Re: [ccp4bb] Rwork and Rfree the same?

2024-02-28 Thread Rasmus Fogh
definition the 38% completeness figure refers to, and what the anisotropic diffraction limits are. Yours, Rasmus Fogh On 28/02/2024 17:58, Paul Adams wrote: By setting wxc (weight of the X-ray term) to 0.1 there is good chance that the refinement is dominated by the geometry term and the

Re: [ccp4bb] wwPDB news: Prototype of PDB NextGen Archive now available

2023-02-22 Thread Rasmus Fogh
Dear Marcin, It turns out that the wheels of PDB deposition have turned very slowly since I left the CCPN project. The agreement between the PDB, BioMagResBank and CCPN was as I have described, but I gather that it has since turned out that the PDB cannot accept NMR submissions as originally

Re: [ccp4bb] wwPDB news: Prototype of PDB NextGen Archive now available

2023-02-17 Thread Rasmus Fogh
Dear All, A side comment: The two parallel sets of chain, residue, and atom names are actually necessary for NMR structures - it is not just to keep the depositors happy. The reason is that PDB atom names reflect absolute stereochemistry. In NMR the absolute stereochemistry is not always kno

Re: [ccp4bb] am I doing this right?

2021-10-19 Thread Rasmus Fogh
Dear All, This is way over my head, but did Jaynes not say something about getting different results depending whether you assume both outcomes are possible? I think his example was that if you observe the sun rise for 100 days in a row, the probability that it will rise on day 101 is no grea

Re: [ccp4bb] Analysis of NMR ensembles

2021-05-27 Thread Rasmus Fogh
Dear Dale, It is more complex than just 'flexibility', but then it is always more complicated. Here are the main possibilities for undetermined regions: -1- fast, free movement - signals are easy to see, have 'random-coil' chemical shifts, often overlap, and there are no NOEs -2- intermedia

Re: [ccp4bb] Analysis of NMR ensembles

2021-05-26 Thread Rasmus Fogh
Hi, It has been a bit since I was in NMR, but I would propose CYRANGE (http://www.bpc.uni-frankfurt.de/cyrange.html), based on the recommendation of the PDB NMR Validation Task Force (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3884077/). You can do both superposition and per-residue RMSD a

Re: [ccp4bb] solving difficult protein structure

2021-04-27 Thread Rasmus Fogh
Hi Swati, I am very far from expert, but if you have anisotropic diffraction have you thought of bringing in Staraniso - public server at https://staraniso.globalphasing.org? That should help keeping reflections with higher I/sigma and rejecting those with mostly noise. Yours, Rasmus On 23/

Re: [ccp4bb] How many microfocus beamlines are in the world?

2020-06-27 Thread Rasmus Fogh
Dear All, The link http://biosync.rcsb.org/index.jsp looked very interesting, but a cursory look found the following line in a beamline description: "Next proposal submission period Mid 2013" Not 100% up to date, then. Yours, Rasmus On 25/06/2020 09:36, Andrew Leslie wrote: Dear Morpholino

Re: [ccp4bb] [g...@globalphasing.com: [ccp4bb] An error in the IUCr Online Dictionary of Crystallography] (fwd)

2020-03-11 Thread Rasmus Fogh
;. So, who knows how you are supposed to interpret that word in a BB message in 2020?? ;-) Rasmus Fogh On 11/03/2020 16:53, Eleanor Dodson wrote: Am I missing something? He? She? It? Are they now interchangeable? On Wed, 11 Mar 2020 at 16:15, Tim Gruene <mailto:tim.gru...@univie.ac.at>

Re: [ccp4bb] Macromolecular Crystallography workshop in South America 2020

2020-02-05 Thread Rasmus Fogh
n, but the scope for asking "more junior women" to teach these particular workshops - or in general for broadening the base of tutors - is limited by the fact that the pool of people with the qualifications and experience to teach such courses at a high level is truly tiny. Yours, Ra

Re: [ccp4bb] NMR HSQC or TROSY spectrum from PDB structure

2020-01-27 Thread Rasmus Fogh
Hi, It depends what you need to use it for. NH chemical shifts correlate with secondary structure and backbone torsion angles, up to a point, but the precise values are quite sensitive to small structural changes, particularly for NH protons. There are decent prediction programs, but a couple

Re: [ccp4bb] Remember the turkey?

2020-01-02 Thread Rasmus Fogh
A Newspeak, basically. Happy new year, Rasmus Fogh On 26/12/2019 18:46, Bernhard Rupp wrote: Hi Fellows - here some light Holiday entertainment (and puzzle) for you: Remember my thanksgiving posting below? Meant as a hoax or satire, it follows the classical pattern of throwing postmodern Criti

Re: [ccp4bb] Python3 and MTZ

2018-06-07 Thread Rasmus Fogh
Dear Kay, Plus there is one Python-3-only feature that is a really big help for any large and complex project: Type annotations lets you specify is a simple way the type of function parameters, both for documentation and so that your IDE can flag cases where you misuse the parameters. But of