Effect of inorganic sulfur and selenium on O2-uptake and aniline hydroxylation by dithiothreitol-iron complex in comparison with adrenodoxin and Se-adrenodoxin.
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The additional coordination of inorganic sulfur or selenium to ditiothreitol (DTT)-iron complex induced a dramatic change of iron spin state from g=4.4 (high) to g=2.0 (low). The average g-values of DTT-Fe-S (1.99) and DTT-Fe-Se (2.02) complexes were larger than those of native S-adrenodoxin (1.97) and Se-adrenodoxin (2.00). The ability of O2-uptake and activity of aniline hydroxylation increased in the order, DTT-Fe-Se>DTT-Fe-S>DTT-Fe complexes. In addition, the optimum pH regions for O3-uptake and aniline hydroxylation by the model complexes were approximately parallel with those for complex formation in these DTT-iron systems. On the other hand, the hydroxylation activity of reduced S-adrenodoxin (yield of p-aminophenol : 10.90% per 90 min.) was clearly larger than that of reduced Se-adrenodoxin (7.64%). The effect of DTT-Fe-S and DTT-Fe-Se complexes on the activity of aniline hydroxylation, was compared with that of adrenodoxin and its selenium derivative.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 24 (6), 1343-1348, 1976
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390001204172302976
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- NII論文ID
- 110003635140
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- NII書誌ID
- AA00602100
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- ISSN
- 13475223
- 00092363
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- PubMed
- 1035513
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可