Background: The Kv3.1b potassium channel is a voltage-gated channel protein which belongs to the delayed rectifier class and to the Shaw potassium channel subfamily. Potassium channels are mainly found in plasma membranes but are not generally distributed over the cell surface. Potassium channels catalyze the rapid permeation of potassium ions while rejecting biologically abundant potential competitors such as sodium, calcium and magnesium. Ion selectivity and high through put rate of potassium channels is accomplished by precise co-ordination of dehydrated potassium by the protein and multiple ion occupancy within the permeation pathway. All potassium channels carry out the formation of a transmembrane leak specific for potassium ions. Since cells almost universally maintain cytoplasmic potassium concentrations higher than those extracellularly, the opening of a potassium channel implies a negative ongoing change in electrical voltage across the cell membrane. This may result in termination of the action potential of electrically excitable cells including nerve, muscle and pancreatic beta cells. In nonÐexcitable cells, potassium channels play important roles in the cellular potassium recycling required for electrolyte balance effected by the renal epithelium.
Positive Control: Rat brain lysate.
Purification Method: Ammonium Sulfate Precipitation.
Source: Rabbits were immunized with a synthetic peptide derived from the rat Kv3.1b potassium channel conjugated to KLH.
References: 1. Luneau,C.Jet.al. 'Alternative splicing contributes to K+ channel diversity in the mammalian central nervous system.' Proc. Natl. Acad. Sci. U.S.A. 88 (9), 3932-3936 (1991)
2. Rettig, J et.al 'Characterization of a Shaw-related potassium channel family in ratbrain' EMBO J. 11 (7), 2473-2486 (1992)
3. Hartig,W.et.al 'Perineuronal nets in the rat medial nucleus of the trapezoid body surround neurons immunoreactive for various amino acids, calcium-binding proteins and the potassium channel subunit Kv3.1b.' Brain Res. 899(1-2):123-33 (2001)
4. Osipenko,OH et.al Potential role for kv3.1b channels as oxygen sensors.Circ Res.;86(5):534-40 (2000).
UniProt: P25122.
Caution: This product is intended FOR RESEARCH USE ONLY, and FOR TESTS IN VITRO, not for use in diagnostic or therapeutic procedures involving humans or animals.
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