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| Content Provider | Springer Nature Link |
|---|---|
| Author | Takaichi, S. Mochimaru, M. |
| Copyright Year | 2007 |
| Abstract | Cyanobacteria grow by photosynthesis, and necessarily contain chlorophyll and carotenoids, whose main functions are light harvesting and photoprotection. In this review, we discuss the carotenoids, carotenogenesis pathways, and characteristics of carotenogenesis enzymes and genes in some cyanobacteria, whose carotenogenesis enzymes have been functionally confirmed. In these cyanobacteria, various carotenoids have been identified, including the unique ketocarotenoids, echinenone and 4-ketomyxol; and the carotenoid glycosides, myxol glycosides and oscillol diglycosides. From these findings, certain carotenogenesis pathways can be proposed. The different compositions of carotenoids among these species might be due to the presence or absence of certain gene(s), or to different enzyme characteristics. For instance, two distinct β-carotene ketolases, CrtO and CrtW, are properly used in two pathways depending on the species. One β-carotene hydroxylase, CrtR, has been identified, and its substrate specificities vary across species. At present, functionally confirmed genes have been found in only a few species, and further studies are needed. |
| Starting Page | 2607 |
| Ending Page | 2619 |
| Page Count | 13 |
| File Format | |
| ISSN | 1420682X |
| Journal | Cellular and Molecular Life Sciences |
| Volume Number | 64 |
| Issue Number | 19 |
| e-ISSN | 14209071 |
| Language | English |
| Publisher | Birkhäuser-Verlag |
| Publisher Date | 2007-07-23 |
| Publisher Place | Basel |
| Access Restriction | Subscribed |
| Subject Keyword | Carotenogenesis carotenoid carotenoid glycoside cyanobacteria echinenone ketocarotenoid 4-ketomyxol myxol glycoside Cell Biology Biomedicine general Life Sciences Biochemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Molecular Biology Molecular Medicine Pharmacology Cellular and Molecular Neuroscience |
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