Continuous association of cadherin with β-catenin requires the non-receptor tyrosine-kinase Fer

Gang Xu, Andrew W B Craig, Peter Greer, Matthew Miller, Panagiotis Z Anastasiadis, Jack Lilien, Janne Balsamo

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

The function of Type 1, classic cadherins depends on their association with the actin cytoskeleton, a connection mediated by α - and β-catenin. The phosphorylation state of β-catenin is crucial for its association with cadherin and thus the association of cadherin with the cytoskeleton. We now show that the phosphorylation of β-catenin is regulated by the combined activities of the tyrosine kinase Fer and the tyrosine phosphatase PTP1B. Fer phosphorylates PTP1B at tyrosine 152, regulating its binding to cadherin and the continuous dephosphorylation of β-catenin at tyrosine 654. Fer interacts with cadherin indirectly, through p120ctn. We have mapped the interaction domains of Fer and p120ctn and peptides corresponding to these sequences release Fer from p120ctn in vitro and in live cells, resulting in loss of cadherin-associated PTP1B, an increase in the pool of tyrosine phosphorylated β-catenin and loss of cadherin adhesion function. The effect of the peptides is lost when a β-catenin mutant with a substitution at tyrosine 654 is introduced into cells. Thus, Fer phosphorylates PTP1B at tyrosine 152 enabling it to bind to the cytoplasmic domain of cadherin, where it maintains β-catenin in a dephosphorylated state. Cultured fibroblasts from mouse embryos targeted with a kinase-inactivating ferD743R mutation have lost cadherin-associated PTP1B and β-catenin, as well as localization of cadherin and β-catenin in areas of cell-cell contacts. Expression of wild-type Fer or culture in epidermal growth factor restores the cadherin complex and localization at cell-cell contacts.

Original languageEnglish (US)
Pages (from-to)3207-3219
Number of pages13
JournalJournal of Cell Science
Volume117
Issue number15
DOIs
StatePublished - Jul 1 2004

Fingerprint

Catenins
Cadherins
Protein-Tyrosine Kinases
Tyrosine
Phosphorylation
Peptides
Cytoskeleton
Actin Cytoskeleton
Phosphoric Monoester Hydrolases
Epidermal Growth Factor
Phosphotransferases
Embryonic Structures
Fibroblasts

Keywords

  • β-Catenin
  • Adhesion
  • Cadherin
  • Fer tyrosine kinase
  • PTP1B tyrosine phosphatase

ASJC Scopus subject areas

  • Cell Biology

Cite this

Continuous association of cadherin with β-catenin requires the non-receptor tyrosine-kinase Fer. / Xu, Gang; Craig, Andrew W B; Greer, Peter; Miller, Matthew; Anastasiadis, Panagiotis Z; Lilien, Jack; Balsamo, Janne.

In: Journal of Cell Science, Vol. 117, No. 15, 01.07.2004, p. 3207-3219.

Research output: Contribution to journalArticle

Xu, Gang ; Craig, Andrew W B ; Greer, Peter ; Miller, Matthew ; Anastasiadis, Panagiotis Z ; Lilien, Jack ; Balsamo, Janne. / Continuous association of cadherin with β-catenin requires the non-receptor tyrosine-kinase Fer. In: Journal of Cell Science. 2004 ; Vol. 117, No. 15. pp. 3207-3219.
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AB - The function of Type 1, classic cadherins depends on their association with the actin cytoskeleton, a connection mediated by α - and β-catenin. The phosphorylation state of β-catenin is crucial for its association with cadherin and thus the association of cadherin with the cytoskeleton. We now show that the phosphorylation of β-catenin is regulated by the combined activities of the tyrosine kinase Fer and the tyrosine phosphatase PTP1B. Fer phosphorylates PTP1B at tyrosine 152, regulating its binding to cadherin and the continuous dephosphorylation of β-catenin at tyrosine 654. Fer interacts with cadherin indirectly, through p120ctn. We have mapped the interaction domains of Fer and p120ctn and peptides corresponding to these sequences release Fer from p120ctn in vitro and in live cells, resulting in loss of cadherin-associated PTP1B, an increase in the pool of tyrosine phosphorylated β-catenin and loss of cadherin adhesion function. The effect of the peptides is lost when a β-catenin mutant with a substitution at tyrosine 654 is introduced into cells. Thus, Fer phosphorylates PTP1B at tyrosine 152 enabling it to bind to the cytoplasmic domain of cadherin, where it maintains β-catenin in a dephosphorylated state. Cultured fibroblasts from mouse embryos targeted with a kinase-inactivating ferD743R mutation have lost cadherin-associated PTP1B and β-catenin, as well as localization of cadherin and β-catenin in areas of cell-cell contacts. Expression of wild-type Fer or culture in epidermal growth factor restores the cadherin complex and localization at cell-cell contacts.

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