Phospho-Tau (Thr205) (E7D3E) Rabbit mAb (BSA and Azide Free) #20739

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WB
IHC
ELISA
IF

Supporting Data

REACTIVITY	H M R
SENSITIVITY	Endogenous
MW (kDa)	50-80
Source/Isotype	Rabbit IgG

Application Key:

WB-Western Blotting
IHC-Immunohistochemistry
ELISA-ELISA
IF-Immunofluorescence

Species Cross-Reactivity Key:

H-Human
M-Mouse
R-Rat

Product Information

Product Usage Information

This product is the carrier-free version of product #49561. All data were generated using the same antibody clone in the standard formulation which contains BSA and glycerol.

This formulation is ideal for use with technologies requiring specialized or custom antibody labeling, including fluorophores, metals, lanthanides, and oligonucleotides. It is not recommended for ChIP, ChIP-seq, CUT&RUN, or CUT&Tag assays. If you require a carrier-free formulation for chromatin profiling, please contact us. Optimal dilutions/concentrations should be determined by the end user.

BSA and Azide Free antibodies are quality control tested by size exclusion chromatography (SEC) to determine antibody integrity.

Formulation

Supplied in 1X PBS (10 mM Na₂HPO₄, 3 mM KCl, 2 mM KH₂PO₄, and 140 mM NaCl (pH 7.8)). BSA and Azide Free.

For standard formulation of this product see product #49561.

Storage

Store at -20°C. This product will freeze at -20°C so it is recommended to aliquot into single-use vials to avoid multiple freeze/thaw cycles. A slight precipitate may be present and can be dissolved by gently vortexing. This will not interfere with antibody performance.

Specificity / Sensitivity

Phospho-Tau (Thr205) (E7D3E) Rabbit mAb (BSA and Azide Free) recognizes endogenous levels of tau protein only when phosphorylated at Thr205.

Species Reactivity:

Human, Mouse, Rat

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding the Thr205 of human tau protein.

Background

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).

Phosphorylation of tau at Thr205 is found in Alzheimer's disease brain. This phosphorylation is the result of the activity of GSK-3, protein-kinase A (PKA), and other kinases (4,5). Protein phosphatases have been shown to decrease the levels of phospho-tau at Thr205, including protein phosphatase 5 (PP5) (6).

Database Links

UniProt ID: P10636-8

Entrez-Gene Id: 4137

Limited Uses

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For Research Use Only. Not For Use In Diagnostic Procedures.

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