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タイトル: | The Crystal Structure of Zinc-Containing Ferredoxin from a Thermoacidophilic Archaeon (MOLECULAR BIOLOGY AND INFORMATION-Biopolymer Structure) |
著者: | Fujii, Tomomi Hata, Yasuo |
キーワード: | X-ray analysis Zinc Iron-sulfur cluster Thermostability |
発行日: | Mar-1999 |
出版者: | Institute for Chemical Research, Kyoto University |
誌名: | ICR Annual Report |
巻: | 5 |
開始ページ: | 48 |
終了ページ: | 49 |
抄録: | The crystal structure of ferredoxin from thermoacidophilic archaeon Sulfolobus sp. strain 7 was determined by X-ray diffraction analysis at 2.0 A resolution. The structure of the archaeal ferredoxin consists of two parts: core fold part and the N-terminal extension part. The distinct structural feature of this archaeal ferredoxin lies in the zinc-binding center where the zinc ion is tetrahedrally ligated by four amino acid residues. The zinc ion in the zinc-binding center is located at the interface between the core fold and the N-terminal extension, and connects the b-sheet in the N-terminal extension and the central b-sheet in the core fold through the zinc ligation. Thus the zinc ion plays an important role in stabilizing the structure of the present archaeal ferredoxin by connecting the N-terminal extension and the core fold, which may be common to thermoacidophilic archaeal ferredoxins. |
URI: | http://hdl.handle.net/2433/65184 |
出現コレクション: | Vol.5 (1998) |
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