795 search results for “bioactive molecules” in the Public website
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Annemarie Meijer
Science
a.h.meijer@biology.leidenuniv.nl | +31 71 527 4927
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Perfect for designing new molecules
Even a small quantum computer should be able to simulate exactly the properties and behaviour of new molecules. This would take chemistry to an entirely new level. Better solar panels, more powerful batteries, saving lots of energy in the chemical industry: the applications have the potential to transform…
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The scientists behind LED3
LED3 is the combined effort of three excellent institutes of Leiden University. Through joined hands, we are able to give rise to a more effective early drug discovery pipeline. Let us briefly introduce the three institutes.
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Plasmonic enhancement of one-photon- and two-photon-excited single-molecule fluorescence by single gold nanorods
This thesis is a collection of experimental attempts to enhance photoluminescence of fluorescent molecules and quantum dots with single gold nanorods (GNRs) and relevant applications.
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TARGETBIO: Transmission of Antimicrobial Resistance Genes and Engineered DNA from Transgenic Biosystems in Nature
This project aims to assess the risk of spread of antimicrobial resistance genes in the environment derived from currently used synthetic biology approaches in the field of drug discovery.
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Greenifying industrial biotechnology through the creation of synthetic endosymbionts
Is it possible to synthesize industrially relevant compounds in a sustainable manner through the use of light-capturing cyanobacteria?
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The role of 14-3-3 proteins in ion homeostasis in the yeast Saccharomyces cerevisiae
We aim to understand ion homeostasis in the model eukaryote S. cerevisiae.
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Packaging and accessing DNA molecules
Our DNA molecules are packaged by proteins in compact structures. The aim of this project is to understand how modern gene editing techniques nevertheless get access to their target in the DNA.
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Development of new antibiotics from plant-originated products
Utilization of plant-originated products as new antibiotics
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PROTEOMINING: a novel proteomics-based pipeline for drug and enzyme discovery in filamentous actinomycetes
Can a new proteomics workflow be developed to link genes and gene clusters to bioactive molecules, identify novel compounds and enhance the production in the Streptomyces lividans enzyme?
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Sequencing biological molecules with graphene
Schneider
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pharmacognostic study of Vernonia guineensis Benth. (Asteraceae): bioactivity, safety, and phytochemical analysis
Promotor: Prof.dr. R. Verpoorte, , Co-Promotor: Young Hae Choi
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Michel Orrit Lab - Single Molecule Optics
Since the early 1990s, one can isolate the optical signal of a single molecule and single-molecule spectroscopy has quickly grown into an important research field.
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Snake venom glands grown in lab
For the first time, researchers were able to grow organoids from snake venom glands. The lab-grown 3-D structures can produce snake venom molecules. This is a major step in finding treatments to tackle snakebite, which causes over 100,000 deaths each year. Publication in top journal Cell.
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The hunt for frozen organic molecules in space
Complex Organic Molecules (COMs) have been detected in objects across different stages of stellar evolution.
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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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IBL Spotlights
During the IBL Spotlights, researchers of our department discuss their newest findings and achievements. After the lectures, you are all invited to the reception on the first floor of the Sylvius building.
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Electronic spectroscopy of molecules of astrophysical interest
This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).
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Cheminformatics: Analyzing small-molecule activity data
While bioinformatics methods deal with the analysis of sequence information (be it proteins or DNA), the field of cheminformatics is concerned with the analysis of small-molecule datasets.
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Molecules during stellar formation and death
Promotor: Prof.dr. E. F. van Dishoeck, Co-promotor: A. N. Heays
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Disentangling a complex genus: systematics, biogeography and bioactivity of the genus Phyllanthus L. and related genera of tribe Phyllantheae
The largest genus within the Phyllanthaceae family is a group called Phyllanthus L. Recent studies have shown, that Phyllanthus is paraphyletic with the genera Glochidion, Breynia and Synostemon nested within it.
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Altruism in bacteria: colonies divide the work
Bacteria found in soil specialise in the colony by division of labour. Some of the bacteria produce antibiotics, even when it comes at the expense of their individual reproduction success, to defend their colony against competitors. Publication in Science Advances.
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Thomas Schmidt Lab - Single Molecule Microscopy
Intrigued by the way cells autonomously regulate their fate, we strive to understand and visualize cellular processes as the basis of Cell Signaling.
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High-throughput screening for developmental and reproductive toxicity
Can chemical safety assessment be improved with zebrafish embryo-based reporter assays?
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Regulation of enzyme production in fungal cell factories
Our object is to identify and characterize transcription factors involved in lignocellulosic biomass degradation in the filamentous fungus Aspergillus niger.
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Fungal Chitosans from Fermentation Mycelia for Plant Biostimulants (FunChi)
Our focus is to optimize the fungal cell wall to both increase chitin production and chitin extractability.
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Functions of autophagy in the filamentous fungus Aspergillus niger
What are the functions of autophagy in the filamentous fungus Aspergillus niger?
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Novel immunomodulatory drugs for tuberculosis treatment
Can drugs that target host signaling pathways be used to eradicate antibiotic-resistant bacteria?
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Small-molecule inhibitors of bacterial metallo-β-lactamases
The main focus of the thesis is the discovery and development of novel inhibitors of bacterial metallo-β-lactamases (MBLs).
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Nathaniel Martin: why won’t antibiotics cure us anymore?
Current means of fighting bacteria are no longer as good as they used to be because of antibiotic resistance. These days, people are dying from bacterial infections that could have been cured fifty years ago.
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Nathaniel Martin in podcast about antimicrobial resistance
Professor Biological chemistry Nathaniel Martin from the Institute of Biology Leiden is interviewed by the Netherlands Innovation Network on innovative scientific approaches. He talks about his work on designing new antibiotics and developing new molecules to make resistant bacteria susceptible again…
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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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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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Versatile SNP genotyping
The SNP genotyping line offers flexible genotyping for small and large projects at affordable price and high quality. The use as SNPs as molecular markers is very versatile and can be used for a wide variety of scientific questions ranging from paternity analysis, conservatuion genetis towards QTL…
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Chemical biology of antigen presentation by MHC molecules
MHC class I and MHC class II molecules present peptides to the immune system to drive proper T cell responses. Pharmacological modulation of T-cell responses can offer treatment options for a range of immune-related diseases.
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Ultrasensitive in situ visualization of active glucocerebrosidase molecules
Deficiency of glucocerebrosidase (GBA) underlies Gaucher disease, a common lysosomal storage disorder. Carriership for Gaucher disease has recently been identified as major risk for parkinsonism. Presently, no method exists to visualize active GBA molecules in situ. We here report the design, synthesis…
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Charge transport properties of Ru-complex molecules: the influence of humidity
I will give a general introduction to the field of molecular electronics, its history, methods and challenges. I will also introduce the subject of my investigation and provide a brief outlook to the remainder of our thesis.
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Towards chemically accurate simulation of molecule-surface reactions
This perspective addresses four challenges facing theorists whose aim is to make quantitatively accurate predictions for reactions of molecules on metal surfaces, and suggests ways of meeting these challenges, focusing on dissociative chemisorption reactions of H2, N2, and CH4.
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Unraveling the mechanism of multicopper oxidases: from ensemble to single molecule
Promotores: Prof.dr. G.W. Canters, Prof.dr. T.J. Aartsma
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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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NMR structural studies of protein-small molecule interactions
Promotor: M. Ubbink, Co-promotor: G. Siegal
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High-throughput profiling of small molecules using mass spectrometry
Promotor: Prof.dr. T. Hankemeier, Co-Promotor: R.J. Vreeken
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Plant Sciences
The mission of the Plant Sciences cluster is to contribute to the sustainable production of high-quality crops, flowers and high-value bio-based products, and to contribute to the maintenance and restoration of biodiversity in natural ecosystems. This is realised by generating fundamental knowledge…
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Institute of Biology
Nature is a never-ending source of inspiration for the researchers at the Institute of Biology Leiden (IBL). Based on a better fundamental understanding of nature, they are able to seek solutions in the area of health and biodiversity. The theme of IBL is ‘Harnessing biodiversity for health.’
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Stable single molecules for quantum optics and all-optical switches
Promotor: Prof.dr. M.A.G.J. Orrit
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Applications of Natural Deep Eutectic Solvents to Extraction and Preservation of Biomolecules
The recently introduced nature-originated deep eutectic solvents, so-called natural deep eutectic solvents (NADES) are considered as truly green solvents, which composed of natural ingredients found abundantly in organisms.
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Beyond the Born-Oppenheimer Static Surface Model for Molecule- Surface Reactions
Several techniques are explored for going beyond the born-oppenheimer static surface model for molecule-surface reactions.
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Two-photon multifocal microscopy for in vivo single-molecule and single-particle imaging
In this thesis we investigated the ability of two-photon multifocal microscopy for single-molecule microscopy in live cells and organisms.
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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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PROPER: ‘Near-patient’ prostate cancer models for the assessment of disease prognosis and therapy
How to identify patients at risk of developing devastating, metastatic disease and facilitate the development of personalised treatment for prostate cancer patients?