On Tue, 2011-03-08 at 17:44 -0500, Cale Dakwar wrote: > Amongst other things, I want e.g. generate a histogram from this table > and determine e.g. the shortest HisND1 pair distance observed and the > structure in which this happens. For this specific question this can be useful http://www.biochem.ucl.ac.uk/bsm/sidechains/index.html -- "I'd jump in myself, if I weren't so good at whistling." Julian, King of Lemurs