ATP-sensitive inward rectifier potassium channel 1 (KCNJ1), partial, human, recombinant

Organism: Homo sapiens (Human). Source: Yeast. Expression Region: 178-391aa. Protein Length: Cytoplasmic Domain. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: ILAKISRPKK RAKTITFSKN AVISKRGGKL CLLIRVANLR KSLLIGSHIY GKLLKTTVTP EGETIILDQI NINFVVDAGN ENLFFISPLT IYHVIDHNSP FFHMAAETLL QQDFELVVFL DGTVESTSAT CQVRTSYVPE EVLWGYRFAP IVSKTKEGKY RVDFHNFSKT VEVETPHCAM CLYNEKDVRA RMKRGYDNPN FILSEVNETD DTKM. Purity: Greater than 90% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. 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. Storage: 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. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: In the kidney, probably plays a major role in potassium homeostasis. 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 domain 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. This channel is activated by internal ATP and can be blocked by external barium. Reference: Cloning and characterization of multiple forms of the human kidney ROM-K potassium channel.Shuck M.E., Bock J.H., Benjamin C.W., Tsai T.-D., Lee K.S., Slightom J.L., Bienkowski M.J.J. Biol. Chem. 269:24261-24270(1994). Function: In the kidney, probably plays a major role in potassium homeostasis. 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. This channel is activated by internal ATP and can be blocked by external barium.