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Updated: Aug 20, 2026

15N CPMG Relaxation Dispersion for the Investigation of Protein Conformational Dynamics on the µs-ms Timescale
Published on: April 19, 2021
Relaxation to native conformation of a bond-fluctuating protein chain with hydrophobic and polar nodes
1George Mason University, MS 5C3, Fairfax, Virginia 22030-4444, USA.
Abstract:
The conformation and dynamics of a protein chain with hydrophobic and polar nodes are examined by the bond-fluctuation model using Monte Carlo simulations on a cubic lattice. The minimal (nearest neighbor) interaction leads to standard (self-avoiding walk) conformation, i.e., the scaling of the radius of gyration R(g) with the molecular weight N R(g) proportional, variant Ngamma with gamma approximately 3/5 . Specific interactions with longer range and higher strength are needed to approach the native globular conformations with gamma<3/5 . Relaxation into the globular ground state shows a weak power-law decay, i.e., R(g) proportional, variant t(-alpha) , alpha approximately 0.06-0.12 .
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