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Human GRK5 / GPRK5 Protein (His Tag)

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Human GRK5 Protein Product Information
Synonym:FLJ39780, GPRK5
Protein Construction:A DNA sequence encoding the human GRK5 (NP_005299.1) (Met 1-Ser 590) was fused with a polyhistidine tag at the C-terminus.
Expressed Host:Baculovirus-Insect Cells
Shipping:In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Human GRK5 Protein QC Testing
Purity:> 90 % as determined by SDS-PAGE
Bio-Activity:No Kinase Activity
Endotoxin:< 1.0 EU per μg of the protein as determined by the LAL method
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Met 1
Molecule Mass:The recombinant human GRK5 consists of 600 amino acids and predicts a molecular mass of 69 kDa. The apparent molecular mass of rhGRK5 is approximately 58 kDa in SDS-PAGE under reducing conditions.
Formulation:Lyophilized from sterile 50mM Tris, 100mM NaCl, 0.5mM PMSF, 1mM DTT, 0.5mM EDTA, 10% gly, pH 7.4
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Human GRK5 Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Other GRK5 Recombinant Protein Products
GRK5 Background

G protein-coupled receptor kinase 5, also known as G protein-coupled receptor kinase GRK5 and GRK5, is a member of the protein kinase superfamily, AGC Ser/Thr protein kinase family and GPRK subfamily. GRKs specifically phosphorylate agonist-occupied G protein-coupled receptors at the inner surface of the plasma membrane (PM), leading to receptor desensitization. GRKs utilize a variety of mechanisms to bind tightly, and sometimes reversibly, to cellular membranes. GRKs play an important role in mediating agonist-specific desensitization of numerous G protein-coupled receptors.
GRK5 contains one AGC-kinase C-terminal domain, one protein kinase domain and one RGS domain. GRK5 specifically phosphorylates the activated forms of G protein-coupled receptors. Phospholipid-stimulated autophosphorylation may represent a novel mechanism for membrane association and regulation of GRK5 activity. GRK5 deficiency significantly exaggerates microgliosis and astrogliosis in the presence of an inflammatory initiator, such as the excess fibrillar Abeta and the subsequent active inflammatory reactions. GRK5 deficiency has been linked to early Alzheimer's disease in humans and mouse models of the disease.

Human GRK5 References
  • Kunapuli,P. et al., 1994, J Biol Chem. 269 (14):10209-12.
  • Millman,E.E. et al., 2004, Br J Pharmacol  141 (2):277-84.
  • Thiyagarajan,M.M. et al., 2004, J Biol Chem  279 (17):17989-95.
  • Suo,Z. et al., 2007,Neurobiol Aging. 28 (12):1873-88.
  • Li,L. et al., 2008,J Neuroinflammation. 5 :24.
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    Catalog: 10839-H08B-50
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