Recombinant Human Potassium channel subfamily K member 4 (KCNK4)

Code CSB-CF873692HU
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Source in vitro E.coli expression system
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Product Details

Target Names
KCNK4
Uniprot No.
Alternative Names
KCNK4; TRAAK; Potassium channel subfamily K member 4; TWIK-related arachidonic acid-stimulated potassium channel protein; Two pore potassium channel KT4.1; Two pore K(+ channel KT4.1
Species
Homo sapiens (Human)
Expression Region
1-393
Target Protein Sequence
MRSTTLLALLALVLLYLVSGALVFRALEQPHEQQAQRELGEVREKFLRAHPCVSDQELGL LIKEVADALGGGADPETNSTSNSSHSAWDLGSAFFFSGTIITTIGYGNVALRTDAGRLFC IFYALVGIPLFGILLAGVGDRLGSSLRHGIGHIEAIFLKWHVPPELVRVLSAMLFLLIGC LLFVLTPTFVFCYMEDWSKLEAIYFVIVTLTTVGFGDYVAGADPRQDSPAYQPLVWFWIL LGLAYFASVLTTIGNWLRVVSRRTRAEMGGLTAQAASWTGTVTARVTQRAGPAAPPPEKE QPLLPPPPCPAQPLGRPRSPSPPEKAQPPSPPTASALDYPSENLAFIDESSDTQSERGCP LPRAPRGRRRPNPPRKPVRPRGPGRPRDKGVPV
Protein Length
full length protein
Tag Info
Tag type will be determined during the manufacturing process.
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form
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 before Lyophilization
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℃/-80℃. 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
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet
Please contact us to get it.

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Target Background

Function
Voltage-insensitive potassium channel. Channel opening is triggered by mechanical forces that deform the membrane. Channel opening is triggered by raising the intracellular pH to basic levels. The channel is inactive at 24 degrees Celsius (in vitro); raising the temperature to 37 degrees Celsius increases the frequency of channel opening, with a further increase in channel activity when the temperature is raised to 42 degrees Celsius. Plays a role in the perception of pain caused by heat. Plays a role in the sensory perception of pain caused by pressure.
Gene References into Functions
  1. Functional alanine-mutagenesis screens of TASK-1 and TRAAK were used to build an in silico model of the TASK-1 cap. PMID: 26794006
  2. KCNK4 promoter methylation is associated with Breast Cancer. PMID: 25809865
  3. How ion channels sense mechanical force: insights from mechanosensitive K2P channels TRAAK, TREK1, and TREK2. PMID: 26332952
  4. findings uncover a unique aspect of potassium channel modulation, indicate a means for how the channel C-terminal cytoplasmic domain affects the C-type gate, and suggest how lipids and bilayer inner leaflet deformations gate the channel. PMID: 25500157
  5. TRAAK is responsive to mechanical forces similar to the ion channel Piezo1; mechanical activation of TRAAK can electrically counter Piezo1 activation. PMID: 24550493
  6. structure reveals a domain-swapped chain connectivity enabled by the helical cap that exchanges two opposing outer helices 180 degrees around the channel PMID: 23341632
  7. crystal structure of TRAAK at 3.8 angstroms resolution; channel comprises 2 protomers that create 2-fold symmetric K(+) channel; extracellular surface has a helical cap; 2 diagonally opposed gate-forming inner helices form membrane-interacting structures PMID: 22282805
  8. role for TREK-1 in contributing to uterine quiescence during gestation PMID: 20811500
  9. Human TASK-3 was cloned and expressed; protein sequence and activity compared to similar two pore domain potassium channels, including KCNK4 (TRAAK). PMID: 11042359

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Subcellular Location
Cell membrane; Multi-pass membrane protein.
Protein Families
Two pore domain potassium channel (TC 1.A.1.8) family
Database Links

HGNC: 6279

OMIM: 605720

KEGG: hsa:50801

STRING: 9606.ENSP00000378033

UniGene: Hs.647233

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