Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2052173 | FEBS Letters | 2006 | 5 Pages |
Abstract
In the final stage of bacteriochlorophyll (BChl) biosynthesis, the presence of BChl-a molecules possessing dihydrogeranylgeranyl and tetrahydrogeranylgeranyl groups at the 17-propionate has been reported. However, the molecular structures of such BChls-a have not yet been determined in terms of the positions of CC double bonds in the 172-ester. In this study, we isolated significant amounts of such pure BChls-a from Rhodopseudomonas palustris and determined their structures by both mass spectrometry and 1H and 13C NMR spectroscopy. The determined structures enable us to discuss a stepwise reduction from a geranylgeranyl to phytyl substituent.
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Authors
Tadashi Mizoguchi, Jiro Harada, Hitoshi Tamiaki,