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ADRB2

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All listed services and products are For Research Use Only. Do Not use in any diagnostic or therapeutic applications.

Background

Adrenoceptor beta 2 (ADRB2) is a seven-transmembrane GPCR encoded by ADRB2 gene, widely expressed on respiratory, vascular and epithelial smooth muscle cells, localized to plasma membrane lipid bilayers. Distinct from other adrenergic receptor subtypes, ADRB2 binds circulating catecholamine ligands to activate cytoplasmic Gs protein cascades, driving intracellular cyclic AMP accumulation and smooth muscle relaxation programs. Under resting tissue status, low basal receptor occupancy maintains baseline tissue tone without excessive relaxation. Upon catecholamine stimulation, ligand-receptor coupling amplifies cAMP signaling to reduce smooth muscle contractility and support airway/vascular dilatation. Unlike pro-contractile adrenoceptor paralogs, ADRB2 carries tissue relaxant-specific signaling functions that cannot be fully compensated by other adrenergic subtypes, linking extracellular catecholamine detection to tissue tone regulatory pathways. Loss of functional ADRB2 elevates smooth muscle hypercontractility and impairs airway dilatory capacity, while sustained receptor activation sustains tissue relaxation, establishing ADRB2 as a core research target for GPCR membrane biology and respiratory modulator screening.

ADRB2 executes Gs-coupled GPCR function embedded within smooth muscle cell surface bilayers, utilizing conserved extracellular ligand-binding pockets to selectively recognize epinephrine and norepinephrine catecholamine ligands. Conserved transmembrane ligand-binding cavities separate its catecholamine affinity spectrum from alpha adrenoceptors. ADRB2-mediated G protein coupling bridges extracellular hormone sensing and intracellular cAMP effector cascades, balancing smooth muscle contractile tone based on catecholamine concentration. ADRB2 participates in airway relaxation, vascular dilatation and epithelial fluid transport. Deficient ADRB2 signaling disrupts tissue tone homeostasis and increases contractile pathology risk. Therefore, ADRB represents a pivotal research target for class A GPCR study and respiratory therapeutic screening.

Fig. 1 Schematic of curcumin targeting ADRB2 epigenetic modification for ischemic brain injury treatment. (OA Literature)Fig. 1 Curcumin alleviates acute ischemic stroke via reversing ADRB2 hypermethylation, inhibiting neuroinflammation and activating Nrf2 antioxidant pathway.1

ADRB2 Protein Function: Core Roles in Catecholamine Ligand Binding and Smooth Muscle Tone Tuning

The biological functions of ADRB2 are focused on catecholamine recognition, Gs protein coupling and tissue contractile control:

  • Catecholamine Ligand Binding: Captures circulating epinephrine ligands via extracellular transmembrane pockets.
  • Gs-Mediated cAMP Signaling: Recruits cytoplasmic Gs subunits to trigger intracellular cyclic AMP accumulation.
  • Baseline Tissue Tone Homeostasis: Maintains moderate smooth muscle contractility under resting hormonal conditions.
  • Relaxation Modulation: Governs magnitude of airway/vascular smooth muscle relaxation upon catecholamine exposure.
  • Disease Relevance: ADRB2 loss promotes hypercontractile tissue pathology, while sustained ligand binding sustains dilatory signaling.

ADRB2 Protein Product

Creative Biolabs offers high-quality ADRB2 proteins through optimized expression systems, including full-length seven-transmembrane GPCR. These products retain native catecholamine binding and G protein coupling activity, suitable for ligand-GPCR interaction and respiratory drug screening. All ADRB2 proteins undergo strict quality control to ensure consistent performance and reliable application across diverse research platforms.

ADRB2 Protein Product

Not finding the membrane protein product you need? Contact us to start your one-stop custom service!

ADRB2 Stable Cell Line Product

Creative Biolabs provides custom-engineered ADRB2 stable cell lines, including overexpression and blank control models. These cell lines are optimized for GPCR expression profiling and cAMP signal functional analysis. Each cell line undergoes stringent validation to ensure stable expression profiles and consistent functional performance in diverse experimental contexts.

ADRB2 Stable Cell Line Product

Not finding the stable cell line product you need? Contact us to start your one-stop custom service!

ADRB2 Recombinant Antibody Product

High-specificity recombinant antibodies targeting ADRB2 are developed via advanced antibody engineering technologies, with no cross-reactivity with other adrenoceptor subtypes. These antibodies are validated for smooth muscle plasma membrane localization detection and respiratory tissue expression profiling, and can be combined with Gs protein detection reagents to analyze complete ADRB2 signaling complexes in muscle cell models.

ADRB2 Recombinant Antibody Product

Not finding the recombinant antibody product you need? Contact us to start your one-stop custom service!

Product Features

  • Native Catecholamine & Gs Coupling Activity: Preserves intact ligand recognition and cyclic AMP signaling capacity for smooth muscle GPCR research.
  • ADRB Subtype Specificity: Eliminates non-specific cross-recognition of alpha or beta1 adrenoceptors.
  • Respiratory Biology Compatibility: Optimized reagent series for airway relaxation and bronchodilator therapeutic screening workflows.
  • Comprehensive Customization Support: Facilitates end-to-end development of customized proteins, antibodies and stable cell lines to address class A GPCR research demands.

Custom ADRB2 Research Services

Beyond catalog products, Creative Biolabs offers specialized custom services for ADRB2 research:

  • Custom ADRB2 Protein Production: Tailored expression of mutant and tagged ADRB2 constructs for ligand-receptor binding analysis.
  • Custom Antibody Development: Generation of ADRB2-specific antibodies for smooth muscle membrane immunostaining.
  • Stable Cell Line Engineering: Construction of ADRB2-modified cell models for cAMP signaling research.
  • Functional Assay Development: Custom design of catecholamine binding and cyclic AMP detection workflows.

Frequently Asked Questions (FAQ)

  1. What is the primary function of ADRB2?

    ADRB2 is a Gs-coupled beta2 adrenergic receptor that binds catecholamines to induce cAMP production and smooth muscle relaxation.

  2. Why is ADRB2 a significant research target?

    ADRB2 connects hormonal catecholamine signaling to airway and vascular tissue tone control, central to respiratory homeostasis research.

  3. Are Creative Biolabs' ADRB2 products suitable for clinical use?

    No, all ADRB2 products and services are strictly for research use only, not intended for clinical diagnosis or treatment.

  4. What types of ADRB2 products does Creative Biolabs offer?

    Offerings include full-length ADRB2 GPCRs, isoform-specific detection antibodies and custom stable cell lines for respiratory GPCR research.

  5. How are ADRB2 proteins validated for activity?

    ADRB2 proteins are validated via catecholamine ligand binding and G protein coupling functional testing.

Reference
  1. Wei, Liangzhe, et al. "Curcumin reduces neuroinflammation and oxidative stress in a stroke model by epigenetically regulating ADRB2 methylation through JAK2/STAT3 and Nrf2/HO-1 pathways." Journal of Neuroinflammation 23.1 (2026): 109. Under Open Access license CC BY 4.0, without modification. https://doi.org/10.1186/s12974-026-03729-y
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