Publications related to Gi alpha subunit

Structure of a membrane-bound menaquinol:organohalide oxidoreductase

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

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

Computationally designed GPCR quaternary structures bias signaling pathway activation

Patrick Daniel Barth, Robert Everett Jefferson

Communication across membranes controls critical cellular processes and is achieved by receptors translating extracellular signals into selective cytoplasmic responses. While receptor tertiary structures can be readily characterized, receptor associations ...

Nature Research2022

Apelin-13 Protects Corpus Cavernosum Against Fibrosis Induced by High-Fat Diet in an MMP-Dependent Mechanism

Nikolaos Stergiopoulos, Mikaël Nils Sturny, Rafaela Fernandes Da Silva, Augusto Martins Lima, Fabiana Pereira Da Costa Fraga, Maiia Bragina, Léa Liliane Colette Anguenot

Background: An increased fibrosis of the corpora cavernosa is a prevalent process that underlies most cases of erectile dysfunction. Apelin, an endogenous circulating peptide, has been documented as an important effector on cardiovascular homeostasis, cont ...

ELSEVIER SCI LTD2021

Structural basis of the activation of the CC chemokine receptor 5 by a chemokine agonist

Henning Paul-Julius Stahlberg, Nicolas Calo, Polina Isaikina

The human CC chemokine receptor 5 (CCR5) is a G protein-coupled receptor (GPCR) that plays a major role in inflammation and is involved in cancer, HIV, and COVID-19. Despite its importance as a drug target, the molecular activation mechanism of CCR5, i.e., ...

AMER ASSOC ADVANCEMENT SCIENCE2021

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

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

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

GABA A receptors in the ventral tegmental area control the outcome of a social competition in rats

Maria del Carmen Sandi Perez, Michael van der Kooij, Ioannis Zalachoras

Social dominance can be attained through social competitions. Recent work in both humans and rodents has identified trait anxiety as a crucial predictor of social competitiveness. In addition, the anxiolytic GABAA positive modulator, diazepam, injected eit ...

2018

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

Anita Nasrallah, Caterina Collodet, Judit Castillo Armengol

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

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

Alpha7 subunit of the nicotinergic acethylcholine receptor gene (CHRNA7) and perception of coherent motion in aging

Michael Herzog

Genetic variations of the alpha7 subunit of the nicotinergic acetylcholine receptor gene (CHRNA7) are linked to cognitive deficits in aging and schizophrenia. However, little is known about associations of the CHRNA7 gene with aged-related decline in visua ...

2016

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

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

W246(6.48) Opens a Gate for a Continuous Intrinsic Water Pathway during Activation of the Adenosine A(2A) Receptor

Horst Vogel, Shuguang Yuan, Zhenquan Hu

The question how G-protein-coupled receptors transduce an extracellular signal by a sequence of transmembrane conformational transitions into an intracellular response remains to be solved at molecular detail. Herein, we use molecular dynamics simulations ...

Wiley-VCH Verlag GmbH2015

The mitochondrial unfolded protein response in mammalian physiology

Johan Auwerx, Adrienne Joëlle Laurence Mottis, Virginija Jovaisaite

Mitochondria, the main site of cellular energy harvesting, are derived from proteobacteria that evolved within our cells in endosymbiosis. Mitochondria retained vestiges of their proteobacterial genome, the circular mitochondrial DNA, which encodes 13 subu ...

Springer Verlag2014

Long-term behavioral programming induced by peripuberty stress in rats is accompanied by GABAergic-related alterations in the amygdala

Maria del Carmen Sandi Perez, Stamatina Tzanoulinou, Vandana Veenit

Stress during childhood and adolescence is a risk factor for psychopathology. Alterations in γ-aminobutyric acid (GABA), the main inhibitory neurotransmitter in the brain, have been found following stress exposure and fear experiences and are often implica ...

Public Library of Science2014

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 Publishing Group2013

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

Polarity mediates asymmetric trafficking of the G beta heterotrimeric G-protein subunit GPB-1 in C. elegans embryos

Pierre Gönczy, Kalyani Thyagarajan

Asymmetric cell division is an evolutionarily conserved process that gives rise to daughter cells with different fates. In one-cell stage C. elegans embryos, this process is accompanied by asymmetric spindle positioning, which is regulated by anterior-post ...

2011