Desmin/DES Protein, Human (His)

Desmin, a muscle-specific type III intermediate filament, is indispensable for maintaining the structural integrity and optimal function of muscles. It plays a crucial role in forming myofibrils and interconnecting Z-disks, providing strength to muscle fibers during activity. In adult striated muscle, Desmin contributes to the fibrous network that links myofibrils to each other and to the plasma membrane at the periphery of Z-line structures. Additionally, Desmin may serve as a sarcomeric microtubule-anchoring protein by associating with detyrosinated tubulin-alpha chains, resulting in buckled microtubules and increased mechanical resistance to contraction. Beyond its structural functions, Desmin participates in the transcriptional regulation of the NKX2-5 gene during cardiomyogenesis and in cardiac side population stem cells. Moreover, it plays a role in maintaining the optimal conformation of nebulette on heart muscle sarcomeres, facilitating the binding and recruitment of cardiac alpha-actin. Desmin engages in various interactions with proteins such as DST, MTM1, EPPK1, CRYAB, NEB, NEBL, ASB2, PLEC, and PKP1, highlighting its multifaceted involvement in molecular networks essential for muscle physiology.