期刊
FEBS LETTERS
卷 583, 期 14, 页码 2321-2325出版社
WILEY
DOI: 10.1016/j.febslet.2009.06.046
关键词
Botulinum neurotoxin; Membrane electrostatics; Protein dipole; Presynaptic membrane
资金
- Telethon [GGP06133]
- Fondazione Cariparo Progetto
- Ministero dell'Universita' e della ricerca [FIRB RBNE03B8KK]
Botulinum neurotoxins are highly potent toxins capable of rapid and specific interaction with the presynaptic membrane. We have hypothesised that: (1) these neurotoxins possess an electric dipole with the positive pole on receptor binding domain Hc-C and that (2) on approaching the negatively charged presynaptic membrane, they reorient themselves and hit the membrane surface with Hc-C; this electrostatic effect would contribute efficient binding. Electrostatic calculations confirm these hypotheses and strongly indicate that electrostatics effects can play an important role in the unique presynaptic membrane binding properties of these neurotoxins and generally on the interaction of other plasma membrane protein ligands. (C) 2009 Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies.
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