Nesprin (clone Nsp-3), anti-mouse

Background:
Nesprin-3, is a member of the nesprin family and is a transmembrane protein of the outer nuclear membrane (ONM). Like nesprin-1 and nesprin-2, nesprin-3 also contains a COOH-terminal klarsicht/ANC-1/syne (KASH) domain and a series of spectrin repeats. In Humans, the full length nesprin-1 and nesprin-2 are giant proteins, containing both an actin-binding domain resulting in molecular masses of respectively 976 and 764 kDa. These proteins are therefore suggested to be involved in nuclear positioning. Nesprin-3, in contrast to nesprin-1 and nesprin-2, lacks the actin-binding domain and cannot bind directly to the cytoskeleton. Nesprin-3 has two isoforms, nesprin-3a and nesprin-3b, which differ in the N-terminus. The Nsp3 monoclonal antibody reacts specifically with nesprin-3a. The N-terminus of nesprin-3a, but not that of nesprin-3b interacts with the cytoskeletal crosslinker protein plectin. Plectin influences the structural organization and integrity of the cytoskeleton and is thought to assist in the mechanical strengthening of the cells. Plectin binds to nesprin-3a and to the intermediate filaments through its C-terminus, suggesting that the interaction between nesprin-3a and plectin links the nucleus to the intermediate filament system. Nesprin-3, like nesprin-1 and nesprin-2 is localized in the nuclear envelope. This localization is due to its interaction with SUN proteins, both SUN-1 and SUN-2, present in the inner nuclear membrane.

Clone: Nsp-3

Isotype: Mouse IgG

Source: Nsp3 is a Mouse monoclonal antibody made by immunization of Balb/c mice with the GST fusion protein encoding the seventh spectrin repeat of NSP-3a.

Reactivity: mouse

Specificity: Nsp3 reacts specifically with nesprin-3a.

Form: Each vial contains 100ul 1 mg/ml purified monoclonal antibody in PBS containing 0.09% sodium azide.

Applications: Immunohistochemistry (frozen)

Storage: Store at 4C, or in small aliquots at -20C.