Zablackis E, York W S, Pauly M, Hantus S, Reiter W D, Chapple C C, Albersheim P, Darvill A
Complex Carbohydrate Research Center, University of Georgia, Athens 30602-4712, USA.
Science. 1996 Jun 21;272(5269):1808-10. doi: 10.1126/science.272.5269.1808.
An Arabidopsis thaliana mutant (mur1) has less than 2 percent of the normal amounts of L-fucose in the primary cell walls of aerial portions of the plant. The survival of mur1 plants challenged the hypothesis that fucose is a required component of biologically active oligosaccharides derived from cell wall xyloglucan. However, the replacement of L-fucose (that is, 6-deoxy-L-galactose) by L-galactose does not detectably alter the biological activity of the oligosaccharides derived from xyloglucan. Thus, essential structural and conformational features of xyloglucan and xyloglucan-derived oligosaccharides are retained when L-galactose replaces L-fucose.
一种拟南芥突变体（mur1）在植物地上部分的初生细胞壁中，L-岩藻糖含量不到正常量的2%。mur1植物的存活对岩藻糖是细胞壁木葡聚糖衍生的生物活性寡糖的必需成分这一假设提出了挑战。然而，用L-半乳糖取代L-岩藻糖（即6-脱氧-L-半乳糖）并不会显著改变木葡聚糖衍生的寡糖的生物活性。因此，当L-半乳糖取代L-岩藻糖时，木葡聚糖和木葡聚糖衍生的寡糖的基本结构和构象特征得以保留。
