Recombinant Human GRK5 Protein

Product Discontinued

Recombinant Human GRK5 Protein Summary

• Description: Recombinant protein for Human GRK5
  
  

  Source:Baculovirus (Sf9 insect cells)
  Amino Acid Sequence:(P34947)

• Source: Sf 9 (baculovirus)
• Protein/Peptide Type: Recombinant Protein
• Gene: GRK5
• Purity: >95%, by SDS-PAGE

Applications/Dilutions

• Dilutions:
  • Bioactivity
  • SDS-Page
• Application Notes: Specific activity: 28 nmol phosphate incorporated into Casein per minute per mg protein at 30C for 15 minutes using a final concentration of 50 uM ATP (0.83 uCi/assay).
• Theoretical MW: 95 kDa.
  Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

• Storage: Store at -80C. Avoid freeze-thaw cycles.
• Buffer: 50 mM Tris-HCl (pH 7.5), 150 mM NaCl, 0.25 mM DTT, 0.1 mM EGTA, 0.1 mM EDTA, 0.1 mM PMSF, 25% glycerol
• Concentration: 0.1 mg/ml
• Purity: >95%, by SDS-PAGE

Alternate Names for Recombinant Human GRK5 Protein

• EC 2.7.11
• EC 2.7.11.16
• FLJ39780
• G protein-coupled receptor kinase 5
• G protein-coupled receptor kinase GRK5
• GPRK5
• GPRK5FP2025
• GRK5

Background

G protein-coupled receptor kinases (GRKs) play an important role in phosphorylating and regulating the activity of a variety of G protein-coupled receptors. Haribabu and Snyderman (1) identified GRK5 and GRK6. GRK5 is a member of the guanine nucleotide-binding protein (G protein)-coupled receptor kinase subfamily of the Ser/Thr protein kinase family. It phosphorylates the activated forms of G protein-coupled receptors thus initiating their deactivation. It has also been shown to play a role in regulating the motility of polymorphonuclear leukocytes (PMNs). Bullrich (2) used a rodent-human hybrid panel to map 2 newly identified members of the GRK family: GPRK5 and GPRK6 to 10q24-qter and 5q35, respectively. Desensitization of G protein-coupled receptors regulates the number of polymorphonuclear leukocytes (PMNs), as well as their motility and ability to stop upon contact with pathogens or target cells, and this desensitization is mediated by GRKs (3). MIP2 induces GRK2 and GRK5 expression in PMNs through PI3KG signaling. However, lipopolysaccharide (LPS), acting through TLR4 signaling, mediated through MEK1 /MEK2, transcriptionally downregulates expression of GRK2 and GRK5 in response to MIP2, which decreases chemokine receptor desensitization and markedly augments PMN migration. Thus, LPS-activated TLR4 signaling regulates PMN migration by modulating the expression of chemokine receptors in a GRK2- and GRK5-dependent manner.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 3 months from date of receipt.

Bioinformatics

• Gene Symbol: GRK5