Glutamate receptor ionotropic, NMDA 2A (GRIN2A),partial, human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 23-555aa. Protein Length: Partial. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: VYQRAVMAVG SLTINEERSE VVDFSVPFVE TGISVMVSRS NGTVSPSAFL IGKAIWLLWG LVFNNSVPVQ NPKGTTSKIM MHQYMTKFNQ KGVEDALVSL KTGKLDAFIY DAAVLNYKAG RDEGCKLVTI. 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: NMDA receptor subtype of glutamate-gated ion channels possesses high calcium permeability and voltage-dependent sensitivity to magnesium. Activation requires binding of agonist to both types of subunits. Reference: Mutations in GRIN2A and GRIN2B encoding regulatory subunits of NMDA receptors cause variable neurodevelopmental phenotypes.Endele S., Rosenberger G., Geider K., Popp B., Tamer C., Stefanova I., Milh M., Kortum F., Fritsch A., Pientka F.K., Hellenbroich Y., Kalscheuer V.M., Kohlhase J., Moog U., Rappold G., Rauch A., Ropers H.H., von Spiczak S. , Tonnies H., Villeneuve N., Villard L., Zabel B., Zenker M., Laube B., Reis A., Wieczorek D., Van Maldergem L., Kutsche K.Nat. Genet. 42:1021-1026(2010). Function: Component of NMDA receptor complexes that function as heterotetrameric, ligand-gated ion channels with high calcium permeability and voltage-dependent sensitivity to magnesium. Channel activation requires binding of the neurotransmitter glutamate to the epsilon subunit, glycine binding to the zeta subunit, plus membrane depolarization to eliminate channel inhibition by Mg(2+)