Tau (pS202)
microtubule-associated protein tau; MAPT

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Product Preparation
A synthetic peptide surrounding of –PGSPG-of human Tau protein with a phosphorylation site Serine 202. This sequence is identical to human, mouse, rat and bovine.
Background
Tau is a microtubule-associated phosphoprotein (MAP), localized in neuronal axons. It promotes tubulin polymerization and stabilizes microtubules. Tau proteins constitute a family of six isoforms which range from 352 to 441 amino acids. The tau variants differ from each other by the presence of either three or four repeat-regions in the carboxy-terminal part of the molecule and the absence or presence of one or two inserts in the amino-terminal part. Tau is hyperphosphorylated by ERK, GSK-3, TPKII and CDK5, at least thirty phosphorylation sites have been described, including Thr39, Ser46, Thr50, Thr69, Thr153, Thr175, Thr 181, Ser198, Ser199, Ser202, Thr205, Ser208, Ser210, Thr212, Ser214, Thr217, Thr231, Ser235, Ser237, Ser241, Ser262, Ser285, Ser305, Ser324, Ser352, Ser356, Ser396, Ser400, Thr403, Ser404, Ser409, Ser412, Ser413, Ser416 and Ser422. These sites are among the major abnormal phosphorylation sites of Tau. Phosphorylation on these sites reduces the ability of a given Tau species to promote microtubule self-assembly. Hyperphosphorylated Tau is the major protein of the paired helical filaments (PHFs), which make up the pathological neurofibrillary tangles of Alzheimer’s disease (AD). The PHFs are also found in the lesions of other central nervous system disorders.
PURIFICATION
The Rabbit IgG is purified by site-modified Epitope Affinity Purification.
SPECIFICITY
This antibody recognizes phosphorylated Serine 202 of human Tau protein. It does not recognize the non-phosphorylated Tau or other phosphorylation sites.
FORMULATION
This affinity purified antibody is supplied in sterile Tris-buffered saline (pH7.2) containing antibody stabilizer.
STORAGE
The antibodies are stable for 12 months from date of receipt when stored at –20oC. The antibodies can be stored at 2oC-8oC for one month without detectable loss of activity. Avoid repeated freezing-thawing cycles.
Gene ID
4137
Applications/Suggested Working Dilutions
Western Blot
0.1-1 µg/ml
ELISA
0.01-0.1 µg/ml
Immunoprecipitation
2-5 µg/ml
IHC
2-10 µg/ml
Flow cytometry
5-10 µg/ml
Order Info
Catalog #: 620-650
Lot #: See the label
Size: 100 ug
Host: Rabbit
Isotyping: Rabbit IgG
Applications: ELISA, WB, IHC
Reactivity: Hu, Ms, Rt
Price: $ 345.00
REFERENCES
M.Goedert, et al. Phosphorylation of microtubule-associated protein tau by stress-activated protein kinases. FEBS Letters, 409 (1), 57-62 (2009).
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