PTK7

Receptor protein tyrosine kinases transduce extracellular signals across the cell membrane. A subgroup of these kinases lack detectable catalytic tyrosine kinase activity but retain roles in signal transduction. The protein encoded by this gene is a member of this subgroup of tyrosine kinases and may function as a cell adhesion molecule. This gene is thought to be expressed in colon carcinomas but not in normal colon, and therefore may be a marker for or may be involved in tumor progression. Four transcript variants encoding four different isoforms have been found for this gene. [provided by RefSeq]

protein tyrosine kinase 7

Inactive tyrosine kinase involved in Wnt signaling pathway. Component of both the non-canonical (also known as the Wnt/planar cell polarity signaling) and the canonical Wnt signaling pathway. Functions in cell adhesion, cell migration, cell polarity, proliferation, actin cytoskeleton reorganization and apoptosis. Has a role in embryogenesis, epithelial tissue organization and angiogenesis.

Actin cytoskeleton reorganizationManual Assertion Based On ExperimentIMP:UniProtKB
Axis elongationIEA:Ensembl
Cell adhesionManual Assertion Based On ExperimentIBA:GO_Central
Cell migrationManual Assertion Based On ExperimentIMP:UniProtKB
Cellular response to retinoic acidManual Assertion Based On ExperimentIMP:BHF-UCL
Cochlea morphogenesisIEA:Ensembl
Convergent extensionIEA:Ensembl
Coronary vasculature developmentIEA:Ensembl
Establishment of epithelial cell apical/basal polarityIEA:Ensembl
Establishment of planar polarityIEA:Ensembl
Kidney developmentIEA:Ensembl
Lung-associated mesenchyme developmentIEA:Ensembl
Planar cell polarity pathway involved in neural tube closureIEA:Ensembl
Positive regulation of canonical Wnt signaling pathwayManual Assertion Based On ExperimentIMP:UniProtKB
Positive regulation of neuron projection developmentManual Assertion Based On ExperimentIMP:BHF-UCL
Protein phosphorylationIEA:InterPro
Regulation of canonical Wnt signaling pathwayManual Assertion Based On ExperimentIBA:GO_Central
Signal transductionManual Assertion Based On ExperimentTAS:ProtInc
Ventricular septum developmentIEA:Ensembl
Wound healingIEA:Ensembl

Membrane
Cell junction
Colocalizes with MMP14 at cell junctions. Also localizes at the leading edge of migrating cells.

Extracellular: 31-704
Helical: 705-725
Cytoplasmic: 726-1070

MMP14 cleaves PTK7 between Pro-621 and Leu-622 generating an N-terminal soluble (70 kDa) fragment and a membrane C-terminal (50 kDa) fragment. Proteolysis by MMP14 regulates PTK7 function in non-canonical Wnt signaling pathway.