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AB245125

Anti-GRK2 antibody [EPR22465] - BSA and Azide free

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(1 Publication)

Rabbit Recombinant Monoclonal GRK2 antibody. Carrier free. Suitable for IP, WB and reacts with Human samples. Cited in 1 publication.

View Alternative Names

ADRBK1, BARK, BARK1, GRK2, Beta-adrenergic receptor kinase 1, Beta-ARK-1, G-protein coupled receptor kinase 2

4 Images
Immunoprecipitation - Anti-GRK2 antibody [EPR22465] - BSA and Azide free (AB245125)
  • IP

Supplier Data

Immunoprecipitation - Anti-GRK2 antibody [EPR22465] - BSA and Azide free (AB245125)

GRK2 was immunoprecipitated from 0.35 mg HEK-293T (human epithelial cell line from embryonic kidney transformed with large T antigen) whole cell lysate with ab227825 at 1/30 dilution. Western blot was performed from the immunoprecipitate using ab227825 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366), was used for detection at 1/1000 dilution.
Lane 1 : HEK-293T whole cell lysate 10 μg (Input).
Lane 2 : ab227825 IP in HEK-293T whole cell lysate.
Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab227825 in HEK-293T whole cell lysate.
Blocking/Dilution buffer : 5% NFDM/TBST.
Exposure time : 3 seconds.

GRK2 was found readily degradable by proteolytic process (PMID : 9857063; PMID : 12738776). The bands smaller than 80-kDa detected in the immune-precipitate may represent degraded GRK2.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab227825).

All lanes:

Immunoprecipitation - Anti-GRK2 antibody [EPR22465] (<a href='/en-us/products/primary-antibodies/grk2-antibody-epr22465-ab227825'>ab227825</a>)

Predicted band size: 80 kDa

false

Immunoprecipitation - Anti-GRK2 antibody [EPR22465] - BSA and Azide free (AB245125)
  • IP

Supplier Data

Immunoprecipitation - Anti-GRK2 antibody [EPR22465] - BSA and Azide free (AB245125)

GRK2 was immunoprecipitated from 0.35 mg HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate with ab227825 at 1/30 dilution. Western blot was performed from the immunoprecipitate using ab227825 at 1/1000 dilution. VeriBlot for IP secondary antibody (HRP) (ab131366), was used as secondary antibody at 1/1000 dilution.
Lane 1 : HeLa whole cell lysate 10 μg (Input).
Lane 2 : ab227825 IP in HeLa whole cell lysate.
Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab227825 in HeLa whole cell lysate.
Blocking/Dilution buffer : 5% NFDM/TBST.
Exposure time : 3 seconds.

GRK2 was found readily degradable by proteolytic process (PMID : 9857063; PMID : 12738776). The bands smaller than 80-kDa detected in the immune-precipitate may represent degraded GRK2.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab227825).

All lanes:

Immunoprecipitation - Anti-GRK2 antibody [EPR22465] (<a href='/en-us/products/primary-antibodies/grk2-antibody-epr22465-ab227825'>ab227825</a>)

Predicted band size: 80 kDa

false

Western blot - Anti-GRK2 antibody [EPR22465] - BSA and Azide free (AB245125)
  • WB

Lab

Western blot - Anti-GRK2 antibody [EPR22465] - BSA and Azide free (AB245125)

This data was developed using ab227825, the same antibody clone in a different buffer formulation.

Lanes 1-4 : Merged signal (red and green). Green - ab227825 observed at 80 kDa. Red - loading control ab8245 observed at 36 kDa.

ab227825 Anti-GRK2 antibody [EPR22465] was shown to specifically react with GRK2 in wild-type HEK293T cells. Loss of signal was observed when knockout cell line ab266352 (knockout cell lysate ab257345) was used. Wild-type and GRK2 knockout samples were subjected to SDS-PAGE. ab227825 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) were incubated overnight at 4°C at 1 in 1000 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.

All lanes:

Western blot - Anti-GRK2 antibody [EPR22465] (<a href='/en-us/products/primary-antibodies/grk2-antibody-epr22465-ab227825'>ab227825</a>) at 1/1000 dilution

Lane 1:

Wild-type HEK293T cell lysate at 20 µg

Lane 2:

ADRBK1 knockout HEK293T cell lysate at 20 µg

Lane 2:

Western blot - Human ADRBK1 (GRK2) knockout HEK-293T cell line (<a href='/en-us/products/cell-lines/human-adrbk1-grk2-knockout-hek-293t-cell-line-ab266352'>ab266352</a>)

Lane 3:

HepG2 cell lysate at 20 µg

Lane 4:

HeLa cell lysate at 20 µg

Secondary

All lanes:

Western blot - Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-irdye-800cw-preadsorbed-ab216773'>ab216773</a>) at 1/10000 dilution

Predicted band size: 80 kDa

Observed band size: 80 kDa

false

Western blot - Anti-GRK2 antibody [EPR22465] - BSA and Azide free (AB245125)
  • WB

Supplier Data

Western blot - Anti-GRK2 antibody [EPR22465] - BSA and Azide free (AB245125)

Blocking/Dilution buffer : NFDM/TBST.

ab227825 was shown to specifically react with GRK2 in wild-type HAP1 cells as signal was lost in GRK2 knockout cells. Wild-type and GRK2 knockout samples were subjected to SDS-PAGE. ab227825 and ab181602 (Rabbit anti-GAPDH loading control) were incubated 1 hour at room temperature at 1/1000 dilution and 1/200,000 dilution respectively. Blots were developed with Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated (ab97051) secondary antibody at 1/100,000 dilution for 1 hour at room temperature before imaging. The blot was developed on a BIO-RAD® ChemiDoc™ MP instrument using the ECL technique.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab227825).

All lanes:

Western blot - Anti-GRK2 antibody [EPR22465] (<a href='/en-us/products/primary-antibodies/grk2-antibody-epr22465-ab227825'>ab227825</a>) at 1/1000 dilution

Lane 1:

Wild-type HAP1 whole cell lysate at 20 µg

Lane 2:

GRK2 knockout HAP1 whole cell lysate at 20 µg

Lane 3:

HEK-293 (human epithelial cell line from embryonic kidney) whole cell lysate at 20 µg

Lane 4:

HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 20 µg

Lane 5:

HepG2 (human liver hepatocellular carcinoma cell line) whole cell lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 80 kDa

false

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR22465

Isotype

IgG

Carrier free

Yes

Reacts with

Human

Applications

WB, IP

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"}, "ICCIF" : {"fullname" : "Immunocytochemistry/ Immunofluorescence", "shortname":"ICC/IF"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "", "WB-species-notes": "<p></p>", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "<p></p>", "ICCIF-species-checked": "notRecommended", "ICCIF-species-dilution-info": "", "ICCIF-species-notes": "<p></p>" } } }

Product details

ab245125 is the carrier-free version of ab227825.

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.

Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

Compatibility
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Constituents: PBS
Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
Do Not Freeze

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

The protein GRK2 also known as G protein-coupled receptor kinase 2 is an important enzyme involved in the regulation of G protein-coupled receptors (GPCRs). It has a molecular weight of approximately 80 kilodaltons. GRK2 is widely expressed in many tissues especially in the heart and brain where it plays an important role in cellular signaling processes. Its primary action is phosphorylating activated GPCRs which leads to receptor desensitization and downregulation modulating cellular responses to stimuli.
Biological function summary

GRK2 acts by coordinating with other proteins to regulate signal transduction pathways. It usually forms a complex with arrestins which prevent further signaling by blocking G protein coupling and directing receptors towards internalization pathways. This kinase acts to modulate receptor activity and maintain cellular homeostasis. GRK2 is essential for preventing overstimulation of cells playing a role in neurobiology and cardiology.

Pathways

GRK2 plays an important role in the adrenergic receptor signaling pathways including the beta-adrenergic and alpha-adrenergic pathways. It participates in the regulation of cardiac output and vascular tone by influencing the response of cells to catecholamines like adrenaline and noradrenaline. Proteins related to GRK2 in these pathways include adrenergic receptor subtypes and arrestin proteins. Voltage-gated calcium channels also interact with GRK2 linking it to calcium signaling pathways vital for muscle contraction and neurotransmitter release.

Research highlights GRK2's involvement in heart failure and hypertension. In heart failure elevated levels of GRK2 correlate with worsened cardiac function due to impaired beta-adrenergic receptor signaling. GRK2 is also linked to the development of hypertension through its effects on vascular smooth muscle cells and blood pressure regulation. Its interaction with proteins like arrestins suggests potential therapeutic targets for these cardiovascular conditions. Understanding and modulating GRK2 activity might offer approaches to treat these disorders.

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Specifically phosphorylates the agonist-occupied form of the beta-adrenergic and closely related receptors, probably inducing a desensitization of them (PubMed : 19715378). Phosphorylates catecholamine-activated ADRB2 to regulate physiological cardiomyocyte contraction rate responses (By similarity). Also phosphorylates ligand-bound C3a and C5a anaphylatoxin receptors (C3AR1 and C5AR1, respectively), leading to receptor desensitization (PubMed : 21799898, PubMed : 23077507). Key regulator of LPAR1 signaling (PubMed : 19306925). Competes with RALA for binding to LPAR1 thus affecting the signaling properties of the receptor (PubMed : 19306925). Desensitizes LPAR1 and LPAR2 in a phosphorylation-independent manner (PubMed : 19306925). Positively regulates ciliary smoothened (SMO)-dependent Hedgehog (Hh) signaling pathway by facilitating the trafficking of SMO into the cilium and the stimulation of SMO activity (By similarity). Inhibits relaxation of airway smooth muscle in response to blue light (PubMed : 30284927).
See full target information GRK2

Publications (1)

Recent publications for all applications. Explore the full list and refine your search

eLife 13: PubMed40996791

2025

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Applications

Unspecified application

Species

Unspecified reactive species

Tom Bonnifet,Sandra Sinnassamy,Olivia Massiani-Beaudoin,Philippe Mailly,Heloise Monnet,Damarys Loew,Berangere Lombard,Nicolas Servant,Rajiv L Joshi,Julia Fuchs
View all publications

Product promise

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