Dear CCP4 gurus…
I am looking at the structure of a heme protein that has a single axial histidine ligand. To compare to published data I would like to measure the 'dihedral angle between the imidazole plane of the histidine and the nearest N(pyrrole)–Fe–N(pyrrole) axis'.
Could anyone advise me how to do this, either within Coot or another program?
Many thanks,
Mike
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