[phenixbb] question on the missing fobs filled maps

[fn1 at rice.edu]

Thank you so much!

The dataset with 81% completeness doesn't have NCS. I'll try to see.

Fengyun

引用 "Thomas C. Terwilliger" <terwilliger at lanl.gov>：

> Hi Fengyun,
>
> The one with 81% completeness is likely to be fine, but do compare results
> with the unfilled map. The one with 45% completeness is going to be very
> difficult for model-building...unless your starting model is almost
> correct to start with.
>
> I would recommend trying in both cases: instead of using these maps, use
> density-modified maps which can replace this model information with
> information based on solvent flattening or (better yet, if you have NCS),
> ncs averaging.
>
> You can do this with
>
> phenix.autobuild data=data.mtz model=coords.pdb \
>    maps_only=True seq_file=seq.dat resolve_command_list=" 'fill' "
>
> which will fill in missing reflections with information from the density
> modification process.
>
> All the best,
> Tom T
>
>>> Hi all,
>>>
>>> I have two datasets, one of which the completeness is only about 81%,
>>> the other one is even lower, about 45%.
>>>
>>> The resulting "missing fobs filled map" is much better than the
>>> unfilled map in the loop region. I read one file of Pavel on the fact
>>> of maps, the concern of using missing fobs filled map is that the risk
>>> of the mdoel bias.
>>>
>>> My question is that could the missing fobs filled map be used for the
>>> model building?
>>>
>>> Thanks!
>>> Fengyun
>>>
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>>>
>
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