Abstract
Using the catechol Tiron as an O(-·)2 scavenger, we showed that sea sponges (Sycon sp.) produce superoxide radicals in sea water at a high rate without any stimuli added. The rate of O(-·)2 outflow from sponges to their water surroundings reaches a value of 0.5 nmol/min per sponge at pH 6.5. The generation of O(-·)2 was inhibited by Cu,Zn-superoxide dismutase, and restored by the addition of KCN. We also confirmed the abiotic production of O(-·)2 in sea water, detected earlier with a different method by Petasne and Zika [Nature 325 (1987) 516-518]. Copyright (C) 1998 Federation of European Biochemical Societies.
Original language | English |
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Pages (from-to) | 201-204 |
Number of pages | 4 |
Journal | FEBS Letters |
Volume | 434 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Aug 28 1998 |
Externally published | Yes |
Keywords
- Electron paramagnetic resonance
- Free radical
- Sea animal
- Sea water
- Sponge
- Superoxide
ASJC Scopus subject areas
- Biophysics
- Structural Biology
- Biochemistry
- Molecular Biology
- Genetics
- Cell Biology