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Updated: Aug 9, 2026
Purification and Aggregation of the Amyloid Precursor Protein Intracellular Domain
Published on: August 28, 2012
Functional solubilization of aggregation-prone TRAIL protein facilitated by coexpressing with protein isoaspartate
Hu Zhu1, Ruo-Jun Pan, Tian-Wen Wang
1State Key Laboratory of Bioreactor Engineering, New World Institute of Biotechnology, East China University of Science and Technology, Shanghai, 200237, PR China.
Abstract:
TRAIL was a tumor-specific protein in development as a novel anticancer therapeutic agent. Generally, when expressed in recombinant Escherichia coli, TRAIL protein was prone to form inclusion bodies. In this study, coexpression of human TRAIL protein and protein isoaspartate methyltranferase (PIMT) from E. coli on plasmid pBV-TRAIL-PCM in E. coli C600 was investigated to overcome the difficulties in soluble expression. The results showed that this PIMT coexpression strategy exerted a positive effect on the TRAIL protein expression in recombinant E. coli, which led to a mean increase in the intracellular concentration of soluble and total protein of TRAIL by 1.57-fold and 1.33-fold, respectively. At the same time, results also suggested that PIMT was a prospective partner for soluble expression of TRAIL protein.
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