Publications associées à Transport protein

Information Theory in Transmembrane Transport

The past decades have seen the advent of information theory in various fields, from quantum physics to cosmology. At an intermediary scale between atomic and cosmological scales are biological systems and in particular the cell, as a constitutive element o ...

EPFL2023

Kidney-Specific CAP1/Prss8-Deficient Mice Maintain ENaC-Mediated Sodium Balance through an Aldosterone Independent Pathway

Simona Frateschi

The serine protease prostasin (CAP1/Prss8, channel-activating protease-1) is a confirmed in vitro and in vivo activator of the epithelial sodium channel ENaC. To test whether proteolytic activity or CAP1/Prss8 abundance itself are required for ENaC activat ...

MDPI2022

Passive and active ion permeation through lipid bilayers investigated by second harmonic water imaging

Maksim Eremchev

Lipid membranes are complex and dynamic systems which are known to mediate signaling processes between cells and their environment. To do this multiple ion channels and pumps are involved in controlling the in- and out-flux of various ions (K+, Na+, Mg2+, ...

EPFL2021

High resolution CryoEM structure of the ring-shaped virulence factor EspB from Mycobacterium tuberculosis

Stewart Cole, Florence Pojer, Jérémie Piton

The EspB protein of Mycobacterium tuberculosis is a 60 kDa virulence factor, implicated in conjugation and exported by the ESX-1 system of which it may also be a component. Previous attempts to obtain high-resolution maps of EspB by cryo-electron microscop ...

2020

Selectively Permeable Double Emulsions

Esther Amstad, Irvine Lian Hao Ong

Natural organisms are made of different types of microcompartments, many of which are enclosed by cell membranes. For these organisms to display a proper function, the microcompartments must be selectively permeable. For example, cell membranes are typical ...

2019

Single-Vesicle Assays Using Liposomes and Cell-Derived Vesicles: From Modeling Complex Membrane Processes to Synthetic Biology and Biomedical Applications

Horst Vogel, Horst Pick, Ana Catarina Rodrigues Alves

The plasma membrane is of central importance for defining the closed volume of cells in contradistinction to the extracellular environment. The plasma membrane not only serves as a boundary, but it also mediates the exchange of physical and chemical inform ...

AMER CHEMICAL SOC2018

Generation and Characterization of Anti-VGLUT Nanobodies Acting as Inhibitors of Transport

Andrea Volterra

The uptake of glutamate by synaptic vesicles is mediated by vesicular glutamate transporters (VGLUTs). The central role of these transporters in excitatory neurotransmission underpins their importance as pharmacological targets. Although several compounds ...

Amer Chemical Soc2017

The role of the equatorial ligands for the redox behavior, mode of cellular accumulation and cytotoxicity of platinum(IV) prodrugs

Hristo Plamenov Varbanov, Sarah Theiner

The current study aims to elucidate the possible reasons for the significantly different pharmacological behavior of platinum(IV) complexes with cisplatin-, carboplatin- or nedaplatin-like cores and how this difference can be related to their main physicoc ...

Elsevier2016

Quality control mechanisms of protein biogenesis: proteostasis dies hard

Maurizio Molinari

The biosynthesis of proteins entails a complex series of chemical reactions that transform the information stored in the nucleic acid sequence into a polypeptide chain that needs to properly fold and reach its functional location in or outside the cell. It ...

Amer Inst Mathematical Sciences-Aims2016

Fixation and Permeabilization Approaches for Scanning Electrochemical Microscopy of Living Cells

Hubert Girault, Horst Pick, Andreas Stephan Lesch, Fernando Cortes Salazar, Tzu-En Lin, Alexandra Bondarenko, Petar Stupar

Scanning electrochemical microscopy (SECM) has been widely used for the electrochemical imaging of dynamic topographical and metabolic changes in alive adherent mammalian cells. However, extracting intracellular information by SECM is challenging, since it ...

American Chemical Society2016

Understanding the metabolism of tetrachloroethene-respiring Dehalobacter restrictus : from genome analysis, corrinoid cofactor biosynthesis to regulation of reductive dehalogenases

Aamani Rupakula Boyanapalli

Tetra- and trichloroethene (PCE, TCE) are organohalides polluting the environment as a result of inappropriate use, storage, and disposal by various industries. Anthropogenic pollution by organohalides is a major source of concern because of their undesira ...

EPFL2015

Vesicle Photonics

Demetri Psaltis, Sylvie Roke, Jeffrey Alan Hubbell, Andreas Vasdekis

Amphiphiles, under appropriate conditions, can self-assemble into nanoscale thin membrane vessels (vesicles) that encapsulate and hence protect and transportmolecular payloads.Vesicles assemble naturally within cells but can also be artificially synthesize ...

Annual Reviews2013

Quantitative fluorescence loss in photobleaching for analysis of protein transport and aggregation

Daniel Sage

Background: Fluorescence loss in photobleaching (FLIP) is a widely used imaging technique, which provides information about protein dynamics in various cellular regions. In FLIP, a small cellular region is repeatedly illuminated by an intense laser pulse, ...

Biomed Central Ltd2012

Hydrophilic Nanogels : Characterization and Behavior in Biological Environment

Catherine Ann Schütz

Hydrophilic nanocarriers, formed by electrostatic interaction between their oppositely charged components, are recognized as nanomaterials with an enormous potential as vectors in biomedical and pharmaceutical applications. However, comprehensive informati ...

EPFL2011

Steady-state brain glucose transport kinetics re-evaluated with a four-state conformational model

Rolf Gruetter, João Miguel das Neves Duarte, Hongxia Lei, Carole Poitry-Yamate

Glucose supply from blood to brain occurs through facilitative transporter proteins. A near linear relation between brain and plasma glucose has been experimentally determined and described by a reversible model of enzyme kinetics. A conformational four-st ...

Frontiers Research Foundation2009

Interleukin 2 immune response generating formulation, used for treating cancer, comprises IL 2 coupled to transport protein, monoclonal anti IL 2 antibody or monoclonal anti CD 25 antibody

NOVELTY - A formulation comprising one or more components chosen from interleukin (IL)-2 or a derivative thereof coupled to a transport protein, a monoclonal anti-IL-2 antibody, a cancer vaccine based on specific antigens of tumors or tumor growth factors ...

2006

On-chip extrusion of lipid vesicles and tubes through microsized apertures

Philippe Renaud

In this work we present the formation of micrometre-sized lipid vesicles and tubes with perfectly homogeneous diameter and extraordinary length. The method is a novel approach for unconventional fabrication of soft-matter microstructured devices based on t ...

2006