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Concept

Gs alpha subunit

Publications associées (24)

Structure of a membrane-bound menaquinol:organohalide oxidoreductase

Christof Holliger, Henning Paul-Julius Stahlberg, Julien Maillard, Dongchun Ni, Lorenzo Cimmino, Babatunde Edukpe Ekundayo

Organohalide-respiring bacteria are key organisms for the bioremediation of soils and aquifers contaminated with halogenated organic compounds. The major players in this process are respiratory reductive dehalogenases, corrinoid enzymes that use organohali ...

Nature Research2023

Rules and mechanisms governing G protein coupling selectivity of GPCRs

Bruno Emanuel Ferreira De Sousa Correia, Pablo Gainza Cirauqui

G protein-coupled receptors (GPCRs) convert extracellular stimuli into intracellular signaling by coupling to heterotrimeric G proteins of four classes: Gi/o, Gq, Gs, and G12/13. However, our understanding of the G protein selectivity of GPCRs is incomplet ...

Cell Press2023

Gαi1 inhibition mechanism of ATP-bound adenylyl cyclase type 5

Ursula Röthlisberger, Siri Camee van Keulen, Daniele Narzi

Conversion of adenosine triphosphate (ATP) to the second messenger cyclic adenosine monophosphate (cAMP) is an essential reaction mechanism that takes place in eukaryotes, triggering a variety of signal transduction pathways. ATP conversion is catalyzed by ...

2021

Reprogramming G Protein-Coupled Receptor Structure, Function And Signaling By Computational Design

Dániel Kéri

G protein-coupled receptors (GPCRs) are 7-transmembrane alpha-helical integral membrane proteins on which cells heavily rely to receive information regarding their external environment. These receptors are able to transfer information to intracellular down ...

EPFL2021

Computational pipeline to probe NaV1.7 gain-of-function variants in neuropathic painful syndromes

Stefano Zamuner

Applications of machine learning and graph theory techniques to neuroscience have witnessed an increased interest in the last decade due to the large data availability and unprecedented technology developments. Their employment to investigate the effect of ...

NATURE RESEARCH2020

Association of Both Inhibitory and Stimulatory G alpha Subunits Implies Adenylyl Cyclase 5 Deactivation

Ursula Röthlisberger, Siri Camee van Keulen, Daniele Narzi

Adenylyl cyclase (AC) generates cyclic AMP required for a variety of cellular functions, and its regulation plays a major role in cellular signal transduction in eukaryotes and prokaryotes. All membrane-bound AC isoforms in eukaryotes can be activated by s ...

AMER CHEMICAL SOC2019

Regulation of adenylyl cyclase 5 in striatal neurons confers the ability to detect coincident neuromodulatory signals

Ursula Röthlisberger, Siri Camee van Keulen, Daniele Narzi

Author summary Adenylyl cyclases (ACs) are enzymes that can translate extracellular signals into the intracellular molecule cAMP, which is thus a 2nd messenger of extracellular events. The brain expresses nine membrane-bound AC variants, and AC5 is the dom ...

2019

Co-expression of CCT subunits hints at TRiC assembly

Oksana Andrei Sergeeva

The eukaryotic cytosolic chaperonin, t-complex polypeptide 1 (TCP-1) ring complex or TRiC, is responsible for folding a tenth of the proteins in the cell. TRiC is a double-ringed barrel with each ring composed of eight different CCT (chaperonin containing ...

2019

Associations between genetic variations and global motion perception

Michael Herzog

The cholinergic system is known to strongly modulate perceptual and cognitive processes, and the alpha7 subunit of the cholinergic nicotinic receptor (CHRNA7) is broadly expressed within the visual system. Here, we assessed whether genetic variations of CH ...

2019

Towards Elucidating the Mechanism of Action of Biguanides

Nicolas Peter Goeldel

Diabetes type 2 patients are insensitive to insulin, a condition that leads to reduced glucose uptake by cells and, subsequently, to high concentration of glucose in the blood. For 60 years, biguanides have been one of the few effective therapeutics in red ...

EPFL2018

CDK4 Phosphorylates AMPK alpha 2 to Inhibit Its Activity and Repress Fatty Acid Oxidation

Anita Nasrallah, Caterina Collodet

The roles of CDK4 in the cell cycle have been extensively studied, but less is known about the mechanisms underlying the metabolic regulation by CDK4. Here, we report that CDK4 promotes anaerobic glycolysis and represses fatty acid oxidation in mouse embry ...

Cell Press2017

Exploring the inhibition mechanism of adenylyl cyclase type 5 by n-terminal myristoylated Gαi1

Ursula Röthlisberger, Siri Camee van Keulen

Adenylyl cyclase (AC) is an important messenger involved in G-protein-coupled-receptor signal transduction pathways, which is a well-known target for drug development. AC is regulated by activated stimulatory (Gαs) and inhibitory (Gαi) G proteins in the cy ...

Public Library of Science2017

Computational Investigation of Intracellular Signalling Cascades : from G-Protein-Coupled Receptors to Adenylyl Cyclase

Siri Camee van Keulen

In order to adjust to changes in the environment, cells can communicate via signalling cascades. A common pathway for intercellular communication is the G-protein-coupled- receptor (GPCR) signal transduction cascade which is triggered by a (chemical or phy ...

EPFL2017

Modulation of AMPK's activity via genetic tools and food-derived compounds as a novel approach to Parkinson's disease treatment

Wojciech Janusz Bobela

Aging is considered as a major risk factor for Parkinsonâ s disease (PD) and can be defined as a gradual decline in the ability of biological systems to efficiently renew structural and functional components, which may lead to perturbations in energetic h ...

EPFL2016

Learning-Induced Gene Expression in the Hippocampus Reveals a Role of Neuron-Astrocyte Metabolic Coupling in Long Term Memory

Pierre Magistretti, Igor Allaman, Sylvain Eric Lengacher, Gabriele Grenningloh, Monika Tadi

We examined the expression of genes related to brain energy metabolism and particularly those encoding glia (astrocyte)-specific functions in the dorsal hippocampus subsequent to learning. Context-dependent avoidance behavior was tested in mice using the s ...

Public Library of Science2015

Small effects of smoking on visual spatiotemporal processing

Michael Herzog

Nicotine is an important stimulant that is involved in modulating many neuronal processes, including those related to vision. Nicotine is also thought to play a key role in schizophrenia: A genetic variation of the cholinergic nicotine receptor gene, alpha ...

Nature Publishing Group2014

Structure of active dimeric human telomerase

Joachim Lingner

Telomerase contains a large RNA subunit, TER, and a protein catalytic subunit, TERT. Whether telomerase functions as a monomer or dimer has been a matter of debate. Here we report biochemical and labeling data that show that in vivo-assembled human telomer ...

Nature Research2013

Macromolecular Symmetric Assembly Prediction Using Swarm Intelligence Dynamic Modeling

Matteo Dal Peraro, Matteo Thomas Degiacomi

Proteins often assemble in multimeric complexes to perform a specific biologic function. However, trapping these high-order conformations is difficult experimentally. Therefore, predicting how proteins assemble using in silico techniques can be of great he ...

Cell Press2013

Predicting Novel Binding Modes of Agonists to β Adrenergic Receptors Using All-Atom Molecular Dynamics Simulations

Ursula Röthlisberger, Ivano Tavernelli, Marilisa Neri, Stefano Vanni

Understanding the binding mode of agonists to adrenergic receptors is crucial to enabling improved rational design of new therapeutic agents. However, so far the high conformational flexibility of G protein-coupled receptors has been an obstacle to obtaini ...

Public Library of Science2011

The role of NCAM in auditory fear conditioning and its modulation by stress: a focus on the amygdala

Maria del Carmen Sandi Perez

Chronic stress in rodents was shown to induce structural shrinkage and functional alterations in the hippocampus that were linked to spatial memory impairments. Effects of chronic stress on the amygdala have been linked to a facilitation of fear conditioni ...

Wiley-Blackwell2010