ケラチン加水分解物‐，ポリリジン‐，及びポリオルニチン‐金属イオンコンプレックスのＮＭＲによる解析
書誌事項
- タイトル別名
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- 13C NMR Studies of Keratin Hydrolysate-, Polylysine-, and Polyornithine-Metal Ion Complexes.
説明
The chemical structure of a keratin hydrolysate-Fe (II) ion complex, which is used as fire-extinguishing foam for petroleum fires, was studied by means of 13C NMR spectroscopy. Lower-field shift of three peaks in the 13C NMR spectrum of keratin hydroly-sate was observed after adding Fe (II) salt to keratin hydrolysate solution in deuterium oxide. It was assumed that the coordination of Fe (II) ion with the protein occurred at pendant amino groups of amino acid residues in the keratin hydrolysate. To analyze the structure of the protein-Fe (II) complex, poly-L-ornithine and poly-L-lysine were used as model polypeptides. Reaction of polyornithine with Fe (II) salt gave the peak broadening and lower-field shift in the 13C spectrum, suggesting that the coordination of Fe (II) ion to pendant amino groups of the protein might occur. The Cu (II) ion also formed a complex with poly-L-ornithine. Although no peak shift of poly-L-lysine was observed due to the addition of Fe (II) salt, the addition of Cu (II) salt to poly-L-lysine solution caused strong peak broadening at the two peaks (Cδ and Cε). These results show that polyornitine and polylysine have an ability to form metal ion complexes. They suggest that such amino acid residues as ornithine and lysine might form a Fe (II) complex in the keratin hydrolysate fire-extinguisher.
収録刊行物
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- 高分子論文集
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高分子論文集 48 (6), 341-346, 1991
公益社団法人 高分子学会
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詳細情報 詳細情報について
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- CRID
- 1390001206523173888
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- NII論文ID
- 130004034733
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- ISSN
- 18815685
- 03862186
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
