Dear all,
I am depositing my first cryoEM structure and I am facing the following
problem concerning the contour level of the map.

Briefly, where do I find the value for the contour level to associate to
the uploaded map in Coot?

Long story: I worked with coot and I am happy with my map when I set the
contour level at 0.115 V = 5.5 rmsd (actually "happy" is not the best
definition, I feel quite uncomfortable with this "by feeling" assignment
but, to what I understood, this is how it works...).
Upon deposition, when I upload maps, a contour level is required but the
values from coot are not accepted, I have to provide the contour level
relative to the map value, like the one that you set in Chimera. Thus I
opened the map in Chimera and I set a contour level "by eye" but the
validation report revealed some problems: the total volume of the map is
too low and too many residues are highlighted as out of density. Probably I
should low the contour level but I don't want to go for a trial-and-error
approach, there must be a way to convert the contour level from coot (the
one that I used for modelling) in the one required for deposition!

Any advice?

Thank you,
Anna

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