Enaptin, KASH domain-containing protein 1, KASH1, Myocyte nuclear envelope protein 1, Myne-1, Nuclear envelope spectrin repeat protein 1, Synaptic nuclear envelope protein 1, Syne-1 | C6orf98, KIAA0796, KIAA1262, KIAA1756, MYNE1
Primary ID
Q8NF91
Links
- -
Type
protein
Relations
2
Function
Multi-isomeric modular protein which forms a linking network between organelles and the actin cytoskeleton to maintain the subcellular spatial organization. As a component of the LINC (LInker of Nucleoskeleton and Cytoskeleton) complex involved in the connection between the nuclear lamina and the cytoskeleton. The nucleocytoplasmic interactions established by the LINC complex play an important role in the transmission of mechanical forces across the nuclear envelope and in nuclear movement and positioning. May be involved in nucleus-centrosome attachment and nuclear migration in neural progenitors implicating LINC complex association with SUN1/2 and probably association with cytoplasmic dynein-dynactin motor complexes; SYNE1 and SYNE2 may act redundantly. Required for centrosome migration to the apical cell surface during early ciliogenesis. May be involved in nuclear remodeling during sperm head formation in spermatogenenis; a probable SUN3:SYNE1/KASH1 LINC complex may tether spermatid nuclei to posterior cytoskeletal structures such as the manchette.
LINC complex couples the nuclear lamina to the cytoskeleton. SUN domain proteins, SUN1 and SUN2, located at the inner nuclear membrane (INM) interact with the nuclear lamins, Lamin A/C, B1, and B2, that line the nucleoplasmic face of the INM. SUN domain proteins interact with Nesprins in the perinuclear space (PNS). Nesprins protrude from the outer nuclear membrane (ONM) and interact with the cytoskeleton, often through an intermediate binding partner. Nesprin 1 giant (g) and Nesprin 2g potentially link the NE directly to the Z-disc (Z), whereas Nesprin 1alpha and 2alpha may connect via an unknown intermediate protein. In addition, the shorter isoforms of Nesprin 1 and Nesprin 2 may localize to the INM.
Nesprin-1 is involved in the DNA Damage Response network. The Nesprin-1 interaction with MSH2 and MSH6 (MutSα complex) is a constitutive cellular event required for proper DNA repair.