Dear CCP4 experts,
I would like to ask if there is a clear way to distinguish Na+ and HOH
molecules in the electron density map. The table I have suggests Na
to O distance lies between 2.35 and 2.45 that is very hard to discern
the difference of these two candidates. Na+ may have several
coordination though (5, 6).
This started from if where the divalent metal locates can be
substituted by water or sodium. I would appreciate any valuable
suggestions.
Best,
Young-Jin
|