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Ligand recognition and homophilic interactions in Tyro3 - Structural insights into the Axl/Tyro3 receptor tyrosine kinase family

Heiring, C; Dahlbäck, Björn LU and Muller, YA (2004) In Journal of Biological Chemistry 279(8). p.6952-6958
Abstract
The receptor Tyro3 together with Axl and Mer form the Axl/Tyro3 family of receptor tyrosine kinases. Members of this family play essential roles in spermatogenesis, immunoregulation, and phagocytosis. Gas6, the product of growth arrest-specific gene, activates the kinase activity of all three receptors. Here, we report the first biochemical and structural characterization of a member of this family, namely of a fragment spanning the two N-terminal Ig domains of the extracellular part of human Tyro3. Its ligand binding specificity profile is identical to the activation profile of the native receptor. The 1.95-Angstrom crystal structure suggests a common ligand-binding site in this receptor family located at the interface of the Ig domains... (More)
The receptor Tyro3 together with Axl and Mer form the Axl/Tyro3 family of receptor tyrosine kinases. Members of this family play essential roles in spermatogenesis, immunoregulation, and phagocytosis. Gas6, the product of growth arrest-specific gene, activates the kinase activity of all three receptors. Here, we report the first biochemical and structural characterization of a member of this family, namely of a fragment spanning the two N-terminal Ig domains of the extracellular part of human Tyro3. Its ligand binding specificity profile is identical to the activation profile of the native receptor. The 1.95-Angstrom crystal structure suggests a common ligand-binding site in this receptor family located at the interface of the Ig domains and unusually rich in cis-prolines. Furthermore, both in the crystal and in solution we observed the ligand-independent dimerization of the receptor fragment. This homophilic interaction emphasizes previous functional reports, which hinted that in addition to signal transduction, members of this family of receptors might participate in cell adhesion. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Biological Chemistry
volume
279
issue
8
pages
6952 - 6958
publisher
ASBMB
external identifiers
  • wos:000188969200090
  • pmid:14623883
  • scopus:1342346567
ISSN
1083-351X
DOI
10.1074/jbc.M311750200
language
English
LU publication?
yes
id
0ec89493-467c-4a99-83ee-94247af04a12 (old id 287095)
date added to LUP
2007-10-29 16:02:08
date last changed
2017-11-19 03:29:26
@article{0ec89493-467c-4a99-83ee-94247af04a12,
  abstract     = {The receptor Tyro3 together with Axl and Mer form the Axl/Tyro3 family of receptor tyrosine kinases. Members of this family play essential roles in spermatogenesis, immunoregulation, and phagocytosis. Gas6, the product of growth arrest-specific gene, activates the kinase activity of all three receptors. Here, we report the first biochemical and structural characterization of a member of this family, namely of a fragment spanning the two N-terminal Ig domains of the extracellular part of human Tyro3. Its ligand binding specificity profile is identical to the activation profile of the native receptor. The 1.95-Angstrom crystal structure suggests a common ligand-binding site in this receptor family located at the interface of the Ig domains and unusually rich in cis-prolines. Furthermore, both in the crystal and in solution we observed the ligand-independent dimerization of the receptor fragment. This homophilic interaction emphasizes previous functional reports, which hinted that in addition to signal transduction, members of this family of receptors might participate in cell adhesion.},
  author       = {Heiring, C and Dahlbäck, Björn and Muller, YA},
  issn         = {1083-351X},
  language     = {eng},
  number       = {8},
  pages        = {6952--6958},
  publisher    = {ASBMB},
  series       = {Journal of Biological Chemistry},
  title        = {Ligand recognition and homophilic interactions in Tyro3 - Structural insights into the Axl/Tyro3 receptor tyrosine kinase family},
  url          = {http://dx.doi.org/10.1074/jbc.M311750200},
  volume       = {279},
  year         = {2004},
}