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Chrysolaminarin

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Chrysolaminarin
Names
Other names Chrysolaminaran; Leucosin
Identifiers
CAS Number
ChemSpider
  • none
Properties
Chemical formula variable
Molar mass variable
Melting point 273 °C (523 °F; 546 K)
Solubility in water Soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). ☒N verify (what is  ?) Infobox references
Chemical compound

Chrysolaminarin is a linear polymer of β(1→3) and β(1→6) linked glucose units in a ratio of 11:1. It used to be known as leucosin.

Function

Chrysolaminarin is a storage polysaccharide typically found in photosynthetic heterokonts. It is used as a carbohydrate food reserve by phytoplankton such as Bacillariophyta (similar to the use of laminarin by brown algae).

Chrysolaminarin is stored inside the cells of these organisms dissolved in water and encapsuled in vacuoles whose refractive index increases with chrysolaminarin content. In addition, heterokont algae use oil as a storage compound. Besides energy reserve, oil helps the algae to control their buoyancy.

Chrysolaminarin is also the major storage polysaccharide of most haptophyte algae.

References

  1. ^ Beattie; Hirst, EL; Percival, E; et al. (1961). "Studies on the metabolism of the Chrysophyceae. Comparative structural investigations on leucosin (chrysolaminarin) separated from diatoms and laminarin from the brown algae". Biochem. J. 79 (3): 531–537. doi:10.1042/bj0790531. PMC 1205682. PMID 13688276.
  2. Basic definition of chrysolaminarin Archived 2016-03-04 at the Wayback Machine, Susquehanna University
  3. Biological use of chrysolaminarin Archived 1998-05-02 at archive.today, California State University, Stanislaus
  4. Pulz; Gross (2004). "Valuable products from biotechnology of microalgae". Applied Microbiology and Biotechnology. 65 (6): 635–48. doi:10.1007/s00253-004-1647-x. PMID 15300417. S2CID 42079864.
  5. Tsuji, Yoshinori; Yoshida, Masaki (2017). "Biology of Haptophytes: Complicated Cellular Processes Driving the Global Carbon Cycle". Advances in Botanical Research. Vol. 84. Elsevier. p. 219–261. doi:10.1016/bs.abr.2017.07.002. ISBN 978-0-12-802651-9.
  6. Penot, Mathias; Dacks, Joel B.; Read, Betsy; Dorrell, Richard G. (2022-12-31). "Genomic and meta-genomic insights into the functions, diversity and global distribution of haptophyte algae". Applied Phycology. 3 (1): 340–359. doi:10.1080/26388081.2022.2103732. ISSN 2638-8081.
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