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This is the model for 2-site very-slow exchange model for time scales within range of microsecond to second time scale, where pApB, and named after Tollinger et al. (2001). This model is labelled as TSMFK01 in relax. A particularly interesting feature of the dispersion curves is the damped oscillations, which occur at low CPMG field strengths, and is solely a function of the chemical shift difference between the two sites (i.e., independent of the rate of exchange).


The TSMFK01 model has the parameters {R2A0, ..., Δω, kAB}.


The reference for the TSMFK01 model is:

  • Tollinger, M., Skrynnikov, N. R., Mulder, F. A. A., Forman-Kay, J. D., and Kay, L. E. (2001). Slow dynamics in folded and unfolded states of an sh3 domain. J. Am. Chem. Soc., 123(46), 11341-11352. (DOI: 10.1021/ja011300z)


The implementation of the TSMFK01 model in relax can be seen in the:

See also