Potassium Channel (phospho Ser503) Antibody

Voltage-gated K+ channels are important determinants of neuronal membrane excitability. Moreover, differences in K+ channel expression patterns and densities contribute to the variations in action potential waveforms and repetitive firing patterns evident in different neuronal cell types (Maletic-Savatic et al., 1995; Pongs, 1999; Blaine and Ribera, 1998; Burger and Ribera, 1996) . The Kv3.1 potassium channel is expressed at high levels in neurons that characteristically fire rapid trains of action potentials (Gan et al., 1999) . Particularly high levels of this channel are found in neurons of the auditory brainstem. These neurons appear to participate in neural circuits that determine the intensity and timing of auditory stimuli and use this information to determine the location of sounds in space (von Hehn et al., 2004) .

Phosphopeptide corresponding to amino acid residues surrounding the phospho-Ser503 of the voltage-gated potassium channel Kv3.1, conjugated to keyhole limpet hemocyanin (KLH) .

Gan L, Hahn SJ, Kaczmarek LK (1999) Cell type-specific expression of the Kv3.1 gene is mediated by a negative element in the 5' untranslated region of the Kv3.1 promoter. J Neurochem 73:1350-1362.