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Kinase-dependent an...
Kinase-dependent and kinase-independent functions of EphA4 receptors in major axon tract formation in vivo
- Article/chapterEnglish2001
Publisher, publication year, extent ...
Numbers
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LIBRIS-ID:oai:DiVA.org:uu-70652
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-70652URI
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https://doi.org/10.1016/S0896-6273(01)00181-7DOI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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The EphA4 receptor tyrosine kinase regulates the formation of the corticospinal tract (CST), a pathway controlling voluntary movements, and of the anterior commissure (AC), connecting the neocortical temporal lobes. To study EphA4 kinase signaling in these processes, we generated mice expressing mutant EphA4 receptors either lacking kinase activity or with severely downregulated kinase activity. We demonstrate that EphA4 is required for CST formation as a receptor for which it requires an active kinase domain. In contrast, the formation of the AC is rescued by kinase-dead EphA4, suggesting that in this structure EphA4 acts as a ligand for which its kinase activity is not required. Unexpectedly, the cytoplasmic sterile-alpha motif (SAM) domain is not required for EphA4 functions. Our findings establish both kinase-dependent and kinase-independent functions of EphA4 in the formation of major axon tracts.
Subject headings and genre
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MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Neurovetenskaper hsv//swe
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MEDICAL AND HEALTH SCIENCES Basic Medicine Neurosciences hsv//eng
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Animals
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Axons/*enzymology
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Brain Stem/cytology/embryology/enzymology
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Ephrin-A4
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Ephrin-B2
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Fetal Proteins/deficiency/genetics/*metabolism
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In Situ Hybridization
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Membrane Proteins/biosynthesis/genetics
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Mice
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Mice; Knockout
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Mice; Mutant Strains
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Molecular Sequence Data
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Motor Cortex/cytology/embryology/enzymology
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Organ Specificity
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Prosencephalon/cytology/embryology/enzymology
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Protein Structure; Tertiary/genetics
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Pyramidal Tracts/cytology/*embryology/*enzymology
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RNA; Messenger/biosynthesis
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Receptor Protein-Tyrosine Kinases/deficiency/genetics/*metabolism
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Receptor; EphA4
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Research Support; Non-U.S. Gov't
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Signal Transduction/genetics
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Temporal Lobe/cytology/embryology
Added entries (persons, corporate bodies, meetings, titles ...)
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Mather, N K
(author)
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Diella, F
(author)
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Dottori, M
(author)
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Boyd, A W
(author)
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Klein, R
(author)
Related titles
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In:Neuron29:1, s. 73-840896-62731097-4199
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