Laboratoire de chimie biophysique des macromolécules
Laboratoire
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Epigenetic mechanisms silence the HM mating-type loci in budding yeast. These loci are tightly linked to telomeres, which are also repressed and held together in clusters at the nuclear periphery, much like mammalian heterochromatin. Yeast telomere anchori ...
Ligand-gated ion channels of the Cys loop family are receptors for small amine-contg. neurotransmitters. Charged amino acids are strongly conserved in the ligand-binding domain of these receptor proteins. To investigate the role of particular residues in l ...
Multiprotein bridging factor (MBF-1) is a cofactor that was first described for its capacity to modulate the activity of fushi tarazu factor 1, a nuclear receptor originally implicated in Drosophila development. Recently, it has been shown that human MBF-1 ...
The Nedd8 ubiquitin-like protein modification pathway regulates cell-cycle progression. Our analysis of Nedd8 requirements during Caenorhabditis elegans embryogenesis indicates that the cytoskeleton is another target. Nedd8 conjugation negatively regulated ...
gamma-Tubulin-containing complexes are thought to nucleate and anchor centrosomal microtubules (MTs). Surprisingly, a recent study (Strome, S., J. Powers, M. Dunn, K. Reese, C.J. Malone, J. White, G. Seydoux, and W. Saxton. Mol. Biol. Cell. 12:1751-1764) s ...
Sequential stages in the life cycle of the ionotropic 5-HT3 receptor (5-HT3R) were resolved temporally and spatially in live cells by multicolor fluorescence confocal microscopy. The insertion of the enhanced cyan fluorescent protein into the large intrace ...
Chem. and biol. labeling is fundamental for the elucidation of the function of proteins within biochem. cellular networks. In particular, fluorescent probes allow detection of mol. interactions, mobility and conformational changes of proteins in live cells ...
The mechanisms that ensure centrosome duplication are poorly understood. In Caenorhabditis elegans, ZYG-1, SAS-4, SAS-5 and SPD-2 are required for centriole formation. However, it is unclear whether these proteins have functional homologues in other organi ...
In this thesis, two different fluorescent labeling techniques for in vivo investigations on the 5-HT3 receptor (5-HT3R) functions are presented. This plasma membrane protein contains five subunits surrounding an ion channel that opens after binding of a 5- ...
Hormone binding nuclear receptors are transcription factors that activate gene transcription by binding to specific DNA sequences in the gene promoter region and then recruiting the necessary coactivator proteins for transcriptional activation. The knowled ...
