A glucan molecule is a polysaccharide of D-glucose monomers [MeshName|Glucans] linked by glycosidic bonds.

Many beta-glucans are medically important.


The following are glucans:
*cellulose, β-1,4-glucan
*Curdlan, β-1,3-glucan
*zymosan, β-1,3-glucan
*dextran, α-1,6-glucan
*glycogen, α-1,4- and α-1,6-glucan
*laminarin, β-1,3- and β-1,6-glucan
*lentinan, a strictly purified beta-1,6:beta-1,3-glucan from "Lentinus edodes"
*pleuran, β-1,3- and β-1,6-glucan isolated from "Pleurotus ostreatus"
*pullulan, α-1,4- and α-1,6-glucan
*starch, α-1,4- and α-1,6-glucan

(The α- and β- and numbers clarify the type of O-glycosidic bond.)


Properties of Glucans include resistance to oral acids/enzyme and water insolubility.


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Look at other dictionaries:

  • glucan transferase — glu·can trans·fer·ase (glooґkan transґfər ās) an enzyme transferring glucosyl chains in glucans from one site to another, usually with specific conformations of donor and acceptor sites; see oligo 1,4, 1,4 glucantransferase and 1,4… …   Medical dictionary

  • glucan — noun Date: 1941 a polysaccharide (as glycogen or cellulose) that is a polymer of glucose …   New Collegiate Dictionary

  • Glucan — Glucane Un glucane est un polysaccharide (polymère d oses) composé exclusivement de monomère de glucose. Ils peuvent être linéaires ou bien ramifiés. Sommaire 1 α glucanes 2 β glucanes 3 Notes et références …   Wikipédia en Français

  • glucan — noun Any polysaccharide that is a polymer of glucose …   Wiktionary

  • glucan — SYN: glucosan. * * * glu·can glü .kan, kən n a polysaccharide (as glycogen or cellulose) that is a polymer of glucose * * * glu·can (glooґkan) any polysaccharide (e.g., glycogen, starch, and cellulose) composed only of recurring units of glucose; …   Medical dictionary

  • Glucan — Glu|can 〈n. 11〉 verzweigtes Polymer der Glucose, z. B. Cellulose * * * Glu|can [↑ Gluc u. ↑ an (3)], das; s, e; veraltete Syn.: Glucosan, Polyglucosan: Gruppenbez. für aus linearen oder verzweigten D Glucose Ketten aufgebaute hochmol.… …   Universal-Lexikon

  • glucan — glu·can …   English syllables

  • glucan — ˈglüˌkan, kən noun ( s) Etymology: gluc + an (III) : a polysaccharide (as glycogen or cellulose) that is a polymer of glucose …   Useful english dictionary

  • Glucan-Hydrolase — Glu|can Hy|d|ro|la|se: svw. ↑ Glucanase …   Universal-Lexikon

  • glucan 14-α-glucosidase — glu·can 1,4 α glu·co·si·dase (glooґkan gloo koґsĭ dās) [EC] a lysosomal enzyme of the hydrolase class that catalyzes the cleavage of glucose residues from polyglucoside chains by hydrolyzing terminal α 1,4 or α… …   Medical dictionary

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