{"product_id":"cst-28733p","title":"CST,  28733P, Tau 4R (E7T4F) Rabbit Monoclonal Antibody (Biotinylated)","description":"Monoclonal Antibody for studying Tau iso6\/Tau iso7\/Tau iso8. Validated for Peptide ELISA (DELFIA). Highly specific and rigorously validated in-house, Tau 4R (E7T4F) Rabbit Monoclonal Antibody (Biotinylated) (CST #28733) is ready to ship.\n\n\u003cb\u003eProduct Usage Information\u003c\/b\u003e\nBiotinylated antibodies are ideal for immunoassay technologies and high-throughput ELISA platforms that require antibody pairs where both antibodies are from the same host. Platforms utilizing biotinylated antibodies include, but are not limited to, MSD, xMAP, Quanterix Simoa, AlphaLISA, AlphaScreen, HTRF, LANCE, and TR-FRET. Optimal dilutions\/working concentrations should be determined by the end user. Please contact us if you require the antibody clone biotinylated at a different concentration, a carrier-free formulation, or a more customized packaging solution.\n\u003cb\u003eStorage\u003c\/b\u003e\nSupplied in 140 mM NaCl, 3 mM KCl, 10 mM sodium phosphate (pH 7.4) dibasic, 2 mM potassium phosphate monobasic, 2 mg\/mL BSA, and 50% glycerol. Store at -20°C. Do not aliquot the antibody.\n\u003cb\u003eSpecificity \/ Sensitivity\u003c\/b\u003e\nTau 4R (E7T4F) Rabbit Monoclonal Antibody (Biotinylated) recognizes endogenous levels of total tau isoforms 6, 7, and 8 protein (Tau 4R). This antibody does not cross-react with tau isoforms 2, 4, or 5 (Tau 3R).\nSpecies Reactivity: Human, Mouse, Rat\n\u003cb\u003eSource \/ Purification\u003c\/b\u003e\nMonoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Leu284 of isoform 8 of human Tau 4R protein.\n\u003cb\u003eBackground\u003c\/b\u003e\nTau is a heterogeneous microtubule-associated protein that promotes and stabilizes microtubule assembly, especially in axons. Six isoforms with different amino-terminal inserts and different numbers of tandem repeats near the carboxy terminus have been identified, and tau is hyperphosphorylated at approximately 25 sites by Erk, glycogen synthase kinase-3 (GSK-3), and CDK5 (1,2). Phosphorylation decreases the ability of tau to bind to microtubules. Neurofibrillary tangles are a major hallmark of Alzheimer's disease (AD); these tangles are bundles of paired helical filaments (PHFs) composed of hyperphosphorylated tau. In particular, phosphorylation at Ser396 by GSK-3 or CDK5 destabilizes microtubules. Furthermore, research studies have shown that inclusions of tau are found in a number of other neurodegenerative diseases, collectively known as tauopathies (1,3). Alternative splicing of exon 10 results in the expression of two groups of tau: three-repeat and four-repeat tau. Isoforms 2, 4, and 5 express three microtubule binding repeat domains (tau 3R) while isoforms 6, 7, and 8 express four microtubule binding repeat domains (tau 4R) (4). Expression of tau 3R and tau 4R in cells can be different in mild or pathological conditions. For example, tau 3R is preferentially expressed in Pick's disease (PiD) and corticobasal degeneration (CBD), while tau 3R and tau 4R are equally expressed in AD (5,6). The repeat-dependent tau has a different pattern of phosphorylation in different diseases, and also has the ability and patterns of aggregation (7-9).\n\u003cb\u003eAlternate Names\u003c\/b\u003e\nDDPAC; FLJ31424; FTDP-17; G protein beta1\/gamma2 subunit-interacting factor 1; MAPT; MAPTL; MGC138549; microtubule associated protein tau; Microtubule-associated protein tau; MSTD; MTBT1; MTBT2; Neurofibrillary tangle protein; Paired helical filament-tau; PHF-tau; PPND; PPP1R103; protein phosphatase 1, regulatory subunit 103; Tau; TAU; Tau iso6; Tau iso7; Tau iso8; Tau isoform Tau-E\n\n\u003cb\u003eSpecification\u003c\/b\u003e\n\nREACTIVITY: H M R\nSENSITIVITY: Endogenous\nMW (kDa): 50-80\nSource\/Isotype: Rabbit IgG","brand":"CST","offers":[{"title":"Default Title","offer_id":46800372367529,"sku":"28733P","price":0.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/iright.com\/products\/cst-28733p","provider":"Iright","version":"1.0","type":"link"}