
Hi, I have a question related to Fit in Map option and how to evaluate subsequently given results. I have a EM map at 19 ang. resolution of protein at yet non-characterised activity state, and there are two atomic structures of homologue of that protein, at clenched and open, active state. I would like to relate that state to one of the atomic structures, thus, both of them were fitted in my EM map and for the clenched state I got following values: cross correlation: 0.8447; average map value 9.526; and number of atoms outside the contour: 1709/7621 (or 22.42%) For the open state: cross correlation: 0.8385; average map value 9.085; and number of atoms outside the contour: 2064/8124 (or 25.42%) Are those differences big enough to say with certainty that my protein is at conformation similar to the clenched one or due to the EM map resolution this can not be said. Sincerely, Srdja Drakulic