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Cell. 1991 May 31;65(5):849-57.

The 102 kd cadherin-associated protein: similarity to vinculin and posttranscriptional regulation of expression.

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Department of Information Physiology, National Institute for Physiological Sciences, Okazaki, Japan.


The E-cadherin cell adhesion molecule is associated with cytoplasmic polypeptides, and this association is essential for its cell-binding function. Using isolated adherens junctions of the liver, we purified a 102 kd protein that can associate with E-cadherin (CAP102) and isolated cDNAs encoding this protein. Sequence analysis of the cDNAs revealed that this protein has a similarity to vinculin. L cells not expressing endogenous cadherin express the mRNA for CAP102 but have only a trace amount of CAP102 protein. Introducing exogenous E-cadherin into these cells, however, induced a high expression of CAP102 protein without affecting the amount of its mRNA, suggesting that there is a posttranscriptional regulatory mechanism for this molecule. The same effect was observed by introducing N- or P-cadherin into L cells.

[Indexed for MEDLINE]

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