Storage Buffer | 10 mM HEPES, 100 mM NaCl pH 7.4 |
Storage Temperature | -80ºC |
Shipping Temperature | Dry Ice. Shipping note: Product will be shipped separately from other products purchased in the same order. |
Purification | Ion-exchange Purified |
Cite This Product | Human Recombinant Tau Protein (StressMarq Biosciences Inc., Victoria BC CANADA, Catalog # SPR-328) |
Certificate of Analysis | Certified >95% pure using SDS-PAGE analysis. Low endotoxin <5 EU/mL @ 2mg/mL. |
Other Relevant Information | For corresponding PFFs, see catalog# SPR-330 |
Alternative Names | Tau monomer, Tau protein monomer, Tau protein, microtubule-associated protein Tau, MAPT, MAP, microtubule-associated protein, Tau-441, Paired Helical Filament-Tau, Phf-Tau, Neurofibrillary Tangle Protein, G Protein Beta1/Gamma2 Subunit-Interacting Factor 1, Isoform 4, tubulin-associated unit |
Research Areas | Alzheimer's Disease, Axon Markers, Cell Markers, Cell Signaling, Cytoskeleton, Microtubules, MT Associated Proteins, Neurodegeneration, Neuron Markers, Neuroscience, Tangles & Tau |
Cellular Localization | Axolemma, Axolemma Plasma Membrane, Axon, Cell Body, Cell membrane, Cytoplasm, Cytoplasmic Ribonucleoprotein Granule, Cytoplasmic Side, Cytoskeleton, Cytosol, Dendrite, Growth cone, Microtubule, Microtubule Associated Complex, Neurofibrillary Tangle, Neuronal Cell Body, Nuclear Periphery, Nuclear Speck, Nucleus, Peripheral membrane protein, Plasma Membrane, Tubulin Complex |
Gene ID | 4137 |
Swiss Prot | P10636 |
Scientific Background | Alzheimer’s Disease (AD) is the most common neurodegenerative disease, affecting 10% of seniors over the age of 65 (1). It was named after Alois Alzheimer, a German scientist who discovered tangled bundles of fibrils where neurons had once been in the brain of a deceased patient in 1907 (2). Tau (tubulin-associated unit) is normally located in the axons of neurons where it stabilizes microtubules. Tauopathies such as AD are characterized by neurofibrillary tangles containing hyperphosphorylated tau fibrils (3). There are six isoforms of tau in the adult human brain: three with four repeat units (4R) and three with three repeat units (3R) (4). K18 is a truncated form of human tau containing only the 4 microtubule binding repeats (5). P301L (PL) is a mutation where proline is replaced by leucine at codon 301 of tau, and has been linked to frontotemporal dementia (6). |
References |
1. www.alz.org/alzheimers-dementia/facts-figures 2. Alzheimer, A. Über eine eigenartige Erkrankung der Hirnrinde. Allg. Z. Psychiatr. Psych.-Gerichtl. Med. 64, 146–148 (1907) 3. Matsumoto, G. et al. (2018). Int J Mol Sci. 19, 1497. 4. Goedert, M. and Spillantini, M. G. (2017). Mol Brain. 10:18. 5. Guo, J. and Lee, M.Y. (2013). FEBS Lett. 587(6): 717-723. 6. Alberici, A. et al. (2004). J Neurol Neurosurg Psychiatry. 75:1607-1610. |
Thioflavin T is a fluorescent dye that binds to beta sheet-rich structures such as those in tau fibrils. Upon binding, the emission spectrum of the dye experiences a red-shift, and increased fluorescence intensity. Thioflavin T emission curves show increased fluorescence (correlated to tau aggregation) in tau K18 P301L monomers (SPR-328) over time. Thioflavin T ex = 450 nm, em = 485 nm. 10 uM heparin was added to each well.
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