Light-independent isomerization of bacteriochlorophyll g to chlorophyll a catalyzed by weak acid in vitro
| Autor: | Tadashi Watanabe, Jan Amesz, Takehiro Hamano, Mayu Yamamura, Hirozo Oh-oka, Kazuhito Inoue, Hideo Kise, Masami Kobayashi, Machiko Akiyama |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
chemistry.chemical_classification
Photosynthetic reaction centre Chlorophyll a biology Electron acceptor Fast atom bombardment biology.organism_classification Photochemistry Biochemistry Analytical Chemistry chemistry.chemical_compound chemistry Chlorophyll Heliobacteria Environmental Chemistry Bacteriochlorophyll Isomerization Spectroscopy |
| Zdroj: | Analytica Chimica Acta. 365:199-203 |
| ISSN: | 0003-2670 |
| DOI: | 10.1016/s0003-2670(98)00088-9 |
| Popis: | Rapid conversion of bacteriochlorophyll g (BChl g) to chlorophyll a (Chl a) was observed in acetone on addition of acid in the dark. The product, Chl a esterified with farnesol (Chl aF), was identified by liquid chromatography and fast atom bombardment mass spectrometry. Acid-catalyzed formation of 81-OH-Chl aF, a primary electron acceptor in the heliobacterial reaction center, was also observed in diethyl ether in the dark. These results suggest that acid-catalyzed isomerization is a candidate for the chemical evolution of BChl g to the more stable Chl a and that 81-OH-Chl aF can easily be synthesized from BChl g under weakly acidic conditions in the dark. |
| Databáze: | OpenAIRE |
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