Motion synthetic model protein

Synthetic Model Protein Machines Emulate Energy Conversions of Photosynthesis, Respiration, and Motion... 

D11/Dj, from 1 to 10. Symbols correspond to synthetic experimental data generated assuming overall tumbling with rc = 5 ns and various degrees of anisotropy as indicated. Model-free parameters typical of restricted local backbone dynamics in protein core, S2=0.87, T oc =20 ps, were used to describe the effect of local motions. The H resonance frequency was set to 600 MHz. The solid lines correspond to the right-hand-side expression in Eq. (10). 

The correlation time p characterizes three-bond jumps, and the correlation time B characterizes other processes. Bendler and Yaris have also reconsidered the diamond lattice model, and replaced the discrete jump kinetic formulation by a continuum with adjustable cut-offs in the frequency spectrum. The high cut-off arises from the finite size of the smallest displaceable unit, and the low cut-off from the fact that chain displacements will be damped out as they travel down the chain. Librational motions, hitherto neglected, have been considered by Howarth, with success in interpreting relaxation data on proteins. It is possible that this factor should also be taken into account for synthetic polymers. 

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