G protein-coupled receptor kinases (GRKs) are important modulators of G protein-coupled receptor (GPCR) signaling. Receptor phosphorylation by specific GRKs plays a key role in triggering rapid desensitization. The GRK family consists of 7 isoforms that share a central catalytic domain with homology to other serine/threonine kinases. The catalytic domain is flanked by an amino-terminal RGS domain of 183‑188 amino acids and a carboxyl-terminus of variable length. GRK2 is a member of the beta ARK subfamily, and was originally termed beta ‑adrenergic receptor kinase 1 ( beta ARK1).
Human/Mouse/Rat GRK2 Antibody
R&D Systems | Catalog # MAB43391
Recombinant Monoclonal Antibody.
Key Product Details
Validated by
Knockout/Knockdown
Species Reactivity
Human, Mouse, Rat
Applications
Knockout Validated, Western Blot, Simple Western
Label
Unconjugated
Antibody Source
Recombinant Monoclonal Rabbit IgG Clone # 2089B
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Product Specifications
Immunogen
E. coli-derived recombinant human GRK2
Pro468-Leu689
Accession # P25098
Pro468-Leu689
Accession # P25098
Specificity
Detects human GRK2 in direct ELISAs and Western blots.
Clonality
Monoclonal
Host
Rabbit
Isotype
IgG
Scientific Data Images for Human/Mouse/Rat GRK2 Antibody
Detection of Human, Mouse, and Rat GRK2 by Western Blot.
Western blot shows lysates of THP-1 human acute monocytic leukemia cell line, Ramos human Burkitt's lymphoma cell line, LL/2 mouse Lewis lung carcinoma cell line, H4-II-E-C3 rat hepatoma cell line, and C6 rat glioma cell line. PVDF membrane was probed with 0.1 µg/mL of Rabbit Anti-Human/Mouse/Rat GRK2 Monoclonal Antibody (Catalog # MAB43391) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band was detected for GRK2 at approximately 76 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.Detection of Human GRK2 by Simple WesternTM.
Simple Western lane view shows lysates of Ramos human Burkitt's lymphoma cell line and THP‑1 human acute monocytic leukemia cell line, loaded at 0.2 mg/mL. A specific band was detected for GRK2 at approximately 80 kDa (as indicated) using 1 µg/mL of Rabbit Anti-Human/Mouse/ Rat GRK2 Monoclonal Antibody (Catalog # MAB43391). This experiment was conducted under reducing conditions and using the 12-230 kDa separation system.Western Blot Shows Human GRK2 Specificity by Using Knockout Cell Line.
Western blot shows lysates of HEK293T human embryonic kidney parental cell line and GRK2 knockout HEK293T cell line (KO). PVDF membrane was probed with 0.1 µg/mL of Rabbit Anti-Human/Mouse/Rat GRK2 Monoclonal Antibody (Catalog # MAB43391) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). A specific band was detected for GRK2 at approximately 76 kDa (as indicated) in the parental HEK293T cell line, but is not detectable in knockout HEK293T cell line. GAPDH (Catalog # MAB5718) is shown as a loading control. This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.Detection of GRK2 by Western Blot
Validation of CRISPR/Cas9 knock-out cell lines. (a) Western blot analysis of full-length GRK2 or GRK3 expression in parental or genome-edited cell lines with deletion of GRK2, GRK3 or GRK2/3. The anti-GRK2 and anti-GRK3 antibodies target a site C-terminal to the site that is genetically modified. GAPDH expression is detected to ensure equal loading. Full-length blots are presented in Supplementary Fig. 1. (b) Quantification of anti-GRK2 and anti-GRK3 western blots after normalization to the GAPDH signal. Mean ± SEM of 4–8 independent experiments. Expression in each of the KO cell lines was compared to the parental cells by one sample t-test using a reference value of 100 and the cutoff for what was considered a significant difference was adjusted to P < 0.05/n (n corresponds to the number of observations) to correct for multiple comparisons. ***P < 0.001/n. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/33060647), licensed under a CC-BY license. Not internally tested by R&D Systems.Applications for Human/Mouse/Rat GRK2 Antibody
Application
Recommended Usage
Knockout Validated
GRK2
is specifically detected in HEK293T human embryonic kidney parental cell line but is not detectable in
GRK2 knockout HEK293T cell line.
Simple Western
1 µg/mL
Sample: Ramos human Burkitt's lymphoma cell line and THP‑1 human acute monocytic leukemia cell line
Sample: Ramos human Burkitt's lymphoma cell line and THP‑1 human acute monocytic leukemia cell line
Western Blot
0.1 µg/mL
Sample: THP‑1 human acute monocytic leukemia cell line, Ramos human Burkitt's lymphoma cell line, LL/2 mouse Lewis lung carcinoma cell line, H4‑II‑E‑C3 rat hepatoma cell line, and C6 rat glioma cell line
Sample: THP‑1 human acute monocytic leukemia cell line, Ramos human Burkitt's lymphoma cell line, LL/2 mouse Lewis lung carcinoma cell line, H4‑II‑E‑C3 rat hepatoma cell line, and C6 rat glioma cell line
Formulation, Preparation, and Storage
Purification
Protein A or G purified from cell culture supernatant
Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
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Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Calculators
Background: GRK2
Long Name
G protein-coupled Receptor Kinase 2
Alternate Names
ADRBK1, BARK1, Beta-ARK1
Gene Symbol
GRK2
UniProt
Additional GRK2 Products
Product Documents for Human/Mouse/Rat GRK2 Antibody
Certificate of Analysis
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Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human/Mouse/Rat GRK2 Antibody
For research use only
Related Research Areas
Citations for Human/Mouse/Rat GRK2 Antibody
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Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
- Cellular Response to Hypoxia Protocols
- R&D Systems Quality Control Western Blot Protocol
- Troubleshooting Guide: Western Blot Figures
- Western Blot Conditions
- Western Blot Protocol
- Western Blot Protocol for Cell Lysates
- Western Blot Troubleshooting
- Western Blot Troubleshooting Guide
- View all Protocols, Troubleshooting, Illustrated assays and Webinars
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