Citation: Quan BAI, Yu KONG, Xin Du GENG. Studies on the Renaturation with Simultaneous Purification of Recombinant Human Proinsulin with Unit of Simultaneous Renaturation and Purification of Protein in Semi-preparative Scale[J]. Chinese Chemical Letters, ;2003, 14(8): 824-827. shu

Studies on the Renaturation with Simultaneous Purification of Recombinant Human Proinsulin with Unit of Simultaneous Renaturation and Purification of Protein in Semi-preparative Scale

Institute of Modern Separation Science, Kay Lab of Modern Separation Science in Shanxi Province, Northwest University, Xi'an 710069

Received Date: 27 August 2002

The renaturation and purification of recombinant human proinsulin (rh-proinsulin) expressed in E. Coli with the unit of simultaneous renaturation and purification of protein (USRPP) in semi-preparative scale was studied. The result shows that rh-proinsulin extracted with 8.0 mol/L urea can be renatured and purified simultaneously in 45 minutes with the USRPP (10×50 mm ID). The purity of rh-proinsulin was found to be more than 90% and the mass recovery to be more than 80%. The renaturation effect of rh-proinsulin with the USRPP was tested by enzyme cleavage for obtaining insulin. In addition, the result was further confirmed with RPLC, SDS-PAGE electrophoresis, and MALDI-TOF, respectively.
- Liquid chromatography,
- hydrophobic interaction chromatography,
- renaturation,
- preparation,
- recombinant human rh-proinsulin,
- biotechnology
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