Characterization of the non-functional Fas ligand of gld mice
Détails
Etat: Public
Version: Final published version
Licence: Non spécifiée
It was possible to publish this article open access thanks to a Swiss National Licence with the publisher.
ID Serval
serval:BIB_0BA9B77E7F43
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Characterization of the non-functional Fas ligand of gld mice
Périodique
International Immunology
ISSN
0953-8178 (Print)
Statut éditorial
Publié
Date de publication
09/1995
Volume
7
Numéro
9
Pages
1381-6
Notes
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Sep
Research Support, Non-U.S. Gov't --- Old month value: Sep
Résumé
Mice homozygous for either the gld or lpr mutation develop autoimmune diseases and progressive lymphadenopathy. The lpr mutation is characterized by the absence of functional Fas, whereas gld mice exhibit an inactive FasL due to a point mutation proximal to the extracellular C-terminus. The structural repercussions of this amino acid substitution remain unknown. Here we report that FasL is expressed at similar levels on the surface of activated T lymphocytes from gld and wild-type mice. Using a polyclonal anti-FasL antibody, indistinguishable amounts of a 40 kDa protein are detected in both gld and wild-type splenocytes. The molecular model of FasL, based on the known structure of TNF-alpha, predicts that the Phe --> Leu gld mutation is located at the protomer interface which is close to the FasR interaction site. We conclude that the gld mutation allows normal FasL biosynthesis, surface expression and oligomerization, but induces structural alterations to the Fas binding region leading to the phenotypic changes observed.
Mots-clé
Amino Acid Sequence
Animals
Autoimmune Diseases/*genetics
Base Sequence
Fas Ligand Protein
Humans
Membrane Glycoproteins/analysis/*chemistry/genetics
Mice
Mice, Mutant Strains
Molecular Sequence Data
Mutation
Protein Conformation
Rats
T-Lymphocytes/chemistry
Pubmed
Web of science
Open Access
Oui
Création de la notice
24/01/2008 16:19
Dernière modification de la notice
14/02/2022 8:53