| Obsolete | false |
| description | A specialized muscle nucleus that is part of an extrafusal muscle fiber and overlaps the muscle-tendon junction, where muscle fibers connect to tendons. Characterized by a distinct transcriptional profile with the expression of genes like COL22A1, this myonucleus supports the structural integrity and function of the junction, playing a key role in transmitting the force generated by muscle contraction to the tendon. |