KCNC3 Antibody – Mouse Monoclonal

The Shaker gene family of Drosophila encodes components of voltage-gated potassium channels and is comprised of four subfamilies. Based on sequence similarity, this gene is similar to one of these subfamilies, namely the Shaw subfamily. The protein encoded by this gene belongs to the delayed rectifier class of channel proteins and is an integral membrane protein that mediates the voltage-dependent potassium ion permeability of excitable membranes. Alternate splicing results in several transcript variants. [provided by RefSeq, Mar 2014]

Kv3.3: This protein mediates the voltage-dependent potassium ion permeability of excitable membranes. Assuming opened or closed conformations in response to the voltage difference across the membrane, the protein forms a potassium-selective channel through which potassium ions may pass in accordance with their electrochemical gradient. Defects in KCNC3 are the cause of spinocerebellar ataxia type 13 (SCA13). Spinocerebellar ataxia is a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to degeneration of the cerebellum with variable involvement of the brainstem and spinal cord. SCA13 is an autosomal dominant cerebellar ataxia (ADCA) characterized by slow progression and variable age at onset, ranging from childhood to late adulthood. Mental retardation can be present in some patients. Belongs to the potassium channel family. C (Shaw) (TC 1.A.1.2) subfamily. Kv3.3/KCNC3 sub-subfamily.

Protein type: Membrane protein, integral; Membrane protein, multi-pass

Chromosomal Location of Human Ortholog: 19q13.33

Cellular Component: voltage-gated potassium channel complex; integral to membrane; plasma membrane; nerve terminal; axolemma; neuromuscular junction

Molecular Function: voltage-gated potassium channel activity; delayed rectifier potassium channel activity

Biological Process: synaptic transmission; regulation of neurotransmitter secretion; potassium ion transport; protein homooligomerization

Disease: Spinocerebellar Ataxia 13