1,653 search results for “molecular genetics” in the Public website
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Nucleosome stacking in chromatin fibers probed with single-molecule force- and torque-spectroscopy
In human cells, a meter-long DNA is condensed inside a micrometer-sized cell nucleus. Simultaneously, the genetic code must remain accessible for its replication and transcription to functional proteins.
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Regulation of actomyosin contraction as a driving force of invasive lobular breast cancer
In this thesis, we used genetically engineered mouse models and a variety of cell-culture based assays to identify genes and pathways that are involved in the development and treatment of invasive lobular carcinoma (ILC).
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Spatial populations with seed-bank
In populations with a seed-bank, individuals can temporarily become dormant and refrain from reproduction until they can become active again. The repository of all dormant individuals in the population is called the seed-bank. Seed-banks are observed in many taxa, including plants, bacteria and other…
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Finding and valorizing new antibiotics using AI
Antibiotics are a class of medicine most people take for granted. But pathogenic bacteria are becoming more and more resistant to our antibiotics, and this poses a great challenge for future treatments. There is thus a great societal need to identify new molecules that can address new targets and be…
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Unravelling East Africa’s Early Linguistic History (LHEAf)
This project investigates the rich linguistic history of the crucial language groups in East Africa and includes a search for words that indicate earlier lost languages. These outcomes, combined with recent archaeological and genetic research, will contribute to a new understanding of East Africa’s…
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Shy parent, shy child?
Delineating psychophysiological endophenotypes of social anxiety disorder
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Mechanisms and consequences of horizontal gene transfer in cell wall-deficient cells of Kitasatospora viridifaciens
The bacterial cell wall is a nearly universal structure that offers protection and gives the cell its shape. However, environmental stressors, such as cell wall-targeting antibiotics and hyperosmotic conditions, can induce bacteria to shift to a wall-deficient state. It is unknown whether the lack of…
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Genetics and Life Course Epidemiology of Cardiometabolic Disease
PhD defence
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Healthy ageing
The elderly accept may minor discomforts like stiffer muscles and getting tired more quickly, but they do want to go to their children's birthdays independently. Preventive elderly care helps people with that. The goal is to let people grow old while maintaining their self-reliance and independence…
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Research lines
Physics and Engineering Approaches to Biomedicine and Pharmacology
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Collaborating on big data to unravel disease processes
Patients with the same illness often receive the same treatment, even if the cause of the illness is different for each person. This represents a new step towards ultimately being able to offer every patient more personalised treatment.
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Our people
Some examples of AI-research done at Leiden.
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Solvent effects in the electrocatalytic reactions of water
Koper
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Towards artificial photosynthesis: resolving supramolecular packing of artificial antennae chromophores through a hybrid approach
Promotor: H.J.M. de Groot
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Education
Education & outreach
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Chemical Biology
Chemical biology research at the Leiden Institute of Chemistry is aimed at understanding biological processes at the molecular level to strengthen the knowledge base of human health and disease. The approach to achieve this goal is a fundamental chemical one; with the aid of chemical probes biological…
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Metagenomics for community ecology; a next generation of eDNA monitoring tool for biomass studies in freshwater environments
How can we quantify the density of species within a community through environmental DNA concentrations?
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Neandertal Legacy
The genetic material of currently living Europeans is partly of Neandertal origin. Were our ancestors successful because they were hybridising and interacting with the local populations they encountered when migrating into new places? Reconstructing our evolutionary trajectory is key for rethinking…
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Unlocking the chemistry of the heavens
How are the building blocks of life formed?
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Skin Lipids: Localization of Ceramide and Fatty Acid in the Unit Cell of the Long Periodicity Phase
The lipid matrix of the skin's stratum corneum plays a key role in the barrier function, which protects the body from desiccation. The lipids that make up this matrix consist of ceramides, cholesterol, and free fatty acids, and can form two coexisting crystalline lamellar phases: the long periodicity…
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Microbial Induction of Plant Resilience to Drought Stress (MicroRes)
What are the genes and molecular mechanisms involved in bacteria-mediated plant drought tolerance?
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Scanning mutagenesis in a yeast system delineates the role of the NPxxY(x)(5,6)F motif and helix 8 of the adenosine A(2B) receptor in G protein
Source: Biochem Pharmacol, Volume 95, Issue 4, pp. 290-300 (2015)
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Leiden Institute of Chemistry
The Leiden Institute of Chemistry (LIC) is the basis for research and collaborations of the Leiden chemistry groups. Chemistry is the central science enabling a healthy future in a sustainable society. Chemistry researchers at Leiden University take a fundamental approach in finding tailored solutions…
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Cuba
This is an Erasmus+ International Credit Mobility project of Leiden University Medical Center with the University of Havana.
- About this minor
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biological systems: From nanopore-forming toxins to a chemical-genetic system to map ZDHHC-specific S-acylation
Lecture
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Teaching
At Molecular Physiology we teach the following courses within the Leiden Institute of Chemistry's Chemistry and Life Science and Technology programmes.
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Role of integrin adhesions in cellular mechanotransduction
Promotor: B. vd Water, T. Schmidt, Co-Promotor: E.H.J. Danen
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Towards in-cell structural study of light-harvesting complexes : an investigation with MAS-NMR
Light-Harvesting Complex II (LHCII) is responsible for light absorption and excitation energy transfer in plants and photosynthetic algae, while in high light it undergoes conformational changes by which it quenches excitations to prevent photodamage.
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China Region Group
The China Region Group develops and monitors Leiden University's cooperation with China. It is chaired by the Dean of the Faculty of Science, Prof. Jasper Knoester, and consists of representatives of Leiden University's faculties and various policy departments.
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Cannabinoid CB2 receptor ligand profiling reveals biased signalling and off-target activity, Nat. Commun., 2017
The cannabinoid CB2 receptor (CB2R) represents a promising therapeutic target for various forms of tissue injury and inflammatory diseases. Although numerous compounds have been developed and widely used to target CB2R, their selectivity, molecular mode of action and pharmacokinetic properties have…
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Orchid mycorrhizal interactions: evolutionary trajectories and ecological variations
The mycorrhizal symbiosis is among the most widespread species interactions on Earth. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries.
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Fast Oxygen Reduction Catalyzed by a Copper(II) Tris(2‐pyridylmethyl)amine Complex through a Stepwise Mechanism
The mechanism of the electrochemical reduction of dioxygen by a mononuclear pyridylalkylamine copper complex was investigated (see picture). It was shown that in neutral aqueous solution dioxygen undergoes stepwise reduction, wherein hydrogen peroxide plays a key role. The rate constants determined…
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Development & Disease in Animal Sciences
Animal Sciences’ contributions to the Development & Disease research theme include the mechanisms and evolution of embryonic development, the development of cognitive mechanisms, and animal models for understanding mechanisms of human disease.
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Bioactive Molecules in Animal Sciences
Animal Sciences’ contribution to the Bioactive Molecules research theme includes research on molecules from natural sources, such as plants, insects, and snake venom, with the aim to identify novel anti-cancer, anti-inflammatory, anti-microbial, and anti-diabetic agents.
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Orion's Dragon and Other Stories
Stellar feedback is a crucial ingredient in the evolution of galaxies.
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Electrocatalysis for sustainable energy
Marc Koper’s research focuses on electrocatalysis and electrochemical surface science for sustainable energy and chemistry. Reactions of interest are the redox reactions of the oxygen/hydrogen cycle (water oxidation, hydrogen evolution), the carbon cycle (reduction of carbon dioxide, oxidation of small…
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Bridging the gap between physics and chemistry in early stages of star formation
A dense region of a gaseous and dusty cloud collapses to form a protostar surrounded by a disk and an envelope. This thesis uses both observations and models to study physical and chemical conditions of these protostellar systems which are likely where planets start to form.
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Chemical Tools to Illuminate N-acylphosphatidylethanolamine Biosynthesis
This thesis describes the development and optimization of the first molecular tools to study the enzyme PLA2G4E.
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Towards Optical Detection of a Single Electron
Single-molecule spectroscopy has become a powerful method for using organic fluorescent molecules in numerous applications.
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Protoplanetary disk anatomy: examining the structure and chemistry of planetary birthplaces with simple molecules
This thesis examines the link between simple molecules and the underlying structure and chemistry within protoplanetary disks - the birthplaces of planets.
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In vitro model systems for studying the impact of organic chemicals on the skin barrier lipids
This paper describes two synthetic lipid models designed to replace human stratum corneum (SC) in studies of the impact of volatile organic chemicals on the molecular organization of the skin barrier lipids.
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Unveiling protostellar disk formation around low-mass stars
Promotor: Prof.dr. E.F. van Dishoeck, Co-promotor: S. Bruderer
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Jose G. Vallarino
PhD at Molecular Biology and Biochemistry Department, University of Malaga - Spain
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Affinity-based profiling of the adenosine receptors
The adenosine receptors are proteins that reside in the extracellular membranes of cells. Activation of adenosine receptors plays a role in many physiological and pathological processes, such as immune responses and cancers.
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Single-molecule fluorescence in sequence space
The sequence-dependence of biomolecular interactions involving nucleic acids and proteins is essential for numerous processes inside the cell. Insights into the underlying molecular mechanisms have been obtained using various biochemical and biophysical methods on two different levels — bulk and sin…
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Bayesian uncertainty quantication in complex models
The aim of this project is to determine in which cases uncertainty statements resulting from a Bayesian statistical analysis can be trusted.
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Searching for the concrete subject: On the epistemic role of lived-experience in Paul Natorp's critical epistemology
The following dissertation reconstructs Paul Natorp's philosophical psychology. It argues that psychology's main object is the lived experience of concrete subjects, understood as a transcendental structure of logical-reflexive conditions for the recognition, appropriation, and evaluation of objective…
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Robert Zwijnenberg: what makes us human?
Advanced biotechnology allows us to select or alter the genetic makeup of human embryos. What limits do we impose on biotechnological intervention in nature and the human body? And whose call is that?