DP 2.17 shows distinct punctate membrane staining of epithelia. It reacts with the rod fragment of Desmoplakin 1 (Mr 250,000 polypeptide of desmosomal plaques). Tested Reactivities on Cultured Cell Lines: Several Human carcinoma cell lines: MCF-7, A-431, TR-146. Bovine cells: MDBK, BMGE.
Cross-Reactivity (Details)
Species reactivity (tested):Human, Bovine, Rat, Chicken and Mouse.
DSP
Reactivity: Human
ELISA
Host: Rabbit
Polyclonal
HRP
Application Notes
Immunohistochemistry on frozen and paraffin embedded sections after microwavetreatment (dilute 1: 10 with PBS pH 7.4). Western blot (Incubation time: 1h at RT). Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.
Desmosomes are intercellular junctions that form tight links between adjacent cells. Desmoplakin is an obligate component of functional desmosomes that attaches intermediate filaments to desmosomal plaques. It is involved in the organization of desmosomal cadherin-plakoglobin complexes into discrete plasma membrane domains. The N-terminus of desmoplakin is essential for localisation to the desmosome and interaction with plakophilin 1 and plakoglobin. The C-terminus of desmoplakin binds to intermediate filaments. The central region of desmoplakin comprises a coiled-coil rod domain that mediates homodimerisation. There are two isoforms of desmoplakin - desmoplakin I, which is an obligate component of all desmosomes, and desmoplakin II, which is predominantly expressed in tissues and cells of stratified origin. Mutations in the gene encoding desmoplakin result in a number of cardiomyopathies and keratodermas as well as the autoimmune disease paraneoplastic pemphigus.Synonyms: 250/210 kDa paraneoplastic pemphigus antigen, DP, DSP