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Report No.

Dynamics of biomolecules studied by neutron inelastic scattering

Nakagawa, Hiroshi  ; Kataoka, Mikio

Protein is a biomolecule with a regular tertiary structure. The protein functions biologically by conformational change under the thermal fluctuation. Experimentally obtained neutron has a wavelength of a few angstrom and an energy of a few meV, which correspond to the distance between atoms in the molecule and an energy of the thermal fluctuation, respectively. Therefore, the neutron is useful for the determination of molecular structure by diffraction and the observation of functional protein dynamics and hydration water dynamics with pico-nano second time scale. J-PARC, new pulse neutron source at Tokai in Ibaraki, started operation. Here, we show our recent work about the dynamics of the biomolecule.



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