| Field | Specification |
|---|---|
| Mfr No | |
| Alternative Names | Tau, 2N4R Tau, 2N3R Tau, pTau, MAPT, Neurofibrillary tangle protein, Tau-Human |
| Cellular Localization | |
| Clonality | |
| Concentration | |
| Host | |
| Immunogen | Tau 2N3R/4R peptide |
| Product Type | |
| Reactivity | |
| Shipping | |
| Storage | |
| Target |
Tau is a microtubule-associated protein encoded by the MAPT gene, which undergoes complex alternative splicing to produce six isoforms in the adult human brain. These isoforms differ by the presence of zero, one, or two N-terminal inserts (0N, 1N, 2N) and either three (3R) or four (4R) microtubule-binding repeat domains.
The 2N isoform, characterized by two N-terminal inserts, exists in both 2N3R and 2N4R variants. These isoforms are involved in modulating tau’s interaction with microtubules and other cellular components. The 3R/4R ratio is tightly regulated in the healthy brain but becomes disrupted in tauopathies. For example, Alzheimer’s disease (AD) exhibits a mixed 3R/4R tau pathology, while other disorders such as Pick’s disease or progressive supranuclear palsy show isoform-specific accumulation.
Tau 2N isoforms are of particular interest in neurodegenerative research due to their distinct expression patterns and potential contributions to disease-specific tau aggregation. Tools that selectively detect human 2N isoforms—such as isoform-specific antibodies like StressMarq's Tau 2N Antibody—are valuable for distinguishing pathological tau species and for developing targeted diagnostics and therapeutics. Our human Tau 2N3R/4R polyclonal antibody has demonstrated specificity to human 2N isoforms and does not detect rodent isoforms.
Understanding the role of Tau 2N in isoform imbalance and aggregation provides critical insight into the molecular mechanisms driving neurodegeneration.
A 1:1000 dilution of SPC-813 was sufficient for detection of Tau 2N3R/4R spliceforms (range tested 2ug – 0.063ug).
Cite this product varies by variant:
- SPC-813D — Size: 100 ug: Tau 2N Antibody (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D, RRID: AB_3716871)
- SPC-813D-A390 — Size: 100 ug: Tau 2N Antibody: ATTO 390 (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-A390, RRID: AB_3716872)
- SPC-813D-A488 — Size: 100 ug: Tau 2N Antibody: ATTO 488 (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-A488, RRID: AB_3716873)
- SPC-813D-A594 — Size: 100 ug: Tau 2N Antibody: ATTO 594 (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-A594, RRID: AB_3716874)
- SPC-813D-APC — Size: 100 ug: Tau 2N Antibody: APC (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-APC, RRID: AB_3716875)
- SPC-813D-BI — Size: 100 ug: Tau 2N Antibody: Biotin (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-BI, RRID: AB_3716876)
- SPC-813D-FITC — Size: 100 ug: Tau 2N Antibody: FITC (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-FITC, RRID: AB_3716877)
- SPC-813D-HRP — Size: 100 ug: Tau 2N Antibody: HRP (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-HRP, RRID: AB_3716878)
- SPC-813D-PCP — Size: 100 ug: Tau 2N Antibody: PerCP (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-PCP, RRID: AB_3716879)
- SPC-813D-RPE — Size: 100 ug: Tau 2N Antibody: RPE (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813D-RPE, RRID: AB_3716880)
- SPC-813S — Size: 12 ug: Tau 2N Antibody (StressMarq Biosciences | Victoria, BC CANADA, Catalog# SPC-813S, RRID: AB_3716871)
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
2. Spillantini, M. G., & Goedert, M. (2013). Tau pathology and neurodegeneration. The Lancet Neurology, 12(6), 609–622. DOI: 10.1016/S1474-4422(13)70090-5
3. Kovacs, G. G. (2017). Tauopathies. Handbook of Clinical Neurology, 145, 355–368. DOI: 10.1016/B978-0-12-802395-2.00025-3