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  • Title: [Purification and characterization of recombinant human interleukin 11 which expressed by Pichia pastoris].
    Author: Huang YS, Dong Y, Li H, Wang TY, Qiu JW, Yu YN.
    Journal: Sheng Wu Gong Cheng Xue Bao; 2001 May; 17(3):250-3. PubMed ID: 11517594.
    Abstract:
    This study first time report a method to purify the rhIL-11 which expressed by Pichia pastoris. rhIL-11 was secreted into the supernatant and collected by centrifugation. The purity of rhIL-11 reached 97% through the steps of ultrafiltration, SP Sepharose FF, Phenyl Sepharose HP and Sephadex G25. Analysis of SDS-PAGE, Western-blotting, IEF, RP-HPLC, Mass spectrometer, N and C terminus amino acid sequence and bioactivity was conducted. All the analysis results proved that the rhIL-11 expressed by Pichia pastoris was the same as Neumeg which was expressed in E. coli with fusion expression system. So it is possibly a cheaper and easier method to produce rhIL-11 for clinical use.
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