114. Brown, Jr. R. M. 1987. The biosynthesis of cellulose. Food Hydrocolloids, 1(5/6):345-351.

114. Abstract

To date, two basic cellulose synthesizing structures (TCs) have been described, the linear TC, typical of giant algae such as Boergesenia, Valonia and Eremosphaera and the rosette TC characteristic of all vascular plants, ferns, mosses and certain algae such as Chara, Nitella and Mougeotia. Linear terminal complexes are transported to the surface as subunits and later assembled into the linear structure. These linear structures continue to grow in length during microfibril assembly. The relationship of the TC structure to microfibril dimensions is discussed. Rosette TCs appear to be pre-assembled in the Golgi apparatus and transported to the surface intact. The topographical localization of TC structure in relation to patterns of microfibril deposition is described. The structure of the TC is discussed in relation to the synthesis of cellulose I and II. The biosynthesis of microbial cellulose by Acetobacter xylinum is summarized. Recent evidence for in vivo cellulose synthesis is given. The cellulose synthesizing complexes are located on the inner cytoplasmic membrane of Acetobacter and the regulatory proteins for controlling microfibril assembly may be located on the outer lipopolysaccharide membrane. Recent studies of in vitro synthesis indicated that cellulose II is made in vitro, whereas cellulose I is the more common allomorph produced in vivo.

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Last modified 27 October 2005.
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