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Basic NMR - great book!

I have found a great book that explains NMR in so simple words, recommend it so much for students and people who wants to refresh basic in simple words. Everyone can understand NMR with this book! Pocket guide to biomolecular NMR Description from Google Books: Steering clear of quantum mechanics and product operators, "Pocket Guide to Biomolecular NMR" uses intuitive, concrete analogies to explain the theory required to understand NMR studies on the structure and dynamics of biological macromolecules. For example, instead of explaining nuclear spin with angular momentum equations or Hamiltonians, the books describes nuclei as "bells" in a choir, ringing at specific frequencies depending on the atom type and their surrounding electromagnetic environment.This simple bell analogy, which is employed throughout the book, has never been used to explain NMR and makes it surprisingly easy to learn complex, bewildering NMR concepts, such as dipole-dipole coup
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NMR - magnetic field vs. frequency; Hz vs. T

Can you recalculate Hz to Tesla? Not really. They are connected, but both have different dimensions, so can't equate them. 1Hz = 1 cycle/second - it is frequency, not magnetic field Magnetic field strength (B) is measured in Tesla (T). The larger the magnetic field, the faster the frequency. 1 GHz corresponds to 23.5 T 800 MHz corresponds to 18.8 T The Earth magnetic field is around 30-60 µT. Frequencies can be represented also in radians per second (rad/s). 2π rad/s = 1 Hz = 1 s -1 Nucleus frequency  depends on the electromagnetic environment: when nearby atoms strip away electrons (like electronegative O or N), then nucleus has higher frequency; so less electrons nearby, stronger the nucleus magnetic field, higher frequency. frequency of the atom = type of atom x magnetic field strength around the atom Larmor frequency- precession The frequency of the precession (Larmor frequency) depends on the gyromagnetic ratio and gyromagnetic ratio units are Hz/T, as

Secondary structure - Chimera; adding Hydrogens

If you have a pdb file without secondary structure written at the beginning, you can simply chceck it in Chimera. Go to Tools - Sequence - Sequence. Chimera is also better for me when I need hydrogens (command: addh). The reason is that PyMOL is numbering it differently, which is not readable for Relax.