Re: [ccp4bb] a dinosaur asks ... PDB format query

2024-05-15 Thread Paul Bond
It would also be good to check the monomer library (expanded with any user-supplied dictionaries). Cases where an element in columns 77-78 exists and it does not agree with the component definition should probably be flagged up. Cheers, Paul On Wed, 15 May 2024 at 12:39, Marcin Wojdyr wrote: >

Re: [ccp4bb] About model building

2023-11-04 Thread Paul Bond
What Oleg says is right. The phases may be too poor to Bootstrap from. Oleg also reminded me that the MR solution may be incorrect. I would check the following: What were the TFZ and LLK scores for the MR solution (if you used Phaser for MR)? What are the R-factors after molecular replacement?

Re: [ccp4bb] About model building

2023-11-04 Thread Paul Bond
Hi Sam, ARP/wARP should work well at 1.9A resolution. If it did not then there are things to check such as whether the space group is correct and whether there are major deviations in the Wilson plot. Do you have a suspected sequence for chain B? If so, I would provide that to the programs to

[ccp4bb] CCP4 Summer School 2023: extra places available

2023-07-11 Thread Paul Bond
career stage. The *application deadline has been extended to the 14th July* (this Friday). Application details can be found on the School website. https://www.ccp4.ac.uk/schools/ccp4-summer-school/application.php Many thanks, Johan Turkenburg, Jon Agirre and Pau

Re: [ccp4bb] anomalous data usage

2023-03-16 Thread Paul Bond
I believe there are many advantages to storing things *internally* as data objects with metadata instead of as columns of an MTZ file. How many students know what FP,SIGFP mean? And how many know that the FP,SIGFP columns in Refmac's HKLIN are not the same as the FP,SIGFP columns in HKLOUT? In an

Re: [ccp4bb] PDB to AlphaFold via Uniprot

2022-08-02 Thread Paul Bond
Hi Paul, You have probably solved this already, but in case you are interested I have written a script to superpose AlphaFold models using PDBe mmCIF annotations, AlphaFold DB and Gemmi (link below), as I had already done something similar in a previous project. It is probably better to use

Re: [ccp4bb] sftools

2022-04-05 Thread Paul Bond
Hi Eleanor, This is how you would do something similar in gemmi with ccp4-python: import gemmi mtz = gemmi.read_mtz_file("input.mtz") dataset = mtz.add_dataset("mydataset") dataset.crystal_name = "mycrystal" dataset.project_name = "myproject" dataset.wavelength = 1.44555 for column in

Re: [ccp4bb] CSYMMATCH for help

2022-03-18 Thread Paul Bond
The -origin-hand option is also useful for comparing molecular replacement solutions that may have different origins. I think the slides in Andrey Lebedev's presentation help to visualise this problem (specifically slides 49 & 50).

Re: [ccp4bb] Red trapezoids in Coot

2020-03-12 Thread Paul Bond
Hi Joël, You can go to Calculate -> Scripting -> Python and enter: set_draw_cis_peptide_markups(0) Kind regards, Paul On Thu, 12 Mar 2020 at 09:58, Joël Bloch wrote: > Hi Dave > > Thanks a lot for the hint. The Cis-bond should be correct, as it is a > buried glycine residue in a crystal