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4.6.3 Glycine-rich proteins (GRPs)
Type II arabinogalactan-proteins (AGPs) are better classified as proteoglycans, owing to the relatively large proportion of the carbohydrate moieties. The functions of AGPs are still unknown, although the presence of glycosylphosphorylinositide (GPI) anchors and a rapid turnover from the Golgi vesicles and plasma membrane suggest that they are involved in wall dynamics and signaling.
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