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Expression, Renaturation and Functional Analysis of an Excitatory Insect-Specific Toxin from Scorpion Buthus martensii Karsch

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The cDNA of BmK IT-AP, an excitatory insect toxin from the scorpion Buthus martensi Karsch that has an analgesic effect on mammalian cells, was expressed in E. coli in the form of an inclusion body. Following denaturation and reduction, the recombinant protein was renatured and purified by liquid chromatography. The authenticity of the recombinant product was confirmed by bioassay and its electrophysiological effect on insect sodium channel.

Keywords: bmk it-ap; denaturation and renaturation; e. coli; recombinant expression

Document Type: Review Article


Affiliations: Center for Structural and Molecular Biology, Institute of Biophysics, Chinese Academy of Science, Beijing 100101, People's Republic of China;

Publication date: 2005-10-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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