Hello, I have two questions: (1) Does the total number of hydrogen bonds in a structure (or # of contacts <4A or # of salt bridges -- whatever is usually determined based on a threshold) depend on resolution? I would think that it is even in the best structure at 3 A because the side chains are determined from rotamers etc, there is more luzzati error and more errors because we do not see the side chains as clearly as at high res. Is there a systematic study published on this? I have not seen any. (2) Does packing density of a protein defined as Van der Waals volume over actual volume (Voronoi polyhedra) depend on resolution? I would think not. Does it depend on errors in structure? I would think again no. I would appreciate your opinions in these two questions and if you have any references. Thanks. Mike Colaneri _______________________________________________ o-info mailing list (moderated) o-info@o-info.bioxray.dk http://o-info.bioxray.dk/mailman/listinfo/o-info
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