A linear 1,3-β-d-glucan formed by certain enzymes from UDP-glucose, differing from cellulose (a β-1,4-glucan formed from GDP-glucose) and starch amylose (an α-1,4-glucan formed from ADP-glucose). Found in certain plant cell walls.

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cal·lose 'kal-.ōs, -.ōz n a carbohydrate component of plant cell walls

Medical dictionary. 2011.

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  • CALLOSE — Polyglucoside formé, comme la cellulose, par la polymérisation du glucose, mais qui diffère de la cellulose par le type de liaison des monomères glucose entre eux. La callose est une substance insoluble dans l’eau, l’alcool, et dans la liqueur de …   Encyclopédie Universelle

  • Callose — is a plant polysaccharide. It is comprised of glucose residues linked together through b 1,3 linkages, and is termed a B glucan. It is thought to be manufactured at the cell wall by callose synthases and is degraded by b 1,3 glucanases. It is… …   Wikipedia

  • Callose — Cal lose, a. [See {Callous}.] (Bot.) Furnished with protuberant or hardened spots. [1913 Webster] …   The Collaborative International Dictionary of English

  • callose — [kal′ōs΄] n. [< L callosus, CALLOUS] a carbohydrate in plant cells that plugs the sieve pores when the sieve tubes stop functioning …   English World dictionary

  • Callose — Calloseablagerungen in Schwammparenchymzellen von Tabak Callose (auch Kallose) ist ein Polysaccharid, das pflanzlichen Zellen als universelles Abdichtungsmaterial in verschiedensten Situationen dient. Inhaltsverzeichnis …   Deutsch Wikipedia

  • callose — I. ˈkaˌlōs adjective Etymology: International Scientific Vocabulary call (from Latin callum hard skin) + ose; originally formed in French more at callous : having protuberant hardened spots …   Useful english dictionary

  • callose — A plant cell wall polysaccharide (a b (1 3) glucan) found in phloem sieve plates, wounded tissue, pollen tubes, cotton fibres, and certain other specialized cells …   Dictionary of molecular biology

  • callose — /kal ohs/, adj. 1. having thickened or hardened spots, as a leaf. n. 2. callus (def. 2). [1860 65; < L callosus; see CALLOUS, OSE1] * * * …   Universalium

  • callose — noun A plant polysaccharide comprising glucose residues linked together through β 1,3 linkages, produced chiefly in response to wounding and infection …   Wiktionary

  • Callose — Cal|lo|se ↑ Kallose …   Universal-Lexikon

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