{"product_id":"tau-352-fetal-0n3r-wild-type-pre-formed-fibrils-bhp11901220","title":"Tau-352 (fetal 0N3R) Wild-Type Pre-formed Fibrils","description":"\u003ch2\u003eBackground\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eTau\u003c\/strong\u003e is provided as a recombinant protein reagent for \u003cstrong\u003eresearch use only\u003c\/strong\u003e. It is commonly used as a defined molecular component in biochemical and cell-free systems where controlled protein input supports mechanistic study and assay development.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProtein identity context:\u003c\/strong\u003e Tau (source species: Human; native 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).\u003c\/p\u003e\u003cp\u003eHuman Recombinant Tau-352 (fetal 0N3R) Wild-Type PFFs\u003c\/p\u003e\u003cp\u003eAlzheimer’s Disease (AD) is the most common neurodegenerative disease, affecting 10% of seniors over the age of 65 (1). 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 paired helical filaments (PHFs). Brain-specific tau isoforms vary in the number of N-terminal inserts and C- terminal repeat domains due to alternative splicing of exons; only the shortest isoform of tau, 0N3R, is expressed in the fetal brain during neurogenesis (2). Three-repeat (3R) isoforms have been shown to be more prone than four-repeat (4R) isoforms to form oligomers in vitro (3). The β-sheet core of Tau 0N3R fibrilized using heparin differs from all other tau fibril structures known to date (4).\u003c\/p\u003e\u003ch2\u003eBiological significance and function\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eTau\u003c\/strong\u003e is used in RUO research to interrogate molecular mechanisms, interaction networks, and pathway-linked phenotypes in experimental systems. This protein is frequently discussed in research themes such as \u003cstrong\u003eAlzheimer's Disease\u003c\/strong\u003e and \u003cstrong\u003eAxon Markers\u003c\/strong\u003e.\u003c\/p\u003e\u003ch2\u003eMolecular characteristics\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eMolecular characteristics:\u003c\/strong\u003e Key molecular attributes can influence binding behavior, stability, and assay background—especially for multimeric, disulfide-rich, or PTM-dependent proteins.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSource species:\u003c\/strong\u003e Human\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCellular localization (native):\u003c\/strong\u003e 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein length:\u003c\/strong\u003e Full Length (1-352 aa)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein size:\u003c\/strong\u003e 37 kDa\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e \u0026gt;95%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpression system:\u003c\/strong\u003e E. coli\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurification:\u003c\/strong\u003e Ion-exchange Purified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage buffer:\u003c\/strong\u003e 10 mM Hepes pH 7.4, 100 mM NaCl\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAffinity tag (sequence-indicated):\u003c\/strong\u003e GST-tag\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePost-translational considerations:\u003c\/strong\u003e E. coli expression typically yields a non-glycosylated recombinant form. This is often appropriate for intracellular enzymes and many binding studies, but extracellular ligands\/receptors or disulfide-rich proteins may show activity or stability differences when PTMs are required.\u003c\/p\u003e\u003ch2\u003eExpression and purification strategy\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eExpression system:\u003c\/strong\u003e E. coli. Expression host choice can influence folding and PTM state, which may affect binding or activity depending on protein class.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePurification strategy:\u003c\/strong\u003e Ion-exchange Purified. Purification method and formulation help determine sample homogeneity and background in downstream biochemical assays.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTagging:\u003c\/strong\u003e The provided sequence suggests a \u003cstrong\u003eGST-tag\u003c\/strong\u003e, which can simplify capture\/immobilization workflows in binding assays. Tag status can also influence complex formation in some contexts.\u003c\/p\u003e\u003ch2\u003eResearch interpretation\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eResearch interpretation:\u003c\/strong\u003e Recombinant protein reagents can support controlled experiments such as reconstitution of molecular interactions, quantitative calibration, and mechanistic perturbation studies with defined inputs. Interpreting outcomes typically benefits from pairing the primary readout with orthogonal markers that report on pathway state, localization, and complex formation.\u003c\/p\u003e","brand":"StressMarq Biosciences Inc.","offers":[{"title":"100 ug","offer_id":53016293802349,"sku":"SPR-491B","price":440.0,"currency_code":"USD","in_stock":true},{"title":"100 ug x 2","offer_id":53016293835117,"sku":"SPR-491C","price":790.0,"currency_code":"USD","in_stock":true},{"title":"100 ug x 5","offer_id":53016293867885,"sku":"SPR-491E","price":1640.0,"currency_code":"USD","in_stock":true},{"title":"500 ug (@5 mg\/ml)","offer_id":53016293900653,"sku":"SPR-491XE","price":1640.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/SPR-491_Tau-352-fetal-0N3R-Wild-Type-Pre-formed-Fibrils-Protein-TEM-1.png?v=1770644828","url":"https:\/\/www.ebiohippo.com\/products\/tau-352-fetal-0n3r-wild-type-pre-formed-fibrils-bhp11901220","provider":"BioHippo","version":"1.0","type":"link"}