[ccp4bb] use of beta-mercaptoethanol in crystallization

2011-03-15 Thread sreetama das
Dear all,     I have a 20 KDa protein that has a single cys residue , about 42 residues from the C-terminal . The protein aggregates during crystallization setup ( hanging drop vapour diffusion) . What ratio of protein and mercaptoethanol is to be used to avoid aggregation and help in

[ccp4bb] Fwd: [ccp4bb] use of beta-mercaptoethanol in crystallization

2011-03-15 Thread vandana kukshal
hi sreetama, if ur protein is making aggregates during crystallization try to add glycerol, EDTA in Ur buffer. R u purifying ur protein from Gelfiltration column ?is ur protein is coming in proper place? if every thing is right then u can try DTT and TCEP in ur buffer