Re: [ccp4bb] Sv: [ccp4bb] Co crystalization with less soluble ligand.

2021-04-25 Thread Jon Cooper
I realised afterwards that this might be an experimental example of desperately trying to turn a negative result into a positive one, which is something that has been discussed here recently (sorry, Dale) ;-0 ;-0 Sent from ProtonMail mobile Original Message On 24 Apr 2021, 14:

Re: [ccp4bb] Sv: [ccp4bb] Co crystalization with less soluble ligand.

2021-04-25 Thread Amit Meir
Some ligands/ small molecules solubility is pH- dependent. (E.g. biotin, EDTA) Try adjusting the pH (it doesn't have to be accurate, just use a pH paper if you have very small volumes). It might help you out to improve ligand solubility (and binding with your protein). Also, not to ruin the party,

[ccp4bb] Postdoctoral position available at the National Cancer Institute, NIH in Bethesda, MD, USA

2021-04-25 Thread Xia, Di (NIH/NCI) [E]
Dear colleagues, The Section of Structural Biology of Membrane Proteins in the Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, NIH has an opening for Postdoctoral Fellow with a recent Ph.D. in Biology and training in cryo-EM and/or X-ray crystallography. This

Re: [ccp4bb] Co crystalization with less soluble ligand.

2021-04-25 Thread Bernhard Spingler
Dear Gourab, You might just want to add the ligand in pure, solid form to the edge of the crystallization drop. This worked in our case beautifully (see Angew. Chem. Int. Ed. 2012, 51, 3354). We had to soak it for 4 weeks. Good luck! Best regards Bernhard