Now showing items 1-4 of 4

  • Enzyme activity and dynamics: xylanase activity in the absence of fast anharmonic dynamics

    Dunn, Rachel V.; Reat, Valerie; Finney, John L.; Ferrand, Michel; Smith, Jeremy C.; Daniel, Roy M. (2000)
    The activity and dynamics of a simple, single subunit enzyme, the xylanase from Thermotoga maritima strain Fj SS3B.1 have been measured under similar conditions, from -70 to +10 °C. The internal motions of the enzyme, as ...
  • Enzyme activity below the dynamical transition at 220 K

    Daniel, Roy M.; Smith, Jeremy C.; Ferrand, Michel; Hery, Stephanie; Dunn, Rachel V.; Finney, John L. (1998-11)
    Enzyme activity requires the activation of anharmonic motions, such as jumps between potential energy wells. However, in general, the forms and time scales of the functionally important anharmonic dynamics coupled to motion ...
  • Nanosecond protein dynamics: First detection of a neutron incoherent spin−echo signal

    Bellissent-Funel, Marie-Claire; Daniel, Roy M.; Durand, Dominique; Ferrand, Michel; Finney, John L.; Pouget, Stephanie; Reat, Valerie; Smith, Jeremy C. (American Chemical Society, 1998)
    Motions in proteins occur over a wide range of time scales, from femtoseconds to seconds or longer.¹⁻³ Therefore, their characterization requires the application of a correspondingly wide range of experimental probes. Among ...
  • Solvent dependence of dynamic transitions in protein solutions

    Reat, Valerie; Dunn, Rachel V.; Ferrand, Michel; Finney, John L.; Daniel, Roy M.; Smith, Jeremy C. (2000)
    A transition as a function of increasing temperature from harmonic to anharmonic dynamics has been observed in globular proteins by using spectroscopic, scattering, and computer simulation techniques. We present here results ...