Leucine Motif-dependent Tyrosine Autophosphorylation of Type III Receptor Tyrosine Kinases

Interactions between Type III receptor tyrosine phosphatases and growth factor receptor tyrosine kinases regulate tracheal tube formation in Drosophila

The respiratory (tracheal) system of the Drosophila melanogaster larva is an intricate branched network of air-filled tubes. Its developmental logic is similar in some ways to that of the vertebrate vascular system. We previously described a unique embryonic tracheal tubulogenesis phenotype caused by loss of both of the Type III receptor tyrosine phosphatases (RPTPs), Ptp4E and Ptp10D. In Ptp4E...

Evolution of Receptor Tyrosine Kinases

Receptor tyrosine kinases (RTKs) are important molecules for communication of cells in multicellular animals. It is therefore not surprising that the basal metazoans, like Hydra and sponges, already have a well-developed repertoire of RTKs. Even the choanofl agellate Monosiga brevicollis , a unicellular eukaryote from a group of protozoa that are thought to represent the ancestors of metazoa or...

Receptor tyrosine kinases in carcinogenesis

Receptor tyrosine kinases (RTKs) are cell surface glycoproteins with enzymatic activity involved in the regulation of various important functions. In all-important physiological functions including differentiation, cell-cell interactions, survival, proliferation, metabolism, migration and signaling these receptors are the key players of regulation. Additionally, mutations of RTKs or their overe...

Non-receptor protein tyrosine kinases.

The protein tyrosine kinases (PTKs) are enzymes catalyzing the transfer of the gamma-phosphate group of ATP to the hydroxyl groups of specific tyrosine residues in peptides. Although phosphotransfer reactions catalyzed by various PTKs are similar with regard to their basic mechanisms, their biological functions demonstrate a considerable degree of specificity. PTKs are divided into two groups a...

Receptor Tyrosine Kinases — Expanding Horizons