Thiol peroxyl radical formation from the reaction of cysteine thiyl radical with molecular oxygen: an ESR investigation.
Thiol peroxyl radical formation from the reaction of cysteine thiyl radical with molecular oxygen: an ESR investigation.
复制标题
半胱氨酸硫基自由基与分子氧反应形成硫醇过氧自由基:ESR 研究。
DOI:
10.1016/s0006-291x(88)81100-8
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发表时间:
1988
影响因子:
3.1
通讯作者:
Becker,D
中科院分区:
文献类型:
--
作者:
Sevilla,MD;Yan,MY;Becker,D
Using Electron Spin Resonance (ESR) spectroscopy, we have identified the cysteine thiol peroxyl radical (CysSOO•) at low temperatures in two aqueous glasses. This radical shows a typical peroxyl radical ESR spectrum, but unlike carbon-based peroxyl radicals has a violet color (λmax= 540 nm) and forms a new radical showing a singlet ESR spectrum when photobleached with visible light. The cysteine peroxyl radical reacts to form the cysteine sulfinyl radical (CysSO•) in the glass which allows warming to 165K.17O isotopic substitution studies indicate dissolved molecular oxygen is the source of oxygen in CysSOO•. Anisotropic g-values and the parallel anisotropic17O hyperfine couplings for this radical are reported.
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DOI:
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发表时间:
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期刊:
Journal of The Chemical Society-perkin Transactions 1
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DOI:
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期刊:
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