EPR Access to 9.43 GHz (X-Band, ElexSys E500) and 94 GHz (W-Band, ElexSys E600) instruments.
Access to low-resolution instrument operating between 0.01 and 42.6 MHz, designed to measure the field dependence of the NMR longitudinal spin-lattice relaxation time. Technical specification: 1H Frequency range 0.01-42.6 MHz
This facility is specifically dedicated to the production of mammalian cell samples overexpressing a protein of interest for characterization by in-cell NMR. It relies on transient transfection in HEK293T adherent cells. The gene of interest is cloned in a vector optimized for high constitutive cytoplasmic expression. Small scale transfections are performed to determine the expression level and to assess the feasibility of in-cell NMR. Cell samples for NMR are produced in T75 flasks. Different protein labelling strategies are possible, e.g. U-15N labelling; amino acid type-selective 13C,15N labelling. Co-expression of two or more proteins is possible. In-cell NMR experiments are performed at the Solution NMR Facility at CERM.
Multi Angle/Dynamic Light Scattering MALS-RI-QELS on lineMeasurements can be performed with SEC separation column (HPLC) or in on batch mode.
Solid-state NMR methods have the unique capability of providing detailed structural constraints for amyloid fibrils for the development of full molecular models, conformational dynamics, and fibrils assembly pathways at an atomic level. Solid-state NMR has been applied to structurally investigate disease-related problems, such as fibrils associated with Alzheimer's disease, prion fibrils, and related systems. Solid-state NMR techniques have been applied and are available at the infrastructure for the determination of fibril structures. Detailed structural studies can be accomplished by exploitation of the effect induced by the presence of paramagnetic metal ions. When applicable, crystallization can take advantage of the robotic system.
CERM/CIRMMP offers unique research capabilities in the field of solution NMR of biomolecules providing state of the art instrumentation and expertise to perform, at the highest level, the most comprehensive array of experiments needed for the structure and dynamic characterization of biological macromolecules and their complexes in solution. To attain fundamental molecular level information on cellular processes, all the standard pulse sequences for spectroscopic, structural and dynamical characterization are available. We develop tailored pulse sequences for structural determination of high molecular weight proteins and paramagnetic systems, 13C direct detection protocols for “protonless” NMR experiments, fast in-cell NMR experiments.