[Chimera-users] dipoles

Sagar, Vatsala (NIH/NEI) [F] vatsala.sagar at nih.gov
Fri Jan 6 07:09:57 PST 2017


Hi Tom,
I am attaching the PQR files and raw PDB files of the crystal structure of human gamma D with two monomers rotated 90 degrees to one another.  Please take a look at it and tell me what you think,
Thanks,
Vatsala
From: Tom Goddard <goddard at sonic.net<mailto:goddard at sonic.net>>
Date: Thursday, January 5, 2017 at 7:07 PM
To: "chimera-users at cgl.ucsf.edu<mailto:chimera-users at cgl.ucsf.edu> BB" <chimera-users at cgl.ucsf.edu<mailto:chimera-users at cgl.ucsf.edu>>, "Sagar, Vatsala (NIH/NEI) [F]" <vatsala.sagar at nih.gov<mailto:vatsala.sagar at nih.gov>>
Subject: Re: [Chimera-users] dipoles

Hi Vatsala,

  I guess you are refering to the dipole.py script on the Chimera Python scripts web page:

http://plato.cgl.ucsf.edu/trac/chimera/wiki/Scripts

Yes it should give the same answer for a molecule and a copy of that molecule rotated by 90 degrees.  Without have the structure and rotated PQR files I don’t know what is going wrong.

Tom


On Jan 4, 2017, at 11:17 AM, Sagar, Vatsala (NIH/NEI) [F]  wrote:

Hi,
Do you know if there is a method to calculate dipoles in Chimera?  I have generated a PQR structure in predicted protonation state and uploaded it onto Chimera.  I then used a downloaded app called dimer.py to calculate the dipole moments of two of the same monomers rotated 90degrees.  Technically they should both give the same dipole as the structures align 100% but according to the PDB coordinates are only rotated relative to one another.  The dipole.py scipt is calculating them as two different dipoles.  Can you help me with this?
Thanks,
Vatsala Sagar
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