Re: [ccp4bb] S-tagged protein purification

2007-05-12 Thread artem
Hello, This tag is very hard to release, as it forms an integral part of the RNAse A. It maybe released with 2M NaSCN but this often results in denaturation of the carrier protein. This is why the manufacturer strongly recommends having cleavage site(s) engineered in between the tag and the carrie

[ccp4bb] S-tagged protein purification

2007-05-12 Thread Y. -F. Li
Hi, I have a membrane protein with a C-terminal S-tag, and there is no cleavage site for the S-tag (novagen, e.g, thrombin, EK). I wonder whether I still can use this for purification without cleavage of the S-tag. Here are my questions: 1) How to release the protein bound to S-tag resin? I noti