Dear Chittari Jaya Shree, I can't answer about python, but maybe you didn't know about the related feature that you can simply assign names to whatever you want. There is no need to use the ResProp tool if this is all going to be in a script anyway. For example, command: alias neutral :ile,val,leu,phe,cys,met,ala,gly,thr,ser,trp,tyr,pro,gln,asn ... will then let you use "neutral" in other commands, e.g. select neutral "alias" command <https://www.rbvi.ucsf.edu/chimera/docs/UsersGuide/midas/alias.html> I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco

On Apr 5, 2021, at 4:54 AM, Jayashree Chittari <jayashreechittari27@gmail.com> wrote:

Respected sir/ma'am

Greetings for the day! I want to make a new category named as neutral in which I would assign some amino acids to this category. So, in GUI we know that it could be done through tools-->structural analysis--> ResProp.

My question is how to do the similar process in python, like how to assign certain amino acids to a new category and then perform the selection("select neutral")?

Here is the attached ss of Residue category definition. I want to use this process in python where the new category contains assigned amino acids.

Kindly help me in this issue, it would be very grateful if you suggest the code. thank you,

Regards Chittari Jaya Shree

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