In eight chapters, the thesis of Rafaël Vos covers the effect of temperature and pressure on the electrochemical CO2 reduction.

Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink

Promotor: M. Ubbink, Co-Promotor: R. T. Dame

Overkleeft

The aim of this thesis is to develop and study a robust and adaptable scaffold for supramolecular polymer self-assembly in water.

The aim of this thesis is to explore the use of Bioorthogonal Antigens to study the cross-presentation pathway.

In photoactivated chemotherapy (PACT), a biologically active compound is caged by a light-cleavable protecting group.

This dissertation contains four works during my PhD. Different biomaterials have been designed based on coiled-coil peptides. These biomaterials have a range of applications, inclusing drug delivery, cell sorting to cell-cell fusion.

Nature uses a special class of histone proteins, histone variants, to modulate the properties of chromatin at defined genomic locations.

The research presented in this thesis explores the chemotherapeutic potential of metal-based compounds as chemotherapy agents, with an initial focus on the synthesis and DNA interaction studies of platinum and palladium compounds utilizing the [Pt(bapbpy)]2+ scaffold. The study identifies intercalation…

BlaC is the β-lactamase of Mycobacterium tuberculosis. We show that it can recover from inhibition by clavulanic acid and that phosphate helps it do so.

Endocannabinoids are lipid messengers that modulate various physiological functions by activating the cannabinoid CB1 and CB2 receptors. While the metabolism of endocannabinoids and their action at the CB receptors is fairly well studied, the molecular mechanisms governing their release and transport…

Promotor: Prof.dr. G.A. van der Marel, Co-Promotor: J.D.C. Codée

The main goal of this thesis is to achieve advanced control of binding properties in bis-pyrrolic and macrocyclic pyrrolic receptors by light.

The inverse electron demand Diels-Alder (IEDDA) pyridazine elimination emerged in 2013 as a new bioorthogonal reaction and constitutes a prime example of what is now known as dissociative bioorthogonal chemistry. The research described in this Thesis aims to develop synthetic strategies which enable…

In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.

This thesis describes the use of an activity-based proteomics method to study the endocannabinoid system.

The work in this thesis demonstrates how to obtain an atomic-scale picture of a diverse set of complex surface structures observed using STM, under disparate conditions.

This thesis focuses on the synthesis, characterization and performance towards CO2 electroreduction of mono and bi-metallic particles based on p-block metals

A structural investigation of coiled coil peptides used as membrane fusogens, mimicing naturally occuring coiled-coil fusion proteins. Synthetic modifications have been made to alter lipid attachment, secondary structure and to insert photoactive azobenzene moieties for active control over coiled coil…

Promotor: Prof.dr. J.P. Abrahams

Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.

Carbohydrates, alongside proteins and nucleic acids, constitute a crucial and versatile family of biomolecules present in all life forms. They manifest as monosaccharides, oligosaccharides, and polysaccharides, covalently bonded to proteins and fats. Carbohydrates are integral to plant and arthropod…

The disease acute myeloid leukemia (AML) is characterized by fast progression and low survival rates.

Promotor: Prof.dr. M. Ubbink

The research described in this thesis combines the latest insights in lysosomal function with lysosome centred cell signalling.

Promotor: G. J. Kroes

Promotor: Prof.dr. M. Ubbink

This thesis advance our understanding and the application of molecular catalysts relevant to the reduction of oxygen as well as reduction of nitrite.

This work has described synthetic strategies towards well-defined structures resembling capsular polysaccharide (CPS) fragments, CPS mimics, teichoic acid (TA) fragments as well as a third-generation ring-closing tandem metathesis (RCM) linker to better exploit the potential of automated synthesis.

N-acylethanolamines (NAEs), including N-arachidonoylethanolamine (anandamide, AEA), N-palmitoylethanolamine (PEA) and N-oleoylethanolamine (OEA), are signaling lipids that play an important role in different physiological process.

This thesis investigates the relations between metabolism and anatomy through the use of Magnetic Resonance Imaging (MRI).

Sinds de uitbraak van de globale COVID-19 epidemie is het coronavirus dat daarvoor verantwoordelijk was, SARS-CoV-2, al veelvuldig onderzocht. Een van de enzymen belangrijk voor het virus, Mac1, kan bijvoorbeeld worden geremd door stofjes te ontwikkelen die dit enzym kunnen foppen.

Promotie

This thesis explores squaramide-based supramolecular polymers and hydrogels, enhancing their mechanical strength for 3D cell culture.

The primary goal of this research is to deepen our understanding of substrate-enzyme interactions in Glycoside hydrolases. For this purpose, Bacillus circulans xylanase (BcX) has been selected as a well-established model to examine the Michaelis complex and glycosyl-enzyme adduct.

De faculteit biedt een internationale academische omgeving met 36% van de studenten, promovendi en onderzoekers uit het buitenland.

Hoe werken post-translationele eiwitmodificaties—chemische veranderingen van eiwitten nadat ze zijn gemaakt—samen om DNA te herstellen, en hoe kan dit ons helpen ziektes te begrijpen?

Kunnen kleine moleculen het immuunsysteem herstellen en helpen tuberculose te bestrijden door autofagie te stimuleren?

Hoe helpen lipasen in Mycobacterium tuberculosis de bacterie te overleven, en kunnen we deze enzymen gebruiken als doelwit voor nieuwe antibiotica?

Hoe kunnen we efficiënte chemische synthese en klinische microbiologie combineren om nieuwe antibiotica tegen Clostridioides difficile-infecties te ontwikkelen?

Decentralized plug and play systems for energy production are the future picture of our society. Artificial photosynthetic systems are used for this purpose.

Carbohydrates, or sugars, are the most diverse and most abundant biomolecules known. However, the isolation of carbohydrate samples in sufficient amounts and purity is often impractical or even impossible, so the chemical synthesis of glycosides becomes relevant. The glycosylation reaction, in which…

Promotor: G.A. van der Marel, Co-promotor: D.C. Codée

This thesis describes biochemical investigations of glucocerebrosidase (GBA), the lysosomal β- glucosidase that is deficient in Gaucher disease (GD).

The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…

Promotor: M.T.M. Koper, Co-promotor: L. Juurlink

Despite the fact that gold nanoparticles (GNPs) are one of the most studied nanoparticles, there is still a necessity for new approaches allowing for effective protective coating to enable wider use of GNPs in biomedical applications.

Curved single crystals provide variable, but well-defined surface structures.

Cathodic corrosion is a relatively unknown phenomenon that can severely etch metallic electrodes at cathodic (negative) potentials.