Re: [ccp4bb] Question about small molecule crystallography

2020-06-01 Thread Peat, Tom (Manufacturing, Parkville)
Hello Jiyuan, One small point to note- as Artem says, small molecule crystals are often generated out of solvents and these same solvents often melt the standard protein crystallisation plates, so be careful what you put into a plastic plate. As Artem mentioned, synchrotrons are generally

Re: [ccp4bb] Question about small molecule crystallography

2020-06-01 Thread Artem Evdokimov
Hi A small organic molecule is typically crystallized from organic solvents (or water, if soluble) by means of at least three main techniques: 1. slow evaporation of solvent leading to supersaturation and eventual crystallization 2. supersaturation at higher temperature followed by gradual drop

[ccp4bb] Question about small molecule crystallography

2020-06-01 Thread Jiyuan Ke
Hi Everyone, I want to crystallize a small organic molecule. I have very limited experience in small molecule crystallography. I found that the Crystal Screen HT from the Hampton research is good for both small molecule and macromolecule crystallization. Plan to set up a sitting drop screen just

Re: [ccp4bb] Completeness question

2020-06-01 Thread vincent Chaptal
Good evening, since I've been contacted off line several times about this, I'm posting here the protocol to combine maps with 2 mtz files of original and truncated data. I went through this procedure as I wanted to include the maps, and this was the tricky part of the procedure in my hands.

Re: [ccp4bb] Completeness question

2020-06-01 Thread Clemens Vonrhein
Dear all, On Sat, May 30, 2020 at 03:40:53PM +0100, Eleanor Dodson wrote: > My pennysworth. If you find your maps look better after the > anisotroy correction use it, but it may be helpful to those wo want to mine > your data if you deposit the whole sphere.. Agree (which is what e.g. we provide

Re: [ccp4bb] need help with background and over fitting in 2D classification

2020-06-01 Thread Schara Safarian
Hey Suchi, you could firstly increase the binning to factor to 4-5. Also, it would help to shrink the mask radius. Most definitely keep the resolution limited to 8-10 Å! Cheers Schara Dr. Schara Safarian Max Planck Institut für Biophysik Abteilung für Molekulare Membranbiologie Max Planck