Dear all, I’ve been tearing my hair out trying to figure out how to choose relaxation dispersion models for a particular protein. I’ve ran into a case where many residues are fit to the ‘IT99’ model, but did not fit to the ’NS CPMG 2-site expanded’ model (relax doesn’t even bother to show the Chi2 and AIC in the log file). If I understand correctly, the ’NS CPMG 2-site expanded’ model is an exact numerical solution based on the original Bloch-McConnell equations, whereas ‘IT99’ is an analytical approximation. I would expect that whatever can be fit with the ‘IT99’ model should also be able to fit to the ’NS CPMG 2-site expanded’ model since they seem to share the same restrictions (pA > pB). Or am I missing something?
Cheers, Chung-ke _______________________________________________ relax (http://www.nmr-relax.com) This is the relax-users mailing list relax-users@gna.org To unsubscribe from this list, get a password reminder, or change your subscription options, visit the list information page at https://mail.gna.org/listinfo/relax-users
