Blog Archives

Hot topic: Cryo-EM structures of Mucolipin TRP Channels in the Lysosome: Five Together at Once

The mucolipin subfamily of Transient Receptor Potential (TRP) channels, which consist of TRPML1, TRPML2, and TRPML3 (a.k.a. MCOLN1- 3), are Ca2+-permeable cation channels localized in intracellular endosomes and lysosomes. In response to cellular stimulation, TRPMLs mediate Ca2+ release from the

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Hot topic: A new research avenue investigating mitochondrial GPCR biology

As one of the first propositions for GPCRs being present in mitochondrial membranes, a recent report from Robert Friedlander and colleagues [1] follows on from previous work characterising synaptic and extrasynaptic mitochondria in human cortex (post-mortem samples) and their role

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Hot topic: Crystal structure of LPA6, a receptor for lysophosphatidic acid, at 3.2A

Lysophospholipids (LPs) have myriad roles as extracellular signals that activate cognate G protein-coupled receptors (GPCRs) (2). LPs for which receptors have been reported include lysophosphatidic acid (LPA) (receptors: LPA1-6), sphingosine 1-phosphate (S1P1-5), lysophosphatidyl serine (LPS1-3, 2L (2L is a pseudogene

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Hot topic: FZD6 dimers dissociate after stimulation – briefly

GPCRs of all classes are widely thought to form homodimers, heterodimers and higher-order oligomers. The functional significance of dimerization is well understood for Class C receptors but less certain for the other GPCR classes, including the rather unconventional class F

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Hot topics: A cryptic binding pocket in K2P2 exposes new avenues for drug development.

The TREK subfamily of K2P channels (K2P2, K2P4 and K2P10) pass background potassium currents that modulate the excitability of neuronal cells and cardiac myocytes. In recent years, these channels have received significant attention as potential drug targets. This is in

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Hot topics: Agonist-bound crystal structures of the CB1 cannabinoid receptor

Antagonist bound crystal structures of GPCRs are useful in giving an insight into the molecular conformation of a receptor’s inactive state whilst enabling the design of new drugs. However, they prove insufficient to understand the activation mechanism of the receptor

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Hot topics: Identifiers for the 21st century

While identifiers are not a traditional “hot topic” in pharmacology the subject is becoming increasingly important. One of the reasons is that for mechanistic pharmacology the community needs to define (and communicate) identifiers for the key entities of model organism

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