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Rui Yamaguchi
Department Kumamoto Health Science University Department of Medical Technology, Faculty of Health Science Kumamoto Health Science University Graduate School Division of Health Sciences, Graduate School of Health Sciences Position Associate Professor |
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| Language | English |
| Publication Date | 2010/05 |
| Type | |
| Peer Review | Peer reviewed |
| Title | High solubility supports efficient refolding of thermally unfolded beta-lactamase. |
| Contribution Type | |
| Journal | Int J Biol Macromol. |
| Journal Type | Japan |
| Volume, Issue, Page | 47,pp.706-709 |
| Author and coauthor | Arakawa T, Tokunaga H, Yamaguchi R, Tokunaga M |
| Details | Fusion technology is widely used to enhance soluble expression of recombinant proteins. We have shown before that halophilic β-lactamase (BLA) is an ideal candidate as a fusion partner. Here we have examined its thermal unfolding and refolding as a function of salt concentration. The thermal stability significantly increased as the salt concentration was increased from 0.2 to 1.84 M. Conversely, while reversibility of thermal unfolding was high at least up to 0.65 M salt, it was largely lost at 1.84 M. This was due to aggregation of thermally unfolded BLA. The addition of 3M urea suppressed aggregation, which in turn resulted in restoration of reversible refolding of heat-denatured protein. |