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Hirose S.,Japan National Institute of Advanced Industrial Science and Technology | Kawamura Y.,Japan Biological Informatics Consortium JBiC | Yokota K.,Japan National Institute of Advanced Industrial Science and Technology | Kuroita T.,Toyobo Co. | And 7 more authors.
Journal of Biochemistry | Year: 2011

Recombinant protein technology is an important tool in many industrial and pharmacological applications. Although the success rate of obtaining soluble proteins is relatively low, knowledge of protein expression/solubility under 'standard' conditions may increase the efficiency and reduce the cost of proteomics studies. In this study, we conducted a genome-scale experiment to assess the overexpression and the solubility of human full-length cDNA in an in vivo Escherichia coli expression system and a wheat germ cell-free expression system. We evaluated the influences of sequence and structural features on protein expression/solubility in each system and estimated a minimal set of features associated with them. A comparison of the feature sets related to protein expression/solubility in the in vivo Escherichia coli expression system revealed that the structural information was strongly associated with protein expression, rather than protein solubility. Moreover, a significant difference was found in the number of features associated with protein solubility in the two expression systems. © The Authors 2011. Published by Oxford University Press on behalf of the Japanese Biochemical Society. All rights reserved.


Patent
Reverse Proteomics Research Institute Co. and Astellas Pharma Inc. | Date: 2010-02-24

The present invention provides a method of suppressing the nonspecific interaction between molecules, characterized in that in a process to immobilize a molecule onto a solid phase carrier and analyze the specific interaction between the molecule and a molecule that specifically interacts with the molecule on the solid phase, the hydrophobic property of the solid phase surface in the solid phase carrier is regulated, particularly a hydrophilic spacer is interlaid at the time of immobilization of the molecule onto the solid phase carrier, which method makes it possible to suppress the nonspecific interaction between the molecules, and to reduce nonspecific adsorption to the solid phase.

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