Hello all, For any given structure in the PDB, I want to identify all the Histidine ND1 atoms. I then want to consider these atoms in pairs, measure the distance in Angstroms between the ND1 atoms in each pair, and compile these distances (along with residue numbers of the pair) in a table. I then want to repeat this procedure for each unique structure in the PDB and generate a table containing all occurrences of HisND1 pairs with their corresponding separation distance. 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. Does anyone have any suggestions for any tools I might be able to use to perform this search?
Thanks in advance, C
