Recombinant Human Voltage-gated potassium channel subunit beta-2 (KCNAB2)

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Code CSB-EP012014HU
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Purity
Greater than 90% as determined by SDS-PAGE.
Target Names
KCNAB2
Uniprot No.
Research Area
Neuroscience
Alternative Names
KCNAB2; KCNA2B; KCNK2Voltage-gated potassium channel subunit beta-2; EC 1.1.1.-; K(+) channel subunit beta-2; Kv-beta-2; hKvbeta2
Species
Homo sapiens (Human)
Source
E.coli
Expression Region
1-367aa
Target Protein Sequence
MYPESTTGSPARLSLRQTGSPGMIYSTRYGSPKRQLQFYRNLGKSGLRVSCLGLGTWVTFGGQITDEMAEQLMTLAYDNGINLFDTAEVYAAGKAEVVLGNIIKKKGWRRSSLVITTKIFWGGKAETERGLSRKHIIEGLKASLERLQLEYVDVVFANRPDPNTPMEETVRAMTHVINQGMAMYWGTSRWSSMEIMEAYSVARQFNLTPPICEQAEYHMFQREKVEVQLPELFHKIGVGAMTWSPLACGIVSGKYDSGIPPYSRASLKGYQWLKDKILSEEGRRQQAKLKELQAIAERLGCTLPQLAIAWCLRNEGVSSVLLGASNADQLMENIGAIQVLPKLSSSIIHEIDSILGNKPYSKKDYRS
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
57.0kDa
Protein Length
Full Length
Tag Info
N-terminal 6xHis-SUMO-tagged
Form
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
3-7 business days
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.
Description

Inserting the gene encoding the Human KCNAB2 protein (1-367aa) into a plasmid vector results in the creation of recombinant plasmid, which is introduced into e.coli cells. e.coli cells that can survive in the presence of a specific antibiotic are selected, indicating successful uptake of the recombinant plasmid. The e.coli cells containing the recombinant plasmid are cultured under conditions promoting the expression of the gene of interest. A N-terminal 6xHis-SUMO tag is linked to the protein. After expression, affinity purification is used to isolate and purify the recombinant Human KCNAB2 protein from the cell lysate. Denaturing SDS-PAGE is then applied to resolve the resulting recombinant Human KCNAB2 protein, revealing a purity level exceeding 90%.

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Target Background

Function
Cytoplasmic potassium channel subunit that modulates the characteristics of the channel-forming alpha-subunits. Contributes to the regulation of nerve signaling, and prevents neuronal hyperexcitability. Promotes expression of the pore-forming alpha subunits at the cell membrane, and thereby increases channel activity. Promotes potassium channel closure via a mechanism that does not involve physical obstruction of the channel pore. Promotes KCNA4 channel closure. Modulates the functional properties of KCNA5. Enhances KCNB2 channel activity. Binds NADPH and has NADPH-dependent aldoketoreductase activity. Has broad substrate specificity and can catalyze the reduction of methylglyoxal, 9,10-phenanthrenequinone, prostaglandin J2, 4-nitrobenzaldehyde, 4-nitroacetophenone and 4-oxo-trans-2-nonenal (in vitro).
Gene References into Functions
  1. The results show that KvBeta 2 dysregulation of Kv4.3 is involved in the pathogenesis of Brugada Syndrome. This new finding also expands the list of genes associated with susceptibility to BrS and may contribute to improve molecular diagnosis of this cardiac arrhythmia disorder. PMID: 27287695
  2. Results identified gain and loss of function mutations which lead to increased and decreased potassium currents enhancing AF. PMID: 23264583
  3. Incretin regulation of beta-cell function involves the acetylation of Kv beta2. PMID: 23390957
Subcellular Location
Cytoplasm. Membrane; Peripheral membrane protein; Cytoplasmic side. Cell membrane; Peripheral membrane protein; Cytoplasmic side. Cell projection, axon. Cell junction, synapse, synaptosome. Cytoplasm, cytoskeleton.
Protein Families
Shaker potassium channel beta subunit family
Tissue Specificity
Detected in myelinated nerve fibers in the spinal cord, in the juxtaparanodal region of the nodes of Ranvier, but also in the paranodal region. Detected in hippocampus (at protein level). Detected in hippocampus.
Database Links

HGNC: 6229

OMIM: 601142

KEGG: hsa:8514

STRING: 9606.ENSP00000367323

UniGene: Hs.440497

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