%0 Journal Article
%T The Renaturation and Purification of RGD-Staphyloki nase by Gel Filtration<br>RGD-葡激酶的凝胶过滤层析法复性及其纯化
%A CHENG Ao
%A SONG Gang
%A SU Hua-Bo
%A YU Min
%A LI Yu-Yang
%A SONG Hou-Yan
%A <br>程鏖
%A 宋刚
%A 苏华波
%A 于敏
%A 李育阳
%A 宋后燕
%J 生物工程学报
%D 2002
%I 
%X A recombinant RGD-Staphylokinase(RGD-Sak) with thrombolytic and anti-thrombolytic bifunction was expressed in E.coli. The expression product accumulates as inclusion bodies. In order to obtain active molecule, the RGD-Sak in the inclusion body should be denatured and then renatured. The renaturation of RGD-Sak was performed by gel filtration. Comparing with the traditional way of dilution renaturation, gel filtration way is better than the traditional one, since there are some advantages, such as simple processing, high recovery, low cost and higher purity after renaturation. After renaturation, RGD-Sak was purified by Q-Sepharose FF, and the purity was more than 95%. Analysis of CD spectra showed that the final product from the two renaturation ways have similar CD spectra. It was demostrated that RGD-Sak molecules proceeded correct refolding through gel filtration or dilution renaturation process.
%K RGD-Staphylokinase
%K inclusion bodies
%K renaturation
%K CD spectra<br>葡激酶，
%K 包涵体，
%K 复性，
%K 圆二色谱(CD谱)
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A66E90C274451689E69F6F0291467824&aid=3913EE1DAF095796&yid=C3ACC247184A22C1&vid=13553B2D12F347E8&iid=B31275AF3241DB2D&sid=99A964928ADB4E67&eid=780091CB32840698&journal_id=1000-3061&journal_name=生物工程学报&referenced_num=3&reference_num=10