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Proteins of the p120 family have been implicated in the regulation of cadherin-based cell adhesion, but their relative importance in this process and their mechanism of action have remained less clear. Three papers in this issue suggest that p120 plays a key role in maintaining normal levels of cadherin in mammalian cells, and that it may do so by regulating cadherin trafficking (Chen et al., 2003; Davis et al., 2003; Xiao et al., 2003).
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Peifer et al. (2003) studied this question.
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