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Human 4R Tau Antibody Pair - BSA and Azide free is a kit containing recombinant capture and detector antibodies in a carrier-free formulation for the measurement of Human 4R Tau.

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Images

Sandwich ELISA - Human 4R Tau Antibody Pair - BSA and Azide free (AB309260), expandable thumbnail

Key facts

Assay type

ELISA set

Reactive species

Human

Range

0.08 - 5 ng/mL

Reactivity data

Application

sELISA

Reactivity

Reacts

Dilution info
-
Notes

-

Target data

Function

Promotes microtubule assembly and stability, and might be involved in the establishment and maintenance of neuronal polarity (PubMed:21985311). The C-terminus binds axonal microtubules while the N-terminus binds neural plasma membrane components, suggesting that tau functions as a linker protein between both (PubMed:21985311, PubMed:32961270). Axonal polarity is predetermined by TAU/MAPT localization (in the neuronal cell) in the domain of the cell body defined by the centrosome. The short isoforms allow plasticity of the cytoskeleton whereas the longer isoforms may preferentially play a role in its stabilization.

Alternative names

Human 4R Tau Antibody Pair - BSA and Azide free is a kit containing recombinant capture and detector antibodies in a carrier-free formulation for the measurement of Human 4R Tau.

Key facts

Assay type

ELISA set

Reactive species

Human

Range

0.08 - 5 ng/mL

Assay Platform

Reagents

Storage

Shipped at conditions

Blue Ice

Appropriate short-term storage conditions

+4°C

Appropriate long-term storage conditions

+4°C

Storage information

+4°C

Notes

Human 4R Tau Antibody Pair - BSA and Azide free (ab309260) is a matched pair of unconjugated recombinant rabbit monoclonal capture and detection antibodies used to quantify human 4R Tau in sandwich ELISAs and many other pair-based applications.

Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

The pair can be used in variety of assays and platforms including but not limited to:

  • Sandwich ELISA
  • FRET/TR-FRET/HTRF
  • Meso Scale Discovery® (MSD®)
  • Bead-based assays
  • AlphaLISA®/AlphaScreen®
  • DELFIA® immunoassays
  • Simoa® and Single Molecule Counting (SMC™) immunoassays
  • Multiplex

Our antibody pairs are supplied in a carrier-free format that is conjugation-ready:

  • Buffer free of BSA, sodium azide, and glycerol for higher conjugation efficiency.
  • Concentration of ~1 mg/ml as measured by the protein A280 method.

We can label antibodies for you: get in touch today to discuss how we can help accelerate your assay development with custom conjugation services.

Pairs are screened in biological samples, including plasma and serum, to ensure specificity in complex samples.

Please note:

The recommended antibody orientation is based on internal optimization in sandwich ELISA. Antibody orientation is assay dependent and needs to be optimized for each assay type.

The range provided for this antibody pair is based on initial sandwich ELISA validation data using recombinant protein. Performance and range of the antibody pair will depend on the specific characteristics of your assay, including standard protein selection.

We guarantee the product works in sandwich ELISA, but we do not guarantee the sensitivity or dynamic range of the antibodies in other assays.

Antibody properties:

Capture antibody: recombinant rabbit monoclonal (unconjugated) – 100 µg

Detector antibody: recombinant rabbit monoclonal (unconjugated) - 100 µg

Concentration: ~1 mg/ml

Storage buffer: 100% PBS

Form: Liquid

Isotype: IgG

Recombinant monoclonal antibodies offer several advantages including:

- High batch-to-batch consistency and reproducibility

- Improved sensitivity and specificity

- Long-term security of supply

- Animal-free production

Meso Scale Discovery and MSD are registered trademarks of Meso Scale Diagnostics, LLC.

AlphaLISA, AlphaScreen, and DELFIA are registered trademarks of PerkinElmer, Inc.

Simoa is a registered trademark of Quanterix, Inc.

SMC is a registered trademark of Merck KGaA, Darmstadt, Germany.

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

4R Tau also known as the 4-repeat tau protein plays a significant role in the stabilization of microtubules in neurons. This protein appears mainly in the human central nervous system where it assists in axonal structure and transport. 4R Tau has a molecular weight of approximately 65 kDa. The expression of 4R Tau occurs mostly in neurons although its presence can also be detected in other cell types within the brain.

Biological function summary

4R Tau is a component essential for the assembly and maintenance of neuronal microtubules. It regulates microtubule dynamics by binding and enhancing their stability important for maintaining cellular and axonal integrity. In mature neurons 4R Tau exists as part of a complex with tubulin forming an important element for axonal morphology. Its function extends further into modulating neuronal growth and signal transmission which directly impacts neural connectivity.

Pathways

4R Tau is integral within the microtubule-associated protein tau (MAPT) signaling pathways. It interacts with other proteins that influence microtubule assembly and stability such as tubulin and MAP2 playing a significant role in cytoskeletal development. Additionally 4R Tau is involved in the protein folding pathways regulated by chaperones like Heat Shock Protein 70 (Hsp70) which affect its aggregation and function within neural cells.

Associated diseases and disorders

4R Tau is closely associated with neurodegenerative conditions such as Alzheimer's disease and frontotemporal dementia. Aberrant phosphorylation and aggregation of 4R Tau drive pathological tau tangles which disrupt neural networks and lead to cognitive decline. In Alzheimer’s the protein's dysfunction is linked with amyloid-beta peptide which accelerates tau pathology progression. Similarly in frontotemporal dementia 4R Tau's abnormal activity is influenced by interactions with proteins such as TDP-43 highlighting its central role in these neurodegenerative disorders.

Product promise

We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.

In the unlikely event of one of our products not working as expected, you are covered by our product promise.

Full details and terms and conditions can be found here:
Terms & Conditions.

1 product image

  • Sandwich ELISA - Human 4R Tau Antibody Pair - BSA and Azide free (ab309260), expandable thumbnail

    Sandwich ELISA - Human 4R Tau Antibody Pair - BSA and Azide free (ab309260)

    Sandwich ELISA of ab309260 with the capture antibody dilution at 2 µg/mL and detector antibody dilution at 0.5 µg/mL.

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Product protocols

For this product, it's our understanding that no specific protocols are required. You can:

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

For licensing inquiries, please contact partnerships@abcam.com