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Related Concept Videos

Transducer Mechanism: G Protein–Coupled Receptors01:30

Transducer Mechanism: G Protein–Coupled Receptors

G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
GPCRs are also called heptahelical, 7TM, or...
G Protein-coupled Receptors01:15

G Protein-coupled Receptors

G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
G Protein-coupled Receptors01:15

G Protein-coupled Receptors

G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
Transducer Mechanism: Nuclear Receptors01:31

Transducer Mechanism: Nuclear Receptors

Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
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Adrenergic Receptors (Adrenoceptors): Classification

Adrenergic receptors, or adrenoceptors, respond to the autonomic neurotransmitter noradrenaline and other endogenous catecholamine agonists. They are classified into two main families, α and β, based on their pharmacological response and are further subdivided depending on their location, elicited response, and affinity to specific agonists or antagonists.
α-Adrenoceptors
α-Adrenoceptors are classified into two main subtypes: α1 and α2. The α1 adrenoceptors, which are found on postsynaptic...
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Drug Nomenclature

During the development of a new pharmaceutical, the manufacturer initially assigns a code name to the drug. Once approved, the drug receives a United States Adopted Name (USAN)—a generic, nonproprietary designation. Upon being listed in the United States Pharmacopeia, this nonproprietary name becomes the drug's official name. Additionally, the manufacturer assigns a proprietary name or trademark, which serves as the brand name under which the drug is marketed. It is worth noting that the same...

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Updated: May 28, 2026

Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors
12:03

Receptor Autoradiography Protocol for the Localized Visualization of Angiotensin II Receptors

Published on: June 7, 2016

Receptor nomenclature guidelines.

M Williams1

  • 1Abbott Laboratories, Abbott Park, Illinois, USA.

Current Protocols in Pharmacology
|October 4, 2011
PubMed
Summary
This summary is machine-generated.

Receptor characterization involves pharmacological and molecular approaches. The International Union of Pharmacology (IUPHAR) established guidelines for receptor nomenclature and classification.

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Last Updated: May 28, 2026

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Area of Science:

  • Pharmacology
  • Molecular Biology
  • Biochemistry

Background:

  • Receptor characterization traditionally uses pharmacological and radioligand methods.
  • Molecular biology enables receptor identification via cloning and expression.
  • Signal transduction mechanisms provide an additional classification approach.

Purpose of the Study:

  • To summarize established methods for receptor characterization.
  • To present the International Union of Pharmacology (IUPHAR) guidelines for receptor nomenclature.
  • To consolidate consensus reports on receptor families.

Main Methods:

  • Classical pharmacology and radioligand binding assays.
  • Cloning and expression of homologous proteins.
  • Structure-activity relationship (SAR) studies.
  • Classification based on signal transduction pathways.

Main Results:

  • Two primary approaches for receptor characterization are detailed: pharmacological and molecular.
  • The evolution of receptor classification includes signal transduction mechanisms.
  • IUPHAR has developed standardized nomenclature and guidelines for receptor families.

Conclusions:

  • A comprehensive overview of receptor characterization methodologies is provided.
  • IUPHAR's efforts ensure a standardized and consistent approach to receptor classification.
  • This summary facilitates a common understanding of receptor research and nomenclature.