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SPR-496B SPR-496C SPR-496E

Tau-441 (2N4R) Wild-Type Monomers (Baculovirus/Sf9)

Stressmarq Biosciences


Human Recombinant Tau-441 (2N4R) Wild-Type Monomers (Baculovirus/Sf9)


  • Nature: Recombinant
  • Purity: >95%
  • Target: Tau
  • Category: Protein
  • Conjugate: No Tag
  • References: 1. Goedert et al. 1989. Multiple Isoforms of Human Microtubule-associated Protein Tau: Sequences and Localization in Neurofibrilary Tangles of Alzheimer’s Disease. Neuron. doi: 10.1016/0896-6273(89)90210-9. 2. Iqbal K., Liu F., and Gong C.X. 2016. Tau and neurodegenerative disease: The story so far. Nat. Rev. Neurol. DOI: 10.1038/nrneurol.2015.225 3. Tepper et al. 2014. Oligomer Formation of Tau Protein Hyperphophorylated in Cells. The Journal of Biological Chemistry, DOI 10.1074/jbc.M114.611368
  • Applications: WB | SDS PAGE | In vitro Assay
  • Field of Use: Not for use in humans. Not for use in diagnostics or therapeutics. For research use only.
  • Protein Size: 45.84 kDa
  • Purification: Ion-exchange Purified
  • Concentration: Lot/batch specific. See included datasheet.
  • Protein Length: Full Length (1-441 aa)
  • Research Areas: Neuroscience | Neurodegeneration | Alzheimer's Disease | Tangles & Tau
  • Storage Buffer: 1X PB pH7.4
  • Alternative Names: MAPT, intracellular neurofibrillary tangles, NFTs, paired helical filaments, PHFs, 2N4R
  • Cite This Product: Human Recombinant Tau-441 (2N4R) Wild-Type Monomers (Baculovirus/Sf9) (StressMarq Biosciences Inc. | Victoria BC CANADA | Catalog # SPR-496B)
  • Expression System: Baculovirus (Sf9)
  • Species Full Name: Human
  • Storage Temperature: -80ºC
  • Shipping Temperature: Dry Ice. Shipping note: Product will be shipped separately from other products purchased in the same order.
  • Scientific Background: Brain-specific tau isoforms vary in the number of N-terminal inserts and C- terminal repeat domains due to alternative splicing of exons; the 2N4R isoform of tau is expressed in adult brain yet is absent from the fetal brain (1). Tau (tubulin-associated unit) is normally located in the axons of neurons where it stabilizes microtubules. Tauopathies such as Alzheimer’s Disease (AD) are characterized by neurofibrillary tangles containing hyper-phosphorylated tau fibrils (2). Hyper-phosphorylated tau can be generated via expression in the Sf9/Baculovirus system, with up to 20 sites confirmed by mass spectrometry and Western Blots with phospho-specific antibodies(3). Sf9/Baculovirus-expressed Tau 2N4R will readily form oligomers and fibrils in the absence of heparin.
  • Certificate of Analysis: Protein certified >95% pure on SDS-PAGE & Nanodrop analysis, low endotoxin