In pymol, the equivalent command is:
get_dihedral atom1, atom2, atom3, atom4
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From: CCP4 bulletin board [[log in to unmask]] on behalf of Tristan Croll [[log in to unmask]]
Sent: Thursday, August 13, 2015 12:57 AM
To: [log in to unmask]
Subject: Re: [ccp4bb] measurement of a dihedral angle in a heme protein
VMD has a nice generalised command for measuring the dihedral angle of any arbitrary set of four atoms:
measure dihed "index1 index2 index3 index4"
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From: CCP4 bulletin board <[log in to unmask]> on behalf of Hough, Mike <[log in to unmask]>
Sent: Thursday, 13 August 2015 5:47 PM
To: [log in to unmask]
Subject: [ccp4bb] measurement of a dihedral angle in a heme protein
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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