Structure of Plant Cell Walls

摘要: This paper describes the isolation and characterization of rhamnogalacturonan II, a hitherto unobserved component primary cell walls dicotyledonous plants. Rhamnogalacturonan II constitutes 3 to 4% suspension-cultured sycamore (Acer pseudoplatanus) cells. is very complex polysaccharide yielding, upon hydrolysis, 10 different monosaccharides including rarely observed sugars apiose, 2-O-methylxylose, 2-O-methylfucose. In addition, characterized by glycosyl interconnections 2-linked glucuronosyl, 3,4-linked fucosyl, 3-linked rhamnosyl residues. These linkages have never previously been detected in walls. Evidence presented which suggests that polysaccharides similar are present three other plants examined.