1. Anchoring antibodies to membranes using a diphtheria toxin T domain-ZZ fusion protein as a pH sensitive membrane anchor
- Author
-
Carole Gaillard, Daniel Gillet, Dominique Liger, and Philippe Nizard
- Subjects
Vesicle-associated membrane protein 8 ,Cell Membrane Permeability ,Recombinant Fusion Proteins ,Biophysics ,Biochemistry ,Transmembrane domain ,Mice ,Structural Biology ,Protein A/G ,Escherichia coli ,Genetics ,Animals ,Staphylococcal Protein A ,Molecular Biology ,Diphtheria toxin ,Targeting ,biology ,Chemistry ,Binding protein ,Antibodies, Monoclonal ,Cell Biology ,Hydrogen-Ion Concentration ,Fusion protein ,Membrane ,Immunoglobulin G ,Liposomes ,Mutation ,Membrane anchor ,biology.protein ,Protein A ,Rabbits ,Membrane insertion - Abstract
We have constructed a fusion protein, T-ZZ, in which the IgG-Fc binding protein ZZ was fused to the C-terminus of the diphtheria toxin transmembrane domain (T domain). While soluble at neutral pH, T-ZZ retained the capacity of the T domain to bind to phospholipid membranes at acidic pH. Once anchored to the membrane, the ZZ part of the protein was capable of binding mouse monoclonal or rabbit polyclonal IgG. Our results show that the T-ZZ protein can function as a pH sensitive membrane anchor for the linkage of IgG to the membrane of lipid vesicles, adherent and non-adherent cells.
- Published
- 1998