Assuming that your homology model is that of a dimer, you could put it in a 
large unit cell (just add CRYST1 record).  The only interface you will get from 
pisa will be your dimer interface.
If your homology model is a monomer, then pisa will not help, of course, and 
you would need to predict dimerization mode first. 


Happy Connecting. Sent from my Sprint Samsung Galaxy S® 5

-------- Original message --------
From: Careina Edgooms <000002531c126adf-dmarc-requ...@jiscmail.ac.uk> 
Date: 3/2/18  6:44 AM  (GMT-05:00) 
To: CCP4BB@JISCMAIL.AC.UK 
Subject: [ccp4bb] validating a homlology model 

Dear all
What programs are best used for validate homology models? I know of molprobity 
but if there are no coordinates I cannot use it. Is there a way to use such 
programs with homology models?
Also I wish to use pdbepisa for to charaterise dimer interface but again for 
homology model this cannot be done as there is no PDB model. Does anybody know 
way to use PISA software on my own model that is not deposited in PDB?
Thank you in advanceCareina

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