Partha Chakrabarti wrote:
Hi,

Could someone point me to the best ways of building a non standard ligand?
I had PEG-400 in the cryo, and the density is about twice as long as the "PEG"
that is in the monomer library.

I can get the cif file for PEG-400 from prodrg (1PE). Just wondering what is
the best way to use it for importing molecule, real space fitting etc.

I would use:

Extensions -> Modelling -> Replace Residue -> DRG { or whatever 3 letter code PRODRG gave you }

or

Modelling -> Superpose Ligands
and then
Calculate -> Merge Molecules

or even

{ Read in PEG-400 ligand pdb file }
Calculate -> Other Modelling Tools -> Right Here -> Find 'Em

{optionally click the "flexible" button for extra fun (and much less speed)}

Paul.

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