Since Sacha is having trouble posting directly the list I will
forward his latest message since It addresses my second set of
questions:
Begin forwarded message:
> From: Alexandre OURJOUMTSEV <[log in to unmask]>
>
> Thank you, Richard, for your questions !
>
> Unfortunately, I failed to pass my mail to the CCP4bb - I
> discovered that I changed my e-mail address and completely forgot
> to update my CCP4 subscription ! I asked Pavel Afonine re-send my
> mail from his address.
>
> Coming to your last questions :
>
> - yes, eventually the sharper the map signal, the larger amount of
> low-resolution 'long and low' waves you can take off keeping yet
> the signal in the map; however, I do not have particular numbers .
>
> - yes, in the 1991-year paper there is an example how low-
> resolution data can be restored from the higher-resolution ones
> (but still having experimental data is much better that go to a
> risky business of data recovering)
>
> - I am not completely sure if the strongest data are always the
> lowest resolution one; I think due to the bulk-solvent contribution
> this is not always the case (I recall the paper by Phillips, 1980 -
> I think at his plot <Fobs> goes down near the origin).
>
> - yes, having the magnitudes for the whole CONTINUOUS Fourier
> transform (that means NOT from a crystal but from an aperiodic
> object) allows one (in theory) to recover unambiguously the phases,
> that people like Millane, Saxton et all try to do.
>
> I hope this helps.
>
> Be well !
>
> Sacha
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