Bruker announces world's first superconducting 1.1 gigahertz magnet for high-resolution NMR in structural biology

Bruker announces world's first superconducting 1.1 gigahertz magnet for high-resolution NMR in structural biology

Press releases may be edited for formatting or style | April 08, 2019 MRI

Professors Lucia Banci and Claudio Luchinat at the Magnetic Resonance Center and Department of Chemistry at the University of Florence in Italy are long-standing partners in Bruker's UHF project and are expected to receive the world's first high-resolution 1.2 GHz spectrometer. After performing experiments on the 1.1 GHz system, they stated: "We appreciate this important milestone in UHF NMR. The 1.1 GHz results we achieved at this new field strength with a 3 mm TCI CryoProbe are a spectacular step forward, as they enable us to study intrinsically disordered proteins in more detail at atomic resolution levels. The data we recorded at 1.1 GHz highlight the benefits of performing NMR experiments at ultra-high fields, and we look forward to the next step at 1.2 GHz."

"We are truly impressed with Bruker's UHF magnet technology, which we were able to test in conjunction with a 111 kHz magic-angle spinning (MAS) solid state NMR probe. The clearly improved sensitivity will be a key feature for biological and biomedical research, e.g. for protein complexes and Alzheimer-beta fibrils," commented Professor Beat Meier of the ETH Zürich, another future 1.2 GHz customer. Professor Matthias Ernst from ETH continued: "The sensitivity of this new instrument is impressive and will enable new applications in the area of proton-detected fast MAS experiments. The homogeneity of this new class of HTS-based magnets – which had been a concern in the community – is impeccable and meets our stringent requirements."


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Dr. Christian Griesinger, Director and Scientific Member at the Max Planck Institute for Biophysical Chemistry in Göttingen, Germany, observed: "In combination with the static X-ray structure, this 1.1 GHz data quantitatively explains the FRET (Förster resonance energy transfer) efficiency for the first time . This quantification is now a firm basis for developers of sensors to further optimize calcium-sensors which are essential to measure calcium concentrations in neurons with spatially resolved fluorescence and therefore a tool in neurobiology. We are looking forward to receiving our 1.2 GHz spectrometer, which we will use for our current projects on characterizing droplets and oligomers of intrinsically disordered proteins that are the key players in many diseases, such as neurodegeneration and cancer. These important disordered systems currently cannot be studied at Angstrom resolution with other methods in structural biology, such as X-ray crystallography or cryo-EM."

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