Abstract
Structural analysis of an acetylcholine receptor from Torpedo californica leads to a three-dimensional model in which a "monomeric" receptor is shown to contain subunits arranged around a central ionophoretic channel, which in turn traverses the entire 110 A length of the molecule. The receptor extends approximately 15 A on the cytoplasmic side, 55 A on the synaptic side of the membrane. The alpha-bungarotoxin/agonist binding site is found to be approximately 55 A from the entrance to the central gated ion channel. A hypothesis for the mechanism of AcChR is presented which takes into account the structural and kinetic data, which is testable, and which serves as a focus for future studies on the agonist-induced structure change in AcChR.
Original language | English (US) |
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Pages (from-to) | 371-383 |
Number of pages | 13 |
Journal | Biophysical Journal |
Volume | 37 |
Issue number | 1 |
DOIs | |
State | Published - 1982 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Biophysics