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Kv2.1/KCNB1 Protein (AA 1-858) (rho-1D4 tag)

Crystallography grade KCNB1 Origin: Human Host: Insect Cells Recombinant >95 % as determined by SDS PAGE, Size Exclusion Chromatography and Western Blot. ELISA, WB, Crys, SDS
Catalog No. ABIN3093258
  • Target See all Kv2.1/KCNB1 (KCNB1) Proteins
    Kv2.1/KCNB1 (KCNB1) (Potassium Voltage-Gated Channel, Shab-Related Subfamily, Member 1 (KCNB1))
    Protein Type
    Recombinant
    Protein Characteristics
    AA 1-858
    Origin
    • 4
    • 3
    Human
    Source
    • 6
    • 1
    Insect Cells
    Purification tag / Conjugate
    This Kv2.1/KCNB1 protein is labelled with rho-1D4 tag.
    Application
    ELISA, Western Blotting (WB), Crystallization (Crys), SDS-PAGE (SDS)
    Sequence
    MPAGMTKHGS RSTSSLPPEP MEIVRSKACS RRVRLNVGGL AHEVLWRTLD RLPRTRLGKL RDCNTHDSLL EVCDDYSLDD NEYFFDRHPG AFTSILNFYR TGRLHMMEEM CALSFSQELD YWGIDEIYLE SCCQARYHQK KEQMNEELKR EAETLREREG EEFDNTCCAE KRKKLWDLLE KPNSSVAAKI LAIISIMFIV LSTIALSLNT LPELQSLDEF GQSTDNPQLA HVEAVCIAWF TMEYLLRFLS SPKKWKFFKG PLNAIDLLAI LPYYVTIFLT ESNKSVLQFQ NVRRVVQIFR IMRILRILKL ARHSTGLQSL GFTLRRSYNE LGLLILFLAM GIMIFSSLVF FAEKDEDDTK FKSIPASFWW ATITMTTVGY GDIYPKTLLG KIVGGLCCIA GVLVIALPIP IIVNNFSEFY KEQKRQEKAI KRREALERAK RNGSIVSMNM KDAFARSIEM MDIVVEKNGE NMGKKDKVQD NHLSPNKWKW TKRTLSETSS SKSFETKEQG SPEKARSSSS PQHLNVQQLE DMYNKMAKTQ SQPILNTKES AAQSKPKEEL EMESIPSPVA PLPTRTEGVI DMRSMSSIDS FISCATDFPE ATRFSHSPLT SLPSKTGGST APEVGWRGAL GASGGRFVEA NPSPDASQHS SFFIESPKSS MKTNNPLKLR ALKVNFMEGD PSPLLPVLGM YHDPLRNRGS AAAAVAGLEC ATLLDKAVLS PESSIYTTAS AKTPPRSPEK HTAIAFNFEA GVHQYIDADT DDEGQLLYSV DSSPPKSLPG STSPKFSTGT RSEKNHFESS PLPTSPKFLR QNCIYSTEAL TGKGPSGQEK CKLENHISPD VRVLPGGGAH GSTRDQSI
    Sequence without tag. Tag location is at the discretion of the manufacturer. If you have a special request, please contact us.
    Characteristics
    • Made in Germany - from design to production - by highly experienced protein experts.
    • Human KCNB1 Protein (raised in Insect Cells) purified by multi-step, protein-specific process to ensure crystallization grade.
    • State-of-the-art algorithm used for plasmid design (Gene synthesis).

    This protein is a made to order protein and will be made for the first time for your order. Our experts in the lab will ensure that you receive a correctly folded protein.

    The big advantage of ordering our made-to-order proteins in comparison to ordering custom made proteins from other companies is that there is no financial obligation in case the protein cannot be expressed or purified.

    In the unlikely event that the protein cannot be expressed or purified we do not charge anything (other companies might charge you for any performed steps in the expression process for custom-made proteins, e.g. fees might apply for the expression plasmid, the first expression experiments or purification optimization).

    When you order this made-to-order protein you will only pay upon receival of the correctly folded protein. With no financial risk on your end you can rest assured that our experienced protein experts will do everything to make sure that you receive the protein you ordered.

    The concentration of our recombinant proteins is measured using the absorbance at 280nm. The protein's absorbance will be measured in several dilutions and is measured against its specific reference buffer.

    The concentration of the protein is calculated using its specific absorption coefficient. We use the Expasy's protparam tool to determine the absorption coefficient of each protein.

    Purification
    Three step purification of membrane proteins expressed in baculovirus infected SF9 insect cells:
    1. Membrane proteins are fractioned by ultracentrifugation and subsequently solubilized with different detergents (detergent screen). Samples are analyzed by Western blot.
    2. The best performing detergent is used for solubilization and the proteins are purified via their rho1D4 tag via two rho1D4 antibody columns: one DTT resistant, the other one not. Eluate fractions are analyzed by Western blot.
    3. Protein containing fractions of the best purification are subjected to second purification step through size exclusion chromatograph. Eluate fractions are analyzed by SDS-PAGE and Western blot.
    Purity
    >95 % as determined by SDS PAGE, Size Exclusion Chromatography and Western Blot.
    Sterility
    0.22 μm filtered
    Endotoxin Level
    Protein is endotoxin-free.
    Grade
    Crystallography grade
    Top Product
    Discover our top product KCNB1 Protein
  • Application Notes
    In addition to the applications listed above we expect the protein to work for functional studies as well. As the protein has not been tested for functional studies yet we cannot offer a gurantee though.
    Comment

    In cases in which it is highly likely that the recombinant protein with the default tag will be insoluble our protein lab may suggest a higher molecular weight tag (e.g. GST-tag) instead to increase solubility. We will discuss all possible options with you in detail to assure that you receive your protein of interest.

    Restrictions
    For Research Use only
  • Format
    Liquid
    Buffer
    100 mM NaCL, 20 mM Hepes, 10% glycerol. pH value is at the discretion of the manufacturer.
    Handling Advice
    Avoid repeated freeze-thaw cycles.
    Storage
    -80 °C
    Storage Comment
    Store at -80°C.
    Expiry Date
    Unlimited (if stored properly)
  • Target
    Kv2.1/KCNB1 (KCNB1) (Potassium Voltage-Gated Channel, Shab-Related Subfamily, Member 1 (KCNB1))
    Alternative Name
    KCNB1 (KCNB1 Products)
    Synonyms
    KCNB1 Protein, Kcnb1 Protein, Kcr1-1 Protein, Kv2.1 Protein, Shab Protein, DRK1PC Protein, DRK1 Protein, KV2.1 Protein, h-DRK1 Protein, potassium voltage-gated channel subfamily B member 1 Protein, potassium voltage-gated channel, Shab-related subfamily, member 1 Protein, potassium channel, voltage gated Shab related subfamily B, member 1 Protein, potassium voltage gated channel, Shab-related subfamily, member 1 Protein, KCNB1 Protein, kcnb1 Protein, LOC100541632 Protein, Kcnb1 Protein
    Background
    Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes, primarily in the brain, but also in the pancreas and cardiovascular system. Contributes to the regulation of the action potential (AP) repolarization, duration and frequency of repetitive AP firing in neurons, muscle cells and endocrine cells and plays a role in homeostatic attenuation of electrical excitability throughout the brain (PubMed:23161216). Plays also a role in the regulation of exocytosis independently of its electrical function (By similarity). 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. Homotetrameric channels mediate a delayed-rectifier voltage-dependent outward potassium current that display rapid activation and slow inactivation in response to membrane depolarization (PubMed:8081723, PubMed:1283219, PubMed:10484328, PubMed:12560340, PubMed:19074135, PubMed:19717558, PubMed:24901643). Can form functional homotetrameric and heterotetrameric channels that contain variable proportions of KCNB2, channel properties depend on the type of alpha subunits that are part of the channel (By similarity). Can also form functional heterotetrameric channels with other alpha subunits that are non-conducting when expressed alone, such as KCNF1, KCNG1, KCNG3, KCNG4, KCNH1, KCNH2, KCNS1, KCNS2, KCNS3 and KCNV1, creating a functionally diverse range of channel complexes (PubMed:10484328, PubMed:11852086, PubMed:12060745, PubMed:19074135, PubMed:19717558, PubMed:24901643). Heterotetrameric channel activity formed with KCNS3 show increased current amplitude with the threshold for action potential activation shifted towards more negative values in hypoxic-treated pulmonary artery smooth muscle cells (By similarity). Channel properties are also modulated by cytoplasmic ancillary beta subunits such as AMIGO1, KCNE1, KCNE2 and KCNE3, slowing activation and inactivation rate of the delayed rectifier potassium channels (By similarity). 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. Major contributor to the slowly inactivating delayed-rectifier voltage-gated potassium current in neurons of the central nervous system, sympathetic ganglion neurons, neuroendocrine cells, pancreatic beta cells, cardiomyocytes and smooth muscle cells. Mediates the major part of the somatodendritic delayed-rectifier potassium current in hippocampal and cortical pyramidal neurons and sympathetic superior cervical ganglion (CGC) neurons that acts to slow down periods of firing, especially during high frequency stimulation. Plays a role in the induction of long-term potentiation (LTP) of neuron excitability in the CA3 layer of the hippocampus (By similarity). Contributes to the regulation of glucose-induced action potential amplitude and duration in pancreatic beta cells, hence limiting calcium influx and insulin secretion (PubMed:23161216). Plays a role in the regulation of resting membrane potential and contraction in hypoxia-treated pulmonary artery smooth muscle cells. May contribute to the regulation of the duration of both the action potential of cardiomyocytes and the heart ventricular repolarization QT interval. Contributes to the pronounced pro-apoptotic potassium current surge during neuronal apoptotic cell death in response to oxidative injury. May confer neuroprotection in response to hypoxia/ischemic insults by suppressing pyramidal neurons hyperexcitability in hippocampal and cortical regions (By similarity). Promotes trafficking of KCNG3, KCNH1 and KCNH2 to the cell surface membrane, presumably by forming heterotetrameric channels with these subunits (PubMed:12060745). Plays a role in the calcium-dependent recruitment and release of fusion-competent vesicles from the soma of neurons, neuroendocrine and glucose-induced pancreatic beta cells by binding key components of the fusion machinery in a pore-independent manner (By similarity). {ECO:0000250|UniProtKB:P15387, ECO:0000250|UniProtKB:Q03717, ECO:0000269|PubMed:10484328, ECO:0000269|PubMed:11852086, ECO:0000269|PubMed:12060745, ECO:0000269|PubMed:12560340, ECO:0000269|PubMed:1283219, ECO:0000269|PubMed:19074135, ECO:0000269|PubMed:19717558, ECO:0000269|PubMed:23161216, ECO:0000269|PubMed:24901643, ECO:0000269|PubMed:8081723}.
    Molecular Weight
    97.1 kDa Including tag.
    UniProt
    Q14721
    Pathways
    Synaptic Membrane
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