13²,17³-Cyclopheophorbide b enol as a catabolite of chlorophyll b in phycophagy by protists.

Abstract

Both 13(2),17(3)-cyclopheophorbide a and b enols were produced along with ingestion of green microalgae containing chlorophylls a and b by a centrohelid protist (phycophagy). The results suggest that chlorophyll b as well as chlorophyll a were directly degraded to colored yet non-phototoxic catabolites in the protistan phycophagic process. Such a simple process by the predators makes a contrast to the much sophisticated chlorophyll degradation process of land plants and some algae, where phototoxicity of chlorophylls was cancelled through the multiple enzymatic steps resulting in colorless and non-phototoxic catabolites.

• Authors: Yuichiro Kashiyama, Akiko Yokoyama, Takashi Shiratori, Isao Inouye, Yusuke Kinoshita, Tadashi Mizoguchi, Hitoshi Tamiaki
• Journal: FEBS letters (FEBS Lett) Vol. 587 Issue 16 Pg. 2578-83 (Aug 19 2013) ISSN: 1873-3468 [Electronic] England
• PMID: 23831061 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2013 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

Chemical References

• 13(2),17(3)-cyclopheophorbide b enol
• Chlorophyll
• chlorophyll b
• Oxygen

Topics

• Chlorophyll (analogs & derivatives, chemistry)
• Chlorophyta (chemistry)
• Coculture Techniques
• Microalgae (chemistry)
• Models, Chemical
• Oxygen (metabolism)
• Seawater