Proc Natl Acad Sci U S A 2008 Aug 6;105(32):11406-11. Epub 2008 Aug 6.
Biozentrum and Institute of Physiology, Department of Biomedicine, University of Basel, Klingelbergstrasse 70, 4056 Basel, Switzerland.
Agrin and its receptor MuSK are required for the formation of the postsynaptic apparatus at the neuromuscular junction (NMJ). In the current model the local deposition of agrin by the nerve and the resulting local activation of MuSK are responsible for creating and maintaining the postsynaptic apparatus including clusters of acetylcholine receptors (AChRs). Concomitantly, the release of acetylcholine (ACh) and the resulting depolarization disperses those postsynaptic structures that are not apposed by the nerve and thus not stabilized by agrin-MuSK signaling. Read More