Dear Sam,

if you want to add hydrogens on "riding" positions in the same way that
Refmac adds them, here is a command that aims to do exactly the same thing:

gemmi h 1cdw.pdb output.pdb

Otherwise, a program called reduce from MolProbity (distributed with both
Phenix and CCP4) is probably the most popular one for adding hydrogens. I
don't know if there are any newer and better programs than reduce as of
today.

Best,
Marcin


On Wed, 29 Sept 2021 at 13:04, Sam Tang <[email protected]> wrote:

> Dear community
>
> This may appear to be a silly question -- I am trying to add hydrogens to
> the structure in PDB 1CDW. My initial thought is to run a single run of
> refinement with a refinement program. It happens that I cannot locate the
> map coefficients under the entry (am I missing something?) So... is there
> an easy way to do what I want in this case?
>
> Warm regards
>
> Sam
>
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