Laminarin

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Laminarin
Beta-1,3-1,6-glucan.png
Identifiers
CAS number 9008-22-4 YesY
PubChem 439306
ChemSpider 388438 YesY
EC number 232-712-4
Jmol-3D images Image 1
Properties
Molecular formula (C6H10O5)x
Molar mass Variable
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
Infobox references

The molecule laminarin (also known as laminaran) is a storage glucan (a polysaccharide of glucose) found in brown algae. It is used as a carbohydrate food reserve in the same way that chrysolaminarin is used by phytoplankton, especially in diatoms.[1] It is created by photosynthesis and is made up of β(1→3)-glucan with β(1→6)-branches. It is a linear polysaccharide, with a β(1→3):β(1→6) ratio of 3:1.[2] Its hydrolysis is catalyzed by enzymes such as laminarinase (EC 3.2.1.6) that breaks the β(1→3) bonds.[3]

References[edit]

  1. ^ Beattie A, Hirst EL, Percival E (June 1961). "Studies on the metabolism of the Chrysophyceae". Biochem. J. (England) 79: 531–537. PMC 1205682. PMID 13688276. 
  2. ^ Nisizawa K, Yamaguchi T, Handa N, Maeda M, Yamazaki H (November 1963). "Chemical nature of a uronic acid-containing polysaccharide in the peritrophic membrane of the silkworm". Journal of Biochemistry (Japan: Oxford University Press for Japanese Biochemical Society) 54: 419–426. ISSN 0021-924X. PMID 14089735. 
  3. ^ Salyers AA, Palmer JK, Wilkins TD (May 1977). "Laminarinase (beta-glucanase) activity in Bacteroides from the human colon.". Appl Environ Microbiol. (England) 33 (5): 1118–1124. PMC 170836. PMID 879772.