Re: [ccp4bb] Crystallization buffer pH optimization

2013-01-17 Thread Tim Gruene
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Dear Mike, I'd be surprised if the book was from Hampton: The pH-value of Hampton solutions refers to the stock solution of the buffer before setting up the final solution, and can differ a lot from your drop's pH - e.g. in the presence of Imidazole

Re: [ccp4bb] Crystallization buffer pH optimization

2013-01-17 Thread David Schuller
That may be the CALBIOCHEM Buffers Booklet, which is free online as a PDF. On 01/17/2013 12:38 AM, Mike John wrote: Hello, Shameful and sorry for asking this simple question, it looks like this when first starting a new setup in so-called structural biology. I remmeber a book of, probably,

[ccp4bb] Crystallization buffer pH optimization

2013-01-16 Thread Mike John
Hello, Shameful and sorry for asking this simple question, it looks like this when first starting a new setup in so-called structural biology. I remmeber a book of, probably, Hampton, in which there are tables of pH optimization for many buffers. For example for buffer TRIS, the table will

Re: [ccp4bb] Crystallization buffer pH optimization

2013-01-16 Thread jan
Hi Mike, check out the EZ screen builder from Emerald Bio, that is a really nice tool for this purpose: http://www.emeraldbiosystems.com/escreentoolkit/escreen.html Select your screen, your hit condition, then hit 'optimize' and you will have a screen that will vary the precipitant