Hi all,

I measured Fe(II) edge EXAFS data for my protein that has two iron sites (Fe-Fe distance ~5A). My question is how to fit the model with the data? Can I discard the contribution of multiple scattering effects to the fitting? One most important information that I want to obtain is on the Fe-Fe distance. Is it enough to conclude from the raw data FT that the Fe-Fe  distance in my protein sample has been changed in comparison to the Fe-Fe distance in the model (created with Feff using the crystal structure coordinates)? I try fitting using arthemis but got bad and weird results. is there any manual or step-by step guide that I can learn how to fit model of two metal sites to my data?

Anther question that I have how can I get to the past discussions in the forum- is there any database for questions and answers that I can learn on the analysis of EXAFS data?

Any help will be appreciated,

MJacob