Re: [ccp4bb] crystal friendly solvents that are useful for dissolving hydrophobic small molecules?

2007-02-01 Thread David Briggs
I believe octanol (I don't know where the -ol has to be) has been used the same manner - i.e. saturate the octanol with ligand and overlay the drop. This was reported at the ccp4 study weekend on protein complexes (possibly by Annie Hassell at GSK???)- so more info can probably be found in Acta D

Re: [ccp4bb] crystal friendly solvents that are useful for dissolving hydrophobic small molecules?

2007-01-31 Thread Patrick Shaw Stewart
I've just remembered another approach that I've heard suggested, although I don't know anyone who has tried it. Dissolve plenty of the small molecule in paraffin or silicone oil, and use this mixture to cover the drop. This can be used with regular vapor diffusion or (probably better) micro

Re: [ccp4bb] crystal friendly solvents that are useful for dissolving hydrophobic small molecules?

2007-01-24 Thread Luis Mauricio Trambaioli da Rocha e Lima
Hi, I am used to have the same problem with hydrophobic ligands, in special due to the rupture of crystals solely by the solvent even in tiny amount. So, I decided to mix a suspension of the ligand with the crystallization drop (once assured I can distinguish the protein from ligand). In

Re: [ccp4bb] crystal friendly solvents that are useful for dissolving hydrophobic small molecules?

2007-01-24 Thread Ian Tickle
There's also NMP (N-methyl-2-pyrrolidone). -- Ian > -Original Message- > From: CCP4 bulletin board [mailto:[EMAIL PROTECTED] On > Behalf Of Green, Todd > Sent: 22 January 2007 20:40 > To: CCP4BB@JISCMAIL.AC.UK > Subject: [CCP4BB] crystal friendly solvents

Re: [ccp4bb] crystal friendly solvents that are useful for dissolving hydrophobic small molecules?

2007-01-24 Thread Patrick Loll
You can try DMI (1,3-dimethyl-2-imidazolidinone) as an alternative to DMSO. Also, sometimes you get lucky, and the small molecule is more soluble when high concentrations of glycerol are present, so you can do the soak in a cryo buffer... On Jan 22, 2007, at 3:40 PM, Green, Todd wrote: H