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GRK4 Antibody (C-term)
Purified Rabbit Polyclonal Antibody (Pab)
- SPECIFICATION
- CITATIONS: 1
- PROTOCOLS
- BACKGROUND
Application 
| IHC-P, WB, E |
|---|---|
| Primary Accession | P32298 |
| Reactivity | Human |
| Host | Rabbit |
| Clonality | Polyclonal |
| Isotype | Rabbit IgG |
| Calculated MW | 66583 Da |
| Antigen Region | 549-577 aa |
| Gene ID | 2868 |
|---|---|
| Other Names | G protein-coupled receptor kinase 4, G protein-coupled receptor kinase GRK4, ITI1, GRK4, GPRK2L, GPRK4 |
| Target/Specificity | This GRK4 antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 549-577 amino acids from the C-terminal region of human GRK4. |
| Dilution | WB~~1:1000 IHC-P~~1:10~50 |
| Format | Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is prepared by Saturated Ammonium Sulfate (SAS) precipitation followed by dialysis against PBS. |
| Storage | Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles. |
| Precautions | GRK4 Antibody (C-term) is for research use only and not for use in diagnostic or therapeutic procedures. |
| Name | GRK4 |
|---|---|
| Synonyms | GPRK2L, GPRK4 |
| Function | Specifically phosphorylates the activated forms of G protein- coupled receptors. GRK4-alpha can phosphorylate rhodopsin and its activity is inhibited by calmodulin; the other three isoforms do not phosphorylate rhodopsin and do not interact with calmodulin. GRK4-alpha and GRK4-gamma phosphorylate DRD3. Phosphorylates ADRB2. |
| Cellular Location | Cytoplasm. Cytoplasm, cell cortex. Note=Both at the cell surface and dispersed in the cytoplasm under basal conditions Receptor stimulation results in the internalization of GRK4 to the perinuclear area, where colocalization with DRD3 is observed strongly at 5 and 15 minutes. DRD3 and GRK4 colocalize in lipid rafts of renal proximal tubule cells |
| Tissue Location | Isoform 1, isoform 2, isoform 3, and isoform 4 are expressed in testis. Isoform 4 is expressed in myometrium |
Provided below are standard protocols that you may find useful for product applications.
Background
Protein kinases are enzymes that transfer a phosphate group from a phosphate donor, generally the g phosphate of ATP, onto an acceptor amino acid in a substrate protein. By this basic mechanism, protein kinases mediate most of the signal transduction in eukaryotic cells, regulating cellular metabolism, transcription, cell cycle progression, cytoskeletal rearrangement and cell movement, apoptosis, and differentiation. With more than 500 gene products, the protein kinase family is one of the largest families of proteins in eukaryotes. The family has been classified in 8 major groups based on sequence comparison of their tyrosine (PTK) or serine/threonine (STK) kinase catalytic domains. The AGC kinase group consists of 63 kinases including the cyclic nucleotide-regulated protein kinase (PKA & PKG) family, the diacylglycerol-activated/phospholipid-dependent protein kinase C (PKC) family, the related to PKA and PKC (RAC/Akt) protein kinase family, the kinases that phosphorylate G protein-coupled receptors family (ARK), and the kinases that phosphorylate ribosomal protein S6 family (RSK).
References
Perroy, J., et al., EMBO J. 22(15):3816-3824 (2003).
Watanabe, H., et al., Kidney Int. 62(3):790-798 (2002).
Sallese, M., et al., J. Biol. Chem. 272(15):10188-10195 (1997).
Premont, R.T., et al., J. Biol. Chem. 271(11):6403-6410 (1996).
Sallese, M., et al., Biochem. Biophys. Res. Commun. 199(2):848-854 (1994).
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