What is xyloglucan?


Xyloglucan is a hemicellulose that occurs in the primary cell wall of all vascular plants, however essential enzymes for xyloglucan metabolism, like XTH and β1→4-Glucan Synthase are found in Charophyceae algae. In many dicotyledonous plants, it is the most abundant hemicellulose in the primary cell wall. Xyloglucan binds to the surface of cellulose microfibrils and may link them together. It is the substrate of xyloglucan endotransglycosylase, which cuts and ligates xyloglucans, as a means of integrating new xyloglucans into the cell wall. It is also thought to be the substrate of alpha-expansin, which promotes cell wall enlargement.

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Some articles on xyloglucan:

Xyloglucan:xyloglucosyl Transferase
... reaction in which a beta-(14) bond in the backbone of a xyloglucan in broken the xyloglucanyl segment is then transferred to the O4 of the non-reducing terminal ... Other names in common use include endo-xyloglucan transferase, and xyloglucan endotransglycosylase ...
Xyloglucan - Biosynthesis
... Xyloglucan is synthesized in Golgi trans cisternae and in the trans Golgi network (TGN) and is transported to the cell membrane by vesicles, where it is expelled and ...
Hymenaea - Uses and Properties
... large amounts (40% of dry weight) of a highly viscous polysaccharide (xyloglucan) which can be used in several industrical sectors such as food, paper, cosmetic and ... Seedling establishment is promoted by xyloglucan mobilization during development in Hymenaea courbaril ... germinate after about 18 days and start xyloglucan mobilization after 45 days ...