• NatureSynthetic

Associated products


Our Abpromise guarantee covers the use of ab86641 in the following tested applications.

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

  • Purity70 - 90% by HPLC.

  • FormLiquid
  • Additional notes

    - First try to dissolve a small amount of peptide in either water or buffer. The more charged residues on a peptide, the more soluble it is in aqueous solutions.
    - If the peptide doesn’t dissolve try an organic solvent e.g. DMSO, then dilute using water or buffer.
    - Consider that any solvent used must be compatible with your assay. If a peptide does not dissolve and you need to recover it, lyophilise to remove the solvent.
    - Gentle warming and sonication can effectively aid peptide solubilisation. If the solution is cloudy or has gelled the peptide may be in suspension rather than solubilised.
    - Peptides containing cysteine are easily oxidised, so should be prepared in solution just prior to use.

  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

    Information available upon request.

General Info

  • Alternative names
    • ATFB4
    • cardiac voltage gated potassium channel accessory subunit 2
    • Kcne2
    • LQT5
    • LQT6
    • minimum potassium ion channel related peptide 1
    • Minimum potassium ion channel-related peptide 1
    • minK related peptide 1
    • MinK-related peptide 1
    • MIRP1
    • Potassium channel subunit beta MiRP1
    • potassium channel subunit, MiRP1
    • potassium voltage gated channel subfamily E member 2
    • potassium voltage gated channel, Isk related family, member 2
    • Potassium voltage-gated channel subfamily E member 2
    • voltage-gated K+ channel subunit MIRP1
    see all
  • FunctionAncillary protein that assembles as a beta subunit with a voltage-gated potassium channel complex of pore-forming alpha subunits. Modulates the gating kinetics and enhances stability of the channel complex. Associated with KCNH2/HERG is proposed to form the rapidly activating component of the delayed rectifying potassium current in heart (IKr). May associate with KCNQ2 and/or KCNQ3 and modulate the native M-type current. May associate with KCNQ1/KVLTQ1 and elicit a voltage-independent current. May associate with HCN1 and HCN2 and increase potassium current.
  • Tissue specificityHighly expressed in brain, heart, skeletal muscle, pancreas, placenta, kidney, colon and thymus. A small but significant expression is found in liver, ovary, testis, prostate, small intestine and leukocytes. Very low expression, nearly undetectable, in lung and spleen.
  • Involvement in diseaseDefects in KCNE2 are the cause of long QT syndrome type 6 (LQT6) [MIM:613693]. Long QT syndromes are heart disorders characterized by a prolonged QT interval on the ECG and polymorphic ventricular arrhythmias. They cause syncope and sudden death in response to exercise or emotional stress. KCNE2 mutants form channels that open slowly and close rapidly, thereby diminishing potassium currents.
    Defects in KCNE2 are the cause of atrial fibrillation familial type 4 (ATFB4) [MIM:611493]. Atrial fibrillation is a common disorder of cardiac rhythm that is hereditary in a small subgroup of patients. It is characterized by disorganized atrial electrical activity and ineffective atrial contraction promoting blood stasis in the atria and reduces ventricular filling. It can result in palpitations, syncope, thromboembolic stroke, and congestive heart failure.
  • Sequence similaritiesBelongs to the potassium channel KCNE family.
  • Cellular localizationMembrane.
  • Information by UniProt

References for Human KCNE2 peptide (ab86641)

ab86641 has not yet been referenced specifically in any publications.

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