Potassium voltage-gated channel subfamily A member 2 (kcna2) Recombinant Protein | kcna2 recombinant protein

Recombinant Oncorhynchus mykiss Potassium voltage-gated channel subfamily A member 2 (kcna2), partial

• Purity: Greater or equal to 85% purity as determined by SDS-PAGE.
• Synonyms: Potassium voltage-gated channel subfamily A member 2 (kcna2); Recombinant Oncorhynchus mykiss Potassium voltage-gated channel subfamily A member 2 (kcna2); partial; kcna2 recombinant protein

• Host: E Coli or Yeast or Baculovirus or Mammalian Cell
• Purity/Purification: Greater or equal to 85% purity as determined by SDS-PAGE.
• Form/Format: Lyophilized or liquid (Format to be determined during the manufacturing process)
• Sequence Length: 494

• Species: Oncorhynchus mykiss (Rainbow trout) (Salmo gairdneri)
• Preparation and Storage: Store at -20 degrees C. For long-term storage, store at -20 degrees C or -80 degrees C. Store working aliquots at 4 degrees C for up to one week. Repeated freezing and thawing is not recommended.

NCBI and Uniprot Product Information

• NCBI GI #: 82221700
• UniProt Accession #: Q9I830
• Molecular Weight: 55,900 Da
• NCBI Official Full Name: Potassium voltage-gated channel subfamily A member 2
• UniProt Protein Name: Potassium voltage-gated channel subfamily A member 2
• Protein Family: Potassium voltage-gated channel subfamily
• UniProt Gene Name: kcna2

Uniprot Description

Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes, primarily in the brain and central nervous system. Prevents aberrant action potential firing and regulates neuronal output. Forms tetrameric potassium-selective channels through which potassium ions pass in accordance with their electrochemical gradient. The channel alternates between opened and closed conformations in response to the voltage difference across the membrane (). Can form functional homotetrameric channels and heterotetrameric channels with other family members; the channels characteristics depend critically on the types of channel-forming alpha subunits that are present (). Channel properties are modulated by cytoplasmic beta subunits that regulate the subcellular location of the alpha subunits (). In vivo, membranes probably contain a mixture of heteromeric potassium channel complexes, making it difficult to assign currents observed in intact tissues to any particular potassium channel family member. Homotetrameric KCNA2 forms a delayed-rectifier potassium channel that opens in response to membrane depolarization, followed by slow spontaneous channel closure (). Regulates neuronal excitability and plays a role as pacemaker in the regulation of neuronal action potentials (). KCNA2-containing channels play a presynaptic role and prevent hyperexcitability and aberrant action potential firing (). Response to toxins that are selective for KCNA2-containing potassium channels suggests that in Purkinje cells, dendritic subthreshold KCNA2-containing potassium channels prevent random spontaneous calcium spikes, suppressing dendritic hyperexcitability without hindering the generation of somatic action potentials, and thereby play an important role in motor coordination (). Plays a role in the induction of long-term potentiation of neuron excitability in the CA3 layer of the hippocampus ().