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Concept

In-gel digestion

Publications associées (15)

Multienzyme deep learning models improve peptide de novo sequencing by mass spectrometry proteomics

Hamed Khakzad

Author summaryIn recent years, the application of deep learning represented a breakthrough in the mass spectrometry (MS) field by improving the assignment of the correct sequence of amino acids from observable MS spectra without prior knowledge, also known ...

PUBLIC LIBRARY SCIENCE2023

Microfluidics and cell-free synthetic biology in the development of new diagnostic and therapeutic platforms

Grégoire Michielin

In phenylketonuria, absence or malfunction of the phenylalanine hydroxylase enzyme results in toxic accumulation of phenylalanine in the body. An injectable recombinant enzyme therapy was recently approved and has the potential to improve the quality of li ...

EPFL2021

Equilibrium and Out-of-Equilibrium Adherence of Hydrogels against Polymer Brushes

Jennifer Mary Adrienne Alice Macron

At low pH, underwater adherence between poly(N,N-dimethylacrylamide) hydrogels and poly(acrylic acid) brushes is due to the formation of multiple hydrogen bonds. The effect of the key parameters controlling the formation of these interactions (contact time ...

American Chemical Society2018

Middle-down approaches for mass spectrometry-based protein identification and characterization

Kristina Srzentic

Mass spectrometry (MS) has emerged over the last two decades as the analytical technique of choice in systems-level protein studies, known as proteomics. Two are the MS-based approaches generally applied to proteomics: bottom-up (BU), which relies on the p ...

EPFL2016

Crystalline and Soft Materials Based on Dative Boron-Nitrogen Bonds

Nicolas Luisier

The thesis describes the utilization of dative boron-nitrogen bond is used for the construction of new materials. In chapter 2.1, the synthesis of new organogels based on bisimidazolyl ligands and diboronate esters is described. Gels with a critical gel co ...

EPFL2016

Porous silica enhanced proteolysis during Off-Gel separation for efficient protein identification

Hubert Girault, Liang Qiao, Mohammad Reza Pourhaghighi

An advanced approach is developed in this work for simultaneous on-line separation and digestion of proteins by combining the Off-Gel isoelectric focusing (IEF) and enzymatic nanoreactor enhanced proteolysis. The nanoreactor was prepared by preloading tryp ...

Elsevier2015

Numerical experiments with MALDI Imaging data

Pierre Vandergheynst, Mohammad Golbabaee

This article does not present new mathematical results, it solely aims at discussing some numerical experiments with MALDI Imaging data. However, these experiments are based on and could not be done without the mathematical results obtained in the UNLocX p ...

Springer2014

From food to physiology characterization and in vitro digestion of milk products and investigation of postprandial metabolism and inflammation after a high-fat meal intake in a human nutrition intervention study

Flurina Schwander

According to the World Health Organization worldwide obesity has more than doubled since 1980. The World health statistics 2012 report shows that one in six adults is obese, one in ten diabetic and one in three has a raised blood pressure. Overweight and o ...

EPFL2013

Tailoring hydrogel degradation and drug release via neighboring amino acid-controlled ester hydrolysis

Jeffrey Alan Hubbell, Matthias Lütolf, Yun Suk Jo

We present a versatile scheme to rationally modulate the hydrolysis rate of ester bonds in hydrophilic polymer networks via adjacent charged amino acids. As soluble model systems, two cysteine-bearing oligopeptides containing either positively charged argi ...

2009

Of gels, offgel and off with the gel : development of isoelectric focusing tools for proteomics

Hoang-Trang Lam

In the context of prefractionation methods for proteomics, this work deals mainly with the development of electrophoretic tools for isoelectric focusing of peptides and proteins for the analysis of biological mixtures. In the light of existing devices for ...

EPFL2008

Scanning Electrochemical Microscopy as a Readout Tool for Protein Electrophoresis

Hubert Girault, Gunther Wittstock

Scanning electrochemical microscopy (SECM) was used to image silver-stained proteins on a poly(vinylidene difluoride) membrane. The method is based on measuring the current at a scanning microelectrode in the feedback mode. The electrochemical feedback is ...

2007

Multilayer-Assembled Microchip for Enzyme Immobilization as Reactor Toward Low-Level Protein Identification

Hubert Girault

A microchip reactor has been developed on the basis of a layer-by-layer approach for fast and sensitive digestion of proteins. The resulting peptide analysis has been carried out by matrix-assisted laser desorption ionization timeof- flight mass spectromet ...

2006

Cohesive and adhesive properties of polycaprolactone/silica hybrid coatings on poly(methyl methacrylate) substrates

Jan-Anders Edvin Maansson, Yves Leterrier, Bandeep Singh

Organic–inorganic hybrid materials were prepared using the sol–gel process in order to improve the scratch resistance of poly(methyl methacrylate) (PMMA) substrates. Sol–gel solutions based on tetraethoxysilane and α,ω-triethoxysilane terminated polycaprol ...

2006

On-Line Counting of Cysteine Residues in Peptides during Electrospray Ionization by Electrogenerated Tags and Their Application to Protein Identification

Hubert Girault, Christophe Roussel, Niels Erik Lion, Michel Prudent, Loïc Dayon

The electrochemically induced mass spectrometric tagging of cysteines by substituted hydroquinones was studied for peptides in a classical electrospray solvent (i.e., MeOH/H2O/AcOH 50/49/1). The tagging efficiency was tested with different hydroquinone com ...

2005

Engineering of the human O6-alkylguanine DNA alkyltransferase

Alexandre Juillerat

Recently, a new method for the specific covalent labeling of fusion proteins in vitro and in living cells has been developed. This method is based on the unusual mechanism of a DNA repair protein: the O6-alkylguanine DNA alkyltransferase (AGT). In addition ...

EPFL2005