Immunofluorescence staining of U251 cells with CSB-PA619877LA01HU-IF at 1:100, counter-stained with DAPI. The cells were fixed in 4% formaldehyde and blocked in 10% normal Goat Serum. The cells were then incubated with the antibody overnight at 4°C. The secondary antibody was Alexa Fluor 488-congugated AffiniPure Goat Anti-Rabbit IgG(H+L).
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用途:
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
Inward rectifying potassium channel that is activated by phosphatidylinositol 4,5-bisphosphate and that probably participates in controlling the resting membrane potential in electrically excitable cells. Probably participates in establishing action potential waveform and excitability of neuronal and muscle tissues. Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. The inward rectification is mainly due to the blockage of outward current by internal magnesium.
基因功能參考文獻(xiàn):
Cellular electrophysiology assays of mouse Kir2.1 and human Kir2.2 indicated that, consistent with simulations, the Leu residue increased the channel responses to phosphatidylinositol diphosphate (PIP2) through increased binding affinity and faster activation kinetics, and the deactivation kinetics decreased upon PIP2 inhibition. PMID: 26520451
This report is the first to describe the KCNJ12 gene as a cause of familial dilated cardiomyopathy in patients PMID: 28816949
The augmentation of Ca(2+) influx and cytokine release suggests a physiological role for Kir2.2 in TLR4-stimulated monocytes. PMID: 26324774
Unconventional role of the inwardly rectifying potassium channel Kir2.2 as a constitutive activator of RelA in cancer. PMID: 23269273
Kir2.2 knockdown induces senescence of cancer cells by a mechanism involving reactive oxygen species accumulation. PMID: 20841375
heteromerization contributes to the phenotype of Andersen syndrome PMID: 12032359
Molecular cloning of functional KCNJ12 with an arginine residue at position 285. PMID: 12417321
transcripts for Kir2.2 potassium channels are identified in proliferative smooth muscle cells PMID: 12598232
Data show that the recovery of K(ir)2.2 from inhibition by FCCP requires intracellular components, but direct depletion of ATP does not reproduce the differential inhibitory effect of FCCP. PMID: 19016473