Re: [ccp4bb] Question about GST cleavage

2011-04-01 Thread Alun R. Coker
Agitation can cause denaturation of proteins resulting in loss of activity, precipitation and even cross-beta "amyloid" fibre growth. Partial unfolding will probably make most proteins more protease sensitive. Alun. On 31/03/2011 20:41, gauri misra wrote: Just an offshoot of the same Questio

Re: [ccp4bb] Question about GST cleavage

2011-03-31 Thread Nian Huang
I once cleaved a GST tag on the resin using TEV by rocking overnight at 4 C. I would say it is 100% cutting judging from the gel. One thing to add is that the protein bound so tight to the beads that cutting tag is the only way to elute it except by SDS. I haven't had any trouble with TEV and throm

[ccp4bb] Question about GST cleavage

2011-03-31 Thread gauri misra
Just an offshoot of the same Question.. I would like to ask whether the same applies for GST-tag digestion using thrombin.. No agitation gives better results in the above case too... Any personal experiences On Thu, Mar 31, 2011 at 11:29 AM, Klaus Piontek < klaus.pion...@ocbc.uni-freiburg.de>