Premium
13 2 ,17 3 ‐Cyclopheophorbide b enol as a catabolite of chlorophyll b in phycophagy by protists
Author(s) -
Kashiyama Yuichiro,
Yokoyama Akiko,
Shiratori Takashi,
Inouye Isao,
Kinoshita Yusuke,
Mizoguchi Tadashi,
Tamiaki Hitoshi
Publication year - 2013
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2013.06.036
Subject(s) - catabolite repression , chlorophyll b , chlorophyll , chlorophyll a , algae , botany , chemistry , phototoxicity , biology , biochemistry , mutant , in vitro , gene
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.