channel activated by both membrane depolarization or increase in cytosolic Ca(2+) that mediates export of K(+). It is also activated by the concentration of cytosolic Mg(2+). Its activation dampens the excitatory events that elevate the cytosolic Ca(2+) concentration and/or depolarize the cell membrane. It therefore contributes to repolarization of the membrane potential. Plays a key role in controlling excitability in a number of systems, such as regulation of the contraction of smooth muscle, the tuning of hair cells in the cochlea, regulation of transmitter release, and innate immunity. In smooth muscles, its activation by high level of Ca(2+), caused by ryanodine receptors in the sarcoplasmic reticulum, regulates the membrane potential. In cochlea cells, its number and kinetic properties partly determine the characteristic frequency of each hair cell and thereby helps to establish a tonotopic map. Kinetics of KCNMA1 channels are determined by alternative splicing, phosphorylation status and its combination with modulating beta subunits. Highly sensitive to both iberiotoxin (IbTx) and charybdotoxin (CTX).
  • Tissue specificityWidely expressed. Except in myocytes, it is almost ubiquitously expressed.
  • Involvement in diseaseGeneralized epilepsy and paroxysmal dyskinesia
  • Sequence similaritiesBelongs to the potassium channel family. Calcium-activated (TC 1.A.1.3) subfamily. KCa1.1/KCNMA1 sub-subfamily.
    Contains 1 RCK N-terminal domain.
  • DomainThe S0 segment is essential for the modulation by the accessory beta subunits KCNMB1, KCNMB2, KCNMB3 and KCNMB4.
    The S4 segment, which is characterized by a series of positively charged amino acids at every third position, is part of the voltage-sensor.
    The pore-forming domain (also referred as P region) is imbedded into the membrane, and forms the selectivity filter of the pore. It contains the signature sequence of potassium channels that displays selectivity to potassium.
    The RCK N-terminal domain mediates the homotetramerization, thereby promoting the assembly of monomers into functional potassium channel. It includes binding sites for Ca(2+) and Mg(2+).
    The calcium bowl constitutes one of the Ca(2+) sensors and probably acts as a Ca(2+)-binding site. There are however other Ca(2+) sensors regions required for activation of the channel.
    The heme-binding motif mediates inhibition of channel activation by heme. Carbon monoxide-bound heme leads to increased channel activation.
  • Post-translational
    Phosphorylated (Probable). Phosphorylation by kinases such as PKA and/or PKG. In smooth muscles, phosphorylation affects its activity.
    Palmitoylation by ZDHHC22 and ZDHHC23 within the intracellular linker between the S0 and S1 transmembrane domains regulates localization to the plasma membrane. Depalmitoylated by LYPLA1 and LYPLAL1, leading to retard exit from the trans-Golgi network.
  • Cellular localizationCell membrane.
  • Information by UniProt
  • Database links
  • Alternative names
    • subfamily M subunit alpha-1 antibody
    • BK channel antibody
    • BKCA alpha antibody
    • BKCA alpha subunit antibody
    • BKTM antibody
    • Calcium-activated potassium channel antibody
    • Calcium-activated potassium channel subunit alpha-1 antibody
    • Drosophila slowpoke like antibody
    • hSlo antibody
    • K(VCA)alpha antibody
    • KCa1.1 antibody
    • KCMA1_HUMAN antibody
    • KCNMA antibody
    • KCNMA1 antibody
    • Maxi K channel antibody
    • Maxi Potassium channel alpha antibody
    • MaxiK antibody
    • SAKCA antibody
    • SLO alpha antibody
    • SLO antibody
    • Slo homolog antibody
    • Slo-alpha antibody
    • Slo1 antibody
    • Slowpoke homolog antibody
    see all

Anti-Maxi Potassium channel alpha antibody [S6-60] images

  • Anti-Maxi Potassium channel alpha antibody [S6-60] (ab99046) at 1/1000 dilution + Rat brain membrane tissue lysate

    Predicted band size : 134 kDa
  • ab99046 staining Maxi Potassium channel alpha in Mouse cerebellum tissue sections by Immunohistochemistry.

  • Overlay histogram showing HeLa cells stained with ab99046 (red line). The cells were fixed with 80% methanol (5 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 (ab99046, 0.5µg/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 IgG2a [ICIGG2A] (ab91361, 1µg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed.

References for Anti-Maxi Potassium channel alpha antibody [S6-60] (ab99046)

This product has been referenced in:
  • Liu CY  et al. The role of large-conductance, calcium-activated potassium channels in a rat model of trigeminal neuropathic pain. Cephalalgia N/A:N/A (2014). Read more (PubMed: 24820887) »

See 1 Publication for this product

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