Re: [ccp4bb] Review: Linearity and Resolution in X-Ray Crystallography and Electron Microscopy

2024-10-10 Thread Frank von Delft
Well, I was reflecting on James's reminder of the huge precision gain from inclusion of restraints; that's formally an information gain, so should we not be casting that as "effective resolution" or some-such. But this is where you get to ignore me if I am in fact committing techno-waffle. F

Re: [ccp4bb] 16th Annual CCP4/APS Crystallographic School (2024) in the US

2024-10-10 Thread Xu, Qingping
A couple seats have become available. If you're in the U.S., particularly an existing APS user, and are interested in attending, please get in touch with us. Charles, Andrey, Garib and Qingping Subject: 16th Annual CCP4/APS Crystallographic School (2024) in the

Re: [ccp4bb] Review: Linearity and Resolution in X-Ray Crystallography and Electron Microscopy

2024-10-10 Thread Randy John Read
Dear Charles, Thanks for the kind words, and thanks for the links to your papers! I hadn’t run across them before — they look very interesting and relevant, but it will take a bit of time to digest them! Randy > On 9 Oct 2024, at 21:36, Sindelar, Charles wrote: > > Randy, what a beautiful pa

[ccp4bb] Gentle reminder: CCP4 Northern Structural Biology Meeting- Abstract Submission Closing Tomorrow!

2024-10-10 Thread Arnaud Basle
Dear all, Good news! We have some budget to sponsor up to £100 transport and 1 night hotel (Wednesday 6th November) for PhD students (not local to Newcastle/Durham) who give a talk/poster. Please note these bursaries are limited so will be awarded on a first-come-first-serve basis. PhD students

Re: [ccp4bb] Review: Linearity and Resolution in X-Ray Crystallography and Electron Microscopy

2024-10-10 Thread Randy John Read
Hi Frank, How are you proposing that this could be used? I like to think (from a Bayesian perspective) that if you’re handling the restraints properly (i.e. in a way where they reflect the prior probability of the model), then they automatically balance themselves with the data likelihood. If t

Re: [ccp4bb] Review: Linearity and Resolution in X-Ray Crystallography and Electron Microscopy

2024-10-10 Thread Randy John Read
Hi, Ian makes a good case that “resolution” already has a useful definition. I would hesitate to take any single number, including the half-bit-per-reflection criterion, as a measure of diffraction limit, because there’s useful information beyond that point especially crystals that diffract an