1,967 search results for “synthesis he molecular” in the Public website
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Allosteric modulation by sodium ions and amilorides of G protein- coupled receptors
Promotor: A.P. IJzerman
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Heme biosynthesis and regulation in the filamentous fungus Aspergillus niger
Promotors: Prof.dr. P.J. Punt, Prof.dr. C.A.M.J.J. van den Hondel
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Surface Temperature and the Dynamics of H2 on Cu(111)
Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…
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Growth-induced self-organization in bacterial colonies
Mechanical forces are known to play an important role in bacterial colonies. In this dissertation, we study the self-organization at various stages of growing bacterial colonies, and focus on the mechanical effects of cell growth.
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Transfer of graphene by molecular caging
Chemists developed a new graphene-transferring method which makes use of cyclohexane. This new method leaves less impurities on graphene, is easier to handle than current methods and is widely applicable in graphene research. The publication will be on the cover of the journal ACS Central Science late…
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Infrared spectroscopy of astrophysically relevant hydrocarbons
This thesis is about the study of hydrocarbons via infrared spectroscopy.
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Documentation and analysis of !Ora and !Ui languages
This project aims at describing the Khoisan languages !Ora (Korana/Griqua) and !Ui of South Africa.
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Animal Sciences
We perform multidisciplinary research at molecular, cellular, and organismal levels of animal biology to increase fundamental understanding of health and disease.
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The formation of complex organic molecules in dense clouds-Sweet results from laboratory
Large areas of space are filled by molecular clouds that consist of gas and dust grains that are the remnants of dead stars. When these clouds start collapsing, the decreasing temperature and increasing density cause gas particles to start accreting onto dust grain surfaces.
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Fundamental Research in Energy & Sustainability
Twenty years from now, the world population is estimated to be around 9 billion people (now 8 billion). In combination with the improvements in living standards and the corresponding growth in consumption, this population will result in an enormous increase in the demand for food, consumables, water…
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Emilie Didaskalou -
A computational study of structural and excitonic properties of chlorosomes
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…
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Molecular Biology for Physics will NOW start on Monday 5 February!
Please note that the course Molecular Biology for Physics will start on Monday 5 February. Please check the schedules for the time and location!
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State-resolved studies of CO2 gas-surface reactions
The adsorption of D2 and CO2 on catalyst surfaces is studied using a molecular beam in ultra-high vacuum.
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Computational tools and protocols for the development of photoactivated metallodrugs
Metal-organic compounds hold great promise as photoactivated chemotherapy (PACT) agents, leveraging their unique geometric and electronic properties to achieve precise spatiotemporal control over drug activation.
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Diagnostics for mechanical heating in star-forming galaxies
Promotor: F.P. Israel, Co-Promoter: R. Meijerink
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Van Marum Colloquia
The "Van Marum Colloquia" are a collaborative lecture series between the LION and LIC institutes, focusing on fundamental and applied surface science.
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‘I am curious and full of passion for understanding molecular chemistry’
Since May, Assistant professor BioTherapeutics Lu Su works in our faculty. Although she is still young, she already worked in many different fields and co-operated on two publications in big scientific journals. How did she become so successful and what motivates her to keep researching the possibilities…
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Matthijs Hakkennes -
Metals for Catalysis and Sustainability
Central in coordination and organometallic chemistry is the synthesis of new chelating ligands, the synthesis and characterization of metal complexes with these ligands, and the study of their properties. An important goal in my research is to create understanding of the relation between the structures…
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Two NWO ECHO grants for Leiden Chemistry
Two excellent young chemists, Jeroen Codée and Sander van Kasteren, have received an ECHO grant for €260,000 from the Netherlands Organisation for Scientific Research (NWO). This funding will allow them to begin their research projects.
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Exploring the chemical space of natural products from Streptomyces using multi-omics approaches
The increasing resistance of pathogenic bacteria to antibiotics necessitates the discovery of new medicines.
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Why Leiden University?
The Leiden Institute of Chemistry (LIC) offers a unique tailor-made programme in Life Science and Technology. You can customize the programme to your own interests and ambitions with the help of your own personal mentor. Your study will focus on either a biomedical, molecular or biophysical approach…
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Organisation
Research and education at the Leiden Institute of Chemistry is overseen by the Institute Board. The Board and representatives of the two research themes form the Management Team. The Scientific Council (WERA), the Institute Council (I-Raad) and the platform for PhDs and post-doctoral co-workers (LIC73)…
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Inhibitors and probes targeting mannanases
This thesis describes the synthesis and biochemical evaluation of a variety of cyclophellitol based activity-based probes and inhibitors targeting various endo- and exo-acting retaining glycosidases. In the last two decades a variety of probes and inhibitors for (hemi)cellulose degrading enzymes have…
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Copper complexes for bioinspired electrocatalysis relevant to the reduction of oxygen
This thesis advance our understanding and the application of molecular catalysts relevant to the reduction of oxygen as well as reduction of nitrite.
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Galaxies and the structures in which they are embedded
Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…
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Structure-reactivity relationships in glycosylation chemistry
In a typical glycosylation reaction, a donor is activated to form a (variety of) electrophilic species which can react with a nucleophilic acceptor, following a reaction mechanism having both SN1 and SN2 character.
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Highly Accurate Simulations and Benchmarking of Molecule-Surface Reactions
Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.
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Design of selective inhibitors for human immunoproteasomes
The thesis describes the development, synthesis and biological evaluation of several proteasome inhibitor designs. Mainly, this work focusses on designing proteasome inhibitors that selectively inhibit the immunoproteasome, while leaving the constitutive proteasome mostly, if not completely, untouch…
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Inhibitors and probes targeting endo-glycosidases
The chemical synthesis of inhibitors and probes targeting endo-glycosidases.
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Teaching
Research projects for students of the University of Leiden and other Dutch Universities are often available at the MacBio group. The research lines are also described in the Research section. For details of specific projects contact the supervisor (Ubbink, Dame, Boyle, Jeuken or Wentink).
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Sense Jan van der Molen Lab - Physics of Quantum Materials
In our lab, we investigate the physics and material properties of low-dimensional systems.
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Life Science & Technology (MSc)
Improved molecular knowledge of the mechanisms of processes in the cell can lead to better medicines and new or advanced methods for combating diseases. Our MSc students in Life Science and Technology (LST) specifically learn to understand the molecular and structural chemical and biological aspects…
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Research
Research at the Macromolecular Biochemistry group is comprised of the following research themes:
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Dennis Claessen -
The use of activity based protein profiling to study proteasome biology
Promotor: H.S. Overkleeft, Co-Promotor: B.I. Florea
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Isabel Nunez Santiago -
Esther van der Ent -
Flow: A study of electron transport through networks of interconnected nanoparticles
This thesis describes a study from both a theoreticaL and an experimental point of view.
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Chemical reactivity of O2, CO and CO2 on Cu surfaces
Despite the history of studies on methanol formation from CO2, the dominant elementary reaction steps that constitute the chemical mechanism for this catalyzed process are not determined.
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Shining Light on Interstellar Matter
Promotor: H.V.J. Linnartz
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Hybrid zone dynamics in amphibians
Hybrid zones occur where two species meet and produce offspring (hybrids). Typically, hybrids show a considerable reduction in fitness. In this thesis two hybrid zones are treated.
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Minute molecular movements might lead to more efficient biofuel cells
Leiden researchers have found minute movements in the laccase enzyme. This discovery could lead to the development of much more efficient biofuel cells. Publication in Biophysical Journal.
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Activity-based protein profiling of glucosidases, fucosidases and glucuronidases
Promotores: H.S. Overkleeft, G.A. van der Marel, Co-promotor: B.I. Florea
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Inhibitors and probes targeting PslG
Pseudomonas Aeruginosa is a Gram-negative bacterium which can form biofilms, increasing its resistance against antibiotics and the host immune system. Polysaccharides are an integral part of this biofilm, one of these polysaccharides is called Psl. PslG is a glycosidase, able to cleave this polysaccharide,…
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Discovery and development of inhibitors selective for human constitutive proteasome and immunoproteasome active sites
This thesis describes the design and development of subunit‐selective inhibitors of particular catalytically active subunits of human constitutive proteasomes and immunoproteasomes.
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Exploring chemical space in covalent and competitive glycosidase inhibitor design
Glycoside hydrolases (glycosidases/GHs) are widely abundant enzymes in all kingdoms of life and are important biocatalysts that catalyze the hydrolysis of glycosidic linkages in oligo/polysaccharides, glycoproteins and glycolipids with tremendous efficiency
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Chiral Pyrroline-Based Ugi-Three-Component Reactions Are under Kinetic Control
Although it is often assumed that the stereochemistry in Ugi multicomponent reactions is determined in the final Mumm rearrangement step, experimental and computational evidence that Ugi reactions on hydroxylated pyrrolines proceed under kinetic control is reported.
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Stan van Boeckel