[ccp4bb] protein domain for crystalization contact

[Acoot Brett]

Dear All,
 
After series of trial and even with the truncated forms, I find my protein has 
the difficulty to contact to form the crystallization, or lacking the 
nucleation center in the purified protein.
 
Will you please introduce the domains with witch my protein fused, there will 
be more contact points for the crystallization formation, besides the 
traditionally known Fab fragment?
 
Cheers,
 
Acoot