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Concept

Serpine

Publications associées (29)

A critical concentration of N-terminal pyroglutamylated amyloid beta drives the misfolding of Ab1-42 into more toxic aggregates

Giovanni Dietler, Francesco Simone Ruggeri

A wide consensus based on robust experimental evidence indicates pyroglutamylated amyloid-beta isoform (A beta pE3-42) as one of the most neurotoxic peptides involved in the onset of Alzheimer's disease. Furthermore, A beta pE3-42 co-oligomerized with exce ...

Elsevier2016

Cryo-EM structure of aerolysin variants reveals a novel protein fold and the pore-formation process

Matteo Dal Peraro, Françoise Gisou van der Goot Grunberg, Mircea Ioan Iacovache

Owing to their pathogenical role and unique ability to exist both as soluble proteins and transmembrane complexes, pore-forming toxins (PFTs) have been a focus of microbiologists and structural biologists for decades. PFTs are generally secreted as water-s ...

Nature Publishing Group2016

AFM-Based Single Molecule Techniques: Unraveling the Amyloid Pathogenic Species

Giovanni Dietler, Francesco Simone Ruggeri, Andrea Cerreta

Background: A wide class of human diseases and neurodegenerative disorders, such as Alzheimer's disease, is due to the failure of a specific peptide or protein to keep its native functional conformational state and to undergo a conformational change into a ...

Bentham Science Publishers2016

The Black cells phenotype is caused by a point mutation in the Drosophila pro-phenoloxidase 1 gene that triggers melanization and hematopoietic defects

Bruno Lemaitre, Maroun Bou Sleiman, Claudine Danielle Patricia Öngen, Olivier Binggeli

Melanization contributes to arthropod-specific innate immunity through deposition of melanin at wound sites or around parasites, with concomitant release of microbicidal reactive oxygen species. Melanization requires sequential activation of proteolytic en ...

Elsevier2015

Phage Selection of Bicyclic Peptides and High-Throughput Screening of Chemical Compounds for the Identification of Novel Inhibitors of the Notch Pathway

Charlotte Marie Urech-Varenne

Notch signaling is a highly conserved developmental pathway that plays important roles in the regulation of cellular processes including cell fate decisions and stem cell maintenance. A tight regulation of the Notch cascade ensures proper tissue homeostasi ...

EPFL2015

A novel UGGT1 and p97-dependent checkpoint for native ectodomains with ionizable intramembrane residue

Maurizio Molinari

Only native polypeptides are released from the endoplasmic reticulum (ER) to be transported at the site of activity. Persistently misfolded proteins are retained and eventually selected for ER-associated degradation (ERAD). The paradox of a structure-based ...

Amer Soc Cell Biology2015

Spectroscopic studies of kinetically trapped conformations in the gas phase: the case of triply protonated bradykinin

Thomas Rizzo, Liudmila Voronina

Understanding the relation between the gas-phase structure of biological molecules and their solution-phase structure is important when attempting to use gas-phase techniques to address biologically relevant questions. Directly after electrospray ionizatio ...

Royal Soc Chemistry2015

Dithiol amino acids can structurally shape and enhance the ligand-binding properties of polypeptides

Christian Heinis, Florence Pojer, Rudolf Hovius, Shiyu Chen, Ranganath Gopalakrishnan

The disulfide bonds that form between two cysteine residues are important in defining and rigidifying the structures of proteins and peptides. In polypeptides containing multiple cysteine residues, disulfide isomerization can lead to multiple products with ...

Nature Publishing Group2014

Active Conformation Control of Unfolded Proteins by Hyperthermal Collision with a Metal Surface

Klaus Kern, Stephan Rauschenbach, Gordon Rinke

The physical and chemical properties of macromolecules like proteins are strongly dependent on their conformation. The degrees of freedom of their chemical bonds generate a huge conformational space, of which, however, only a small fraction is accessible i ...

Amer Chemical Soc2014