| Obsolete | false |
| description | A specialized muscle nucleus that is part of an extrafusal muscle fiber, clustered at the postsynaptic side of the neuromuscular junction. This nucleus exhibits a distinct transcriptional profile, including acetylcholine receptor (AChR) subunit genes. It regulates the production of proteins essential for maintaining the structure and function of the neuromuscular junction, supporting efficient nerve-muscle signaling for muscle contraction. |
