Re: [ccp4bb] Validation of structure prediction

2021-12-22 Thread Mukesh Kumar
Hi, try SAVES online tool,and ProSa. On Mon, 20 Dec, 2021, 9:40 pm Reza Khayat, wrote: > ​Hi, > > > Can anyone suggest how to validate a predicted structure? Something > similar to wwPDB validation without the need for refinement statistics. I > realize this is a strange question given that the

Re: [ccp4bb] Strange cysteines

2021-12-22 Thread Lior Almagor
Hi Boaz, I know that in some zinc-finger domains the zincs are coordinated by two cysteins. The affinity of those is usually very high so they could be there even if weren’t added in your buffers. Cheers, Lior --- Lior Almagor, PhD Weis Lab Department of Structural Biology Stanford

[ccp4bb] Carbohydrate Remediation Paper Published in Glycobiology

2021-12-22 Thread Jasmine Young
Dear all, Carbohydrate molecules present in more than 14,000 PDB structures were reviewed and remediated to conform to a new standardized format to facilitate broader usage of the resource by the glycoscience community and researchers studying glycoproteins.    Modernized uniform

[ccp4bb] Biocurator Milestone: >10,000 Depositions Processed

2021-12-22 Thread Jasmine Young
Congratulations to the wwPDB biocurator Dr. Brian Hudson on processing over 10,000 PDB depositions! Dr. Hudson received his PhD in Chemistry from the California Institute of Technology and has an expertise in X-ray crystallography and cryo-electron microscopy. He has joined PDB in 2010 and

Re: [ccp4bb] AW: Strange cysteines

2021-12-22 Thread Roger Rowlett
Another possibility to model is a couple of S-hydroxy cysteines. We've seen that in a Cys-amidase where there was artifactual oxidation damage to the protein during storage or RT crystallization. Roger Rowlett On Wed, Dec 22, 2021, 8:00 AM Andrew Purkiss wrote: > As you say, the Cys are too

Re: [ccp4bb] AW: Strange cysteines

2021-12-22 Thread Andrew Purkiss
As you say, the Cys are too far apart for it to be a disulphide and it looks like oxidation of the Cys. This could be due to radiation damage, but other causes are possible. A former colleague had one in betaB1-crystallin, which is visible in pdbcode 1OKI at position 38. The difference density

Re: [ccp4bb] Registration for CCP4 Study Weekend 2022 - IN-PERSON EVENT CANCELLED AND MOVING ONLINE

2021-12-22 Thread Karen McIntyre - STFC UKRI
Unfortunately, we have decided to cancel the in-person CCP4 Study Weekend and instead are pivoting the event to be fully virtual. All delegates previously registered for the in-person event have been moved across to the virtual event and refunds for any monies paid will be coming. For anyone

[ccp4bb] AW: Strange cysteines

2021-12-22 Thread Hochberg, Georg
Hi oliver, Thanks! Real space refinment was done in phenix with default settings. The position of these cysteines is quite constrained by where the main chain goes and the Phe you can see just next to the cysteine. To me it seems it would require very odd geometry to pull them into these

Re: [ccp4bb] Strange cysteines

2021-12-22 Thread Gerard Bricogne
Could it not just be classical radiation damage, that is known to love breaking SS bonds? If I understood correctly, single-particle cryo-EM inflicts much higher radiation doses than X-ray crystallography. Best wishes, Gerard. -- On Wed, Dec 22, 2021 at 09:51:59AM +, Weiergräber, Oliver H.