Reactions of Radiolytically-generated Superoxide Anion with Higher Oxidation States of Lactoperoxidase

The time-courses of absorption changes after pulse radiolysis of oxygen-saturated solution of lactoperoxidase have been studied. Radiation-generated superoxide reduces compounds I to II. The results suggest that superoxide anion reacts also with compound II of lactoperoxidase; however, the reduction...

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Veröffentlicht in:	International journal of radiation biology 1993, Vol.63 (5), p.565-568
Hauptverfasser:	G bicka, L., G bicki, J.L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Anions Biological and medical sciences Cattle Fundamental and applied biological sciences. Psychology In Vitro Techniques Lactoperoxidase Molecular biophysics Oxygen Pulse Radiolysis Radiation-biomolecule interaction Radiochemistry Solutions Space life sciences Superoxides Time Factors
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Zusammenfassung:	The time-courses of absorption changes after pulse radiolysis of oxygen-saturated solution of lactoperoxidase have been studied. Radiation-generated superoxide reduces compounds I to II. The results suggest that superoxide anion reacts also with compound II of lactoperoxidase; however, the reduction of the heme iron has not been observed. A possible reaction pathway of compound II in the presence of superoxide anion is discussed.
ISSN:	0955-3002 1362-3095
DOI:	10.1080/09553009314450741