[ccp4bb] Substitute for Lithium Sulfate

[Yi-Liang Liu]

Hi Everyone,

I have a question about the crystallization condition. Currently the  
condition I use contains 0.2M lithium sulfate. However, the ligand  
there seems to compete the site where sulfate binds in the active  
site. Are there any good substitute to replace the Lithium sulfate in  
my crystallization buffer?

Best,

Lucas