Ultra-LEAF™ Purified anti-human/mouse/rat MR1 Antibody

Product Details

Verified Reactivity

Human, Mouse, Rat

Reported Reactivity

Cow

Antibody Type

Monoclonal

Host Species

Mouse

Immunogen

Soluble complexes of MR1 ectodomain and B2M.

Formulation

0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative.

Endotoxin Level

Less than 0.01 EU/µg of the protein (< 0.001 ng/µg of the protein) as determined by the LAL test.

Preparation

The Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.

Concentration

The antibody is bottled at the concentration indicated on the vial, typically between 2 mg/mL and 3 mg/mL. Older lots may have also been bottled at 1 mg/mL. To obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.

Storage & Handling

The antibody solution should be stored undiluted between 2°C and 8°C. This Ultra-LEAF™ solution contains no preservative; handle under aseptic conditions.

Application

FC - Quality tested
ELISA, IP, Block - Reported in the literature, not verified in house

Recommended Usage

Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 0.25 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.

Application Notes

Additional reported applications for the relevant formats include: blocking MR1-dependent activation of MAIT hybridomas, clones, or MAIT TCR-transduced cell lines^1-6, detection of folded MR1 conformers^3,7, and immunoprecipitation of MR1 from cell lysates⁷.

Application References

(PubMed link indicates BioLegend citation)

1. Young MH, et al. 2013. PLoS One. 8:e53789. (Block)
2. Leeansyah E, et al. 2013. Blood 121:1124. (Block)
3. Kjer-Nielsen L, et al. 2012. Nature 491:717. (Block, ELISA)
4. Reantragoon R, et al. 2012. J. Exp. Med. 209:761. (Block, FC)
5. Gold MC, et al. 2010. PLoS Biol. 8:e1000407. (Block, FC)
6. Huang S, et al. 2009. Proc. Natl. Acad. Sci. USA 106:8290. (Block, FC)
7. Huang S, et al. 2005. J. Biol. Chem. 280:21183. (IP, ELISA, FC)

Product Citations

1. Mabire M, et al. 2023. Nat Commun. 14:1830. PubMed
2. Sugimoto C, et al. 2022. Elife. 11:. PubMed

RRID

AB_2801000 (BioLegend Cat. No. 361109)
AB_2801000 (BioLegend Cat. No. 361110)

Antigen Details

Structure

Member of the MHC class I family, 1 Ig-like C1-type domain, forms heterodimer with B-2 Microglobulin.

Distribution

MR1 transcripts are ubiquitously expressed, but its expression in the cell surface seems to be ligand-dependent.

Function

Antigen presentation, required for development and expansion of the mucosal-associated invariant T (MAIT) cells.

Ligand/Receptor

α-mannosyl ceramide derivatives, 6-formyl pterin, derivatives from bacterial riboflavin biosynthetic pathway).

Biology Area

Immunology, Innate Immunity

Molecular Family

MHC Antigens

Antigen References

1. Gold MC and Lewinsohn DM. 2013. Nat. Rev. Microbiol. 11:14.
2. Young MH and Gapin L. 2013. Cell Res. 23:460.
3. Gold MC, et al. 2013. Mucosal Immunol. 6:35.
4. Meierovics A, et al. 2013. Proc. Natl. Acad. Sci. USA. 110:E3119.

Gene ID

3140 View all products for this Gene ID 15064 View all products for this Gene ID 25119 View all products for this Gene ID

UniProt

View information about MR1 on UniProt.org

Documentation

• Technical Data Sheet (pdf)
• Certificate of Analysis
• Safety Data Sheet

Reviews

Related Protocols

• Cell Surface Flow Cytometry Staining Protocol

Related Pages & Pathways

Related FAQs

Do you guarantee that your antibodies are totally pathogen free?

BioLegend does not test for pathogens in-house aside from the GoInVivo™ product line. However, upon request, this can be tested on a custom basis with an outside, independent laboratory.

Does BioLegend test each Ultra-LEAF™ antibody by functional assay?

No, BioLegend does not test Ultra-LEAF™ antibodies by functional assays unless otherwise indicated. Due to the possible complexities and variations of uses of biofunctional antibodies in different assays and because of the large product portfolio, BioLegend does not currently perform functional assays as a routine QC for the antibodies. However, we do provide references in which the antibodies were used for functional assays and we do perform QC to verify the specificity and quality of the antibody based on our strict specification criteria.

Does BioLegend test each Ultra-LEAF™ antibody for potential pathogens?

No, BioLegend does not test for pathogens in-house unless otherwise indicated.  However, we can recommend an outside vendor to perform this testing as needed.

Have you tested this Ultra-LEAF™ antibody for in vivo or in vitro applications?

We don't test our antibodies for in vivo or in vitro applications unless otherwise indicated. Depending on the product, the TDS may describe literature supporting usage of a particular product for bioassay. It may be best to further consult the literature to find clone specific information.

Other Formats

Certificate of Analysis