Capacity of chlorophyll to generate toxic singlet oxygen is widely eliminated by protists feeding on algae through formation of an enol (cPPB-.alpha.E), a detoxified catabolite of chlorophyll a.
PNAS online Sept. 4, 2012, doi: 10.1073/pnas.1207347109
Japanese research team finds key mechanism of chlorophyll dextoxification in aquatic ecosystems