[phenixbb] exclude atoms/regions in real space refinement
Pavel Afonine
pafonine at lbl.gov
Thu Jul 4 23:01:40 PDT 2019
Hi Filip,
no, this is not possible in phenix.real_space_refine at the moment. I
feel the pressure by having this sort of questions multiple times a
week, on and off list. So implementing this functionality is in my todo
list. I can't hint you about ETA given I'm booked all the way till
November, sorry.
A question I ask everyone who requests this feature: why you need to do
this and why cutting out a piece of model and a map in a box isn't
working to mimic this?
Cheers,
Pavel
On 7/4/19 17:15, Filip Van Petegem wrote:
> Dear Phenix users,
>
> I want to exclude particular regions of a protein model, docked into a
> cryo-EM map, from real-space refinement. I know this is possible for
> refinement in reciprocal space, but is this possible for refining a
> cryo-EM structure against a map? E.g. I want to totally exclude a
> region with known crystal structure, placed in an area of poor local
> resolution, from any form of refinement, but want to apply all other
> options (morphing, simulated annealing, adp, Global minimization) to
> the remainder of the structure.
>
> (I didn't see this option in
> https://www.phenix-online.org/documentation/reference/real_space_refine.html )
>
> best regards,
>
> Filip
>
>
> --
> Filip Van Petegem, PhD
> Professor, Dept. of Biochemistry and Molecular Biology
> The University of British Columbia
> 2350 Health Sciences Mall - Rm 2.356
> Vancouver, V6T 1Z3
>
> phone: +1 604 827 4267
> email: filip.vanpetegem at gmail.com <mailto:filip.vanpetegem at gmail.com>
> http://crg.ubc.ca/VanPetegem/
>
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