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CHEMICAL REACTION RATES OF AMINO ACIDS WITH SINGLET OXYGEN
Abstract
Abstract— The chemical reactions of amino acids with singlet oxygen have been measured in D 2 O solution where the singlet oxygen was generated directly by irradiation of the oxygen 3∑g‐→1 δ g+ lv electronic transaction with the 1.06 μm output of an Nd‐Yag laser. Chemical reaction was measured as amino acid loss by an amino acid analyzer or by fluorescence in the cases of tryptophan and tyrosine. The chemical rate constants, in units of 10 7M‐1 s‐1, are histidine 10, tryptophan 3, methionine 1.7, tyrosine 0.8 and alanine 0.2, In the cases of histidine, methionine and alanine the interaction appears to be entirely chemical, i.e. there is no evidence for physical quenching in addition to the chemical reaction. The histidine chemical reaction rate constant shows an increase with pD with a p K of 6.9.
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Cited by
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Moore, D. E. (2002) · Drug Safety · doi:10.2165/00002018-200225050-00004 · Cited by 335
Creed, D. (1984) · Photochemistry and Photobiology · doi:10.1111/j.1751-1097.1984.tb03891.x · Cited by 295
REACTIVITY OF SINGLET OXYGEN TOWARD AMINO ACIDS AND PEPTIDES
Michaeli, A., & Feitelson, J. (1994) · Photochemistry and Photobiology · doi:10.1111/j.1751-1097.1994.tb05035.x · Cited by 286
Activity of thiols as singlet molecular oxygen quenchers
Devasagayam, T. P. A., Sundquist, A. R., Di Mascio, P., Kaiser, S., & Sies, H. (1991) · Journal of Photochemistry and Photobiology B: Biology · doi:10.1016/1011-1344(91)80008-6 · Cited by 175
Müller, M., Gräbnitz, F., Barandun, N., Shen, Y., Wendt, F., Steiner, S. N., Severin, Y., Vetterli, S. U., Mondal, M., Prudent, J. R., et al. (2021) · Nature Communications · doi:10.1038/s41467-021-27280-x · Cited by 101
Metadata
- Authors
- Matheson, I. B. C., & Lee, J.
- Venue
- Photochemistry and Photobiology
- Publisher
- Wiley
- Published
- 1979-05
- Volume
- 29
- Issue
- 5
- Pages
- 879-881
- ISSN
- 0031-8655 (ISSN-L)
- 1751-1097
- OpenAlex
- W2078624370
- Cited by
- 166
- References
- 0
- FWCI
- 7.37
- Type
- journal article
- Language
- en
- Open access
- closed
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- Matheson, I. B. C., & Lee, J. (1979). CHEMICAL REACTION RATES OF AMINO ACIDS WITH SINGLET OXYGEN. Photochemistry and Photobiology. https://doi.org/10.1111/j.1751-1097.1979.tb07786.x
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