This thesis presents the first synthetic peptides ADP-ribosylated on serine, threonine, tyrosine, arginine and cysteine.

Multicellular giant algae Chara species have been widely used in physiological studies for decades.

In this thesis, classes of strongly interacting quantum field theories, have been studied.

The Dutch atlas with pesticides concentrations in surface waters have been overhauled. This new, free accessible, website is in line with the European Framework Directive on Water (In Dutch: KRW).

A remarkable population of short period transiting rocky exoplanets with equilibrium temperatures on the order of 2,000 K has recently been discovered.

Carbohydrates are present on the surface of bacteria making them suitable antigen candidates for vaccine development. This thesis deals with the synthesis of two carbohydrate-based components; the capsular polisaccharide of S. aureus type 5 and teichoic acids from staphilococci and enterococci speci…

Traditional drug discovery approaches have been hampered by (in vitro) cell-culture models that poorly represent the situation in the human body.

Promotor: Prof.dr. E. Deprettere

Supervisor: P.J.J. Hooykaas Co-Supervisor: R. Offringa

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.

Van onderwijs tot een verrijkende ervaring

Een groep van 30 excellente studenten uit de hele wereld bracht vorige week een bezoek aan Estec, het ruimtevaartcentrum in Noordwijk. Een groot deel van die groep is door de Sterrewacht van de Universiteit Leiden geselecteerd voor deelname aan een drie maanden durend onderzoeksprogramma 'Leiden/ESA…

Publicaties die verschijnen in het kader van het onderzoeksproject Zelfredzaamheid en sociale bescherming over de levenscyclus.

What would be the environmental performance of the Carbon4PUR technology at industrial scale in the future?

Sommige bacteriën blijken net als wij eiwitten te hebben die het DNA in hun cellen organiseren. Die doen dat alleen net even anders. Dat blijkt uit nieuw onderzoek van bio-chemici van het Leiden Institute of Chemistry en het Max Planck Institute for Biology. De ontdekking helpt ons beter begrijpen hoe…

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…

Het Dual PhD Centre bestaat om een bijzondere groep promovendi aan de Universiteit Leiden extra ondersteuning te bieden: de duale promovendi.

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.

Pericytes, the mural cells of blood microvessels, are important regulators of vascular morphogenesis and function that have been postulated to mechanically control microvascular diameter through as yet unknown mechanisms.

CrO2, a half-metal ferromagnet, has shown great promise for superconducting spintronics applications for nearly two decades.

This paper describes the development process of voting behavior in Chile; particularly the relationship between the class voting theory and the theory of cultural post-materialist vote is investigated. This research deals with Chile as a case study, a developing country with a relatively stable democracy…

Over the past years it has been discovered that the population of extra-solar planets is large and diverse.

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

The work in this thesis has been focused on two subjects. The first is the assembly of alginate oligosaccharides and the generation of building blocks for the enzymatic synthesis of alginate, and the second is the total synthesis of large fragments of the zwitterionic SP1 polysaccharide.

Nicotinamide adenine dinucleotide (NAD+) is the substrate used for the introduction of the ubiquitous and highly dynamic PTM in which either one or multiple adenosine diphosphate ribose (ADPr) moieties are covalently attached to a nucleophilic side chain of an specific amino acid in the target protein…

De oorlog in Oekraïne gaat een nieuwe fase in met de aankondiging van een gedeeltelijke Russische militaire mobilisatie en de wens om vier Oekraïense regio’s te annexeren. Waarom neemt Poetin deze beslissingen juist nu en welke gevolgen hebben ze voor het verloop van de oorlog? We bellen erover met…

De oorlog in Oekraïne duurt inmiddels bijna twee weken. Wat denkt Poetin te bereiken met zijn inval en hoe groot is de kans dat het westen betrokken raakt bij de oorlog? We bellen erover met hoogleraar en Ruslandkenner André Gerrits.

In the search for sustainable energy solutions, the idea of artificial photosynthesis has been proposed as an approach with which to use water and sunlight to produce hydrogen.

This thesis aims to enhance our understanding of galaxies by testing theoretical models of galaxy formation against observations, particularly in the cases of extreme systems which have been found to have an excess of baryonic mass in their central regions, in the form of either supermassive black holes…

Promotores: Prof.dr. P.C.W. Hogendoorn & Prof.dr. H.P. Spaink Co-promotor: Dr. B.E. Snaar-Jagalska

Due to their central physiological roles in living organisms, retaining beta-glycosidases have been the subject of tremendous research efforts to examine their structure/function relation using numerous biophysical and biochemical approaches.

Materials balances have been used in the recent past for the analysis of substance oriented environmental problems and the formulation of measures for environmental policy. In this study an integrated tool, based on the materials balance principle, has been developed for the analysis of both environmental…

The solar system was formed approximately 4.56 billion years ago. Despite the numerous theories that have been developed over the years, the formation and evolution of the solar system still remain unclear.

Voordrachten in het kader van het onderzoeksproject Zelfredzaamheid en sociale bescherming over de levenscyclus (aug. 2017 – dec. 2023).

GLOBOX is a spatially differentiated multimedia fate, exposure and effect model. It is used for the calculation of spatially differentiated LCA characterisation factors on a global scale.

Met het nieuwe studiejaar is bij de Honours Academy ook een nieuwe assessor aangetreden: Maarten Kolpa. Wat doet een assessor eigenlijk? En wat kan hij voor studenten betekenen? Maarten vertelt erover in een interview. “Ik vind het belangrijk dat het studentenperspectief vooropstaat.”

Do sustainability values play a role in motivating people to act for biodiversity in successful projects and in successful leadership action? And how could these values be incorporated in current economic valuation methods?

Joris Larik, universitair docent bij LUC, schrijft in Het Parool over de invloed van de winst van Joe Biden op de rol van de VS in de wereldpolitiek

Op 10 november 2021 verdedigde Carmel van Niekerk-Jacobs het proefschrift 'Realising the right to reproduce with assistance in South Africa'. Het promotieonderzoek is begeleid door prof.dr. J.J. Sloth-Nielsen en prof.dr. T. Liefaard.

Development of indicators to assess decoupling of economic development and environmental pressure in the EU-25 and AC-3 countries.

This project uses archaeological, literary and epigraphic evidence to investigate urban development in Roman-period North Africa, compiling this in a GIS-linked database in order to analyse the development of urban settlement spatially over time.

The Sundanese people, the largest ethnic group in West Java, have been using traditional medicine for a long time. Known as ubar kampung, Sundanese indigenous knowledge, beliefs and practices of traditional medicine are based on local people’s knowledge and use of Medicinal, Aromatic, and Cosmetic (MAC)…

This report investigates the different approaches in the authorization process of GMOs for commercial use in the European Union and the United States of America. Three main aspects are considered and analyzed as potential causes of differences in the authorization process of GMOs for commercial use.…

1) Assess the trends in supply and production status of these critical minerals and mineral products worldwide and Europe’s dependence including on intermediate products such as permanent magnets, RE based super alloys, batteries, polishing compounds, phosphors, catalysts etc. 2) Trace the entire value…

Review of new technical decisionsupport systems in the environmental field, and application in water management decission processes.

This study has been carried out in the community of Sukamiskin, a kelurahan (‘village’) in Bandung, the Capital of West Java Province, located in the Sunda Region of Indonesia.

It has been a long-standing mystery how complex biological structures emerge from such seemingly uncoordinated building blocks as cells and tissues, in the presence of only minimal environmental guidance.

Food security is challenged by a growing global population and by climate change. Drought and soil salinity are considered the most important ones that inhibit crop yield and distribution. Worryingly, climate change is predicted to increase not only their frequency and severity, but also their co-occurrence,…

Until the 1990s, the only known planets were those in our Solar System. Three decades later, several thousand exoplanets have been discovered orbiting stars other than the Sun, and substantial efforts have been made to explore these strange new worlds through spectroscopic analyses of their atmosphe…