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B001/B101
Shirley, MA 01464
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Floor 6, Suite 620
20700 44th Avenue W
Lynnwood, WA 98036
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ALK
anaplastic lymphoma receptor tyrosine kinase
Neuronal orphan receptor tyrosine kinase that is essentially and transiently expressed in specific regions of the central and peripheral nervous systems and plays an important role in the genesis and differentiation of the nervous system. Transduces signals from ligands at the cell surface, through specific activation of the mitogen-activated protein kinase (MAPK) pathway. Phosphorylates almost exclusively at the first tyrosine of the Y-x-x-x-Y-Y motif. Following activation by ligand, ALK induces tyrosine phosphorylation of CBL, FRS2, IRS1 and SHC1, as well as of the MAP kinases MAPK1/ERK2 and MAPK3/ERK1. Acts as a receptor for ligands pleiotrophin (PTN), a secreted growth factor, and midkine (MDK), a PTN-related factor, thus participating in PTN and MDK signal transduction. PTN-binding induces MAPK pathway activation, which is important for the anti-apoptotic signaling of PTN and regulation of cell proliferation. MDK-binding induces phosphorylation of the ALK target insulin receptor substrate (IRS1), activates mitogen-activated protein kinases (MAPKs) and PI3-kinase, resulting also in cell proliferation induction. Drives NF-kappa-B activation, probably through IRS1 and the activation of the AKT serine/threonine kinase. Recruitment of IRS1 to activated ALK and the activation of NF-kappa-B are essential for the autocrine growth and survival signaling of MDK.
| Gene Name: | anaplastic lymphoma receptor tyrosine kinase |
| Family/Subfamily: | Protein Kinase , LTK/ALK |
| Synonyms: | ALK, ALK tyrosine kinase receptor, Anaplastic lymphoma kinase, CD246 antigen, CD246, Ki-1, NBLST3, Npm/alk |
| Target Sequences: | NM_004304 NP_004295.2 Q9UM73 |
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