Bioinformatics and type II G-protein-coupled receptors

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Updated: Sep 29, 2026

Measuring G-protein-coupled Receptor Signaling via Radio-labeled GTP Binding
10:13

Measuring G-protein-coupled Receptor Signaling via Radio-labeled GTP Binding

Published on: June 9, 2017

S M Foord1, S Jupe, J Holbrook

  • 1Bioinformatics, GlaxoSmithKline, Stevenage, Herts. SG1 2NY, UK. smf3746@ggr.co.uk

Biochemical Society Transactions
|August 28, 2002
PubMed

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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 Receptors01:27

G Protein-coupled Receptors

G-protein-coupled receptors are ligand-binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that traverses the cell membrane seven times, creating intracellular and extracellular loops. The extracellular loops create a ligand-specific pocket which binds to neurotransmitters or hormones. The intracellular loops hold onto the G-protein.The G-protein, or guanine nucleotide-binding protein, is a large heterotrimeric complex. Its three subunits...
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...
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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 Receptors01:27

G-protein Coupled Receptors

G-protein-coupled receptors are ligand-binding receptors that indirectly affect changes in the cell. The actual receptor is a single polypeptide that traverses the cell membrane seven times, creating intracellular and extracellular loops. The extracellular loops create a ligand-specific pocket which binds to neurotransmitters or hormones. The intracellular loops hold onto the G-protein.The G-protein, or guanine nucleotide-binding protein, is a large heterotrimeric complex. Its three subunits...
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Types of Receptors: Cell Surface Receptors

Cell-surface receptors, also known as transmembrane receptors, are cell surface, membrane-anchored (integral) proteins that bind to external ligand molecules. This type of receptor spans the plasma membrane and performs signal transduction, converting an extracellular signal into an intracellular signal. Ligands that interact with cell-surface receptors do not have to enter the cell that they affect. Cell-surface receptors are also called cell-specific proteins or markers because they are...