Cat. # | Size | Price | Inventory |
---|---|---|---|
29443C | 1 Kit (96 assays) |
When ordering five or more kits, please contact us for processing time and pricing.
Looking for this ELISA kit in a 384-well format? Inquire for availability, processing time, and pricing.
REACTIVITY | H M R |
Product Includes | Volume | Solution Color | |||
---|---|---|---|---|---|
Tau Rabbit mAb Coated Microwells | 96 tests | ||||
Tau 4R Rabbit Detection mAb | 1 ea | Red (Lyophilized) | |||
HRP Diluent | 5.5 ml | Red | |||
TMB Substrate 7004 | 11 ml | ||||
STOP Solution 7002 | 11 ml | ||||
Sealing Tape | 2 ea | ||||
ELISA Wash Buffer (20X) 9801 | 25 ml | ||||
Cell Lysis Buffer (10X) 9803 | 15 ml |
Product Information
NOTE: This protocol is for PathScan® kits that use an HRP directly conjugated to the detection antibody (Rapid Protocol), rather than a 2-step method where the detection antibody and a secondary-HRP are added sequentially.
NOTE: Prepare solutions with deionized/purified water or equivalent.
For adherent cells
For suspension cells
NOTE: Equilibrate all materials and prepared reagents to room temperature prior to running the assay.
NOTE: Initial color of positive reaction is blue, which changes to yellow upon addition of STOP Solution.
created July 2020
Protocol Id: 2144
Tau 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). The localization of tau 3R and tau 4R in cells can be expressed differently in mild or pathological conditions, including tau 3R in Pick's disease (PiD) and corticobasal degeneration (CBD), while in Alzheimer's disease equally expresses both tau 3R and tau 4R (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).
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