Potassium channels diversity, voltage-gated

Potassium channels represent a very large and diverse collection of membrane proteins which participate in important cellular functions regulating neuronal and cardial electrical patterns, release of neurotransmitters, muscle contractility, hormone secretion, secretion of fluids, and modulation of signal transduction pathways. Main categories of potassium channels are gated by voltage or an increase of intracellular calcium concentration (Escande and Henry 1993 Kaczorowski and Garcia 1999 Alexander et al. 2001). 

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