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Gene Synthesis, Expression, and Mutagenesis of Zucchini Mavicyanin: The Fourth Ligand of Blue Copper Center Is Gln.
http://hdl.handle.net/2297/1733
http://hdl.handle.net/2297/1733c1c09498-af4a-48f2-8fa8-d25b8268e8ee
名前 / ファイル | ライセンス | アクション |
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SC-PR-KATAOKA-K-BO-Mav-BBRC.pdf (679.2 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Gene Synthesis, Expression, and Mutagenesis of Zucchini Mavicyanin: The Fourth Ligand of Blue Copper Center Is Gln. | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
片岡, 邦重
× 片岡, 邦重× Nakai, Masami× Yamaguchi, Kazuya× Suzuki, Shinnichiro |
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書誌情報 |
Biochemical and Biophysical Research Communications 巻 250, 号 2, p. 409-413, 発行日 1998-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0006-291X | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1006/bbrc.1998.9310 | |||||
出版者 | ||||||
出版者 | Elsevier | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The gene coding for the 109-amino-acid, non-glycosylated form of mavicyanin was synthesized and expressed inEscherichia coli.The recombinant protein refolded fromE. coliinclusion bodies was purified and characterized. Its spectroscopic properties are fully identical to those of mavicyanin isolated from zucchini, even in the absence of its carbohydrate moiety. The blue cooper center of mavicyanin strongly binds three ligands (2His and Cys) as well as many blue copper proteins. To disclose the fourth ligand of mavicyanin, Met was substituted for Gln95 by site-directed mutagenesis. The replacement changes from a rhombic EPR signal to an axial one and exhibits the quite similar absorption and CD spectra to those of plastocyanin. The midpoint potential of Gln95→Met mavicyanin shows the positive shift of 187 mV compared with the recombinant protein, being close to the values of plastocyanins. The differences of the spectroscopic and electrochemical properties between mavicyanin and its mutant demonstrate that the fourth ligand of mavicyanin is Gln95. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |