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MR1 / Major histocompatibility complex, class I-related Antibody [MR1/7578]

In Stock
Catalog Number Formulation Size Price
3140-MSM2-P0
Purified Ab with BSA and Azide at 200ug/ml
20ug
$229.00
3140-MSM2-P1
Purified Ab with BSA and Azide at 200ug/ml
100ug
$519.00
3140-MSM2-P1ABX
Purified Ab WITHOUT BSA and Azide at 1.0mg/ml
100ug
$519.00
Flat Rate Domestic: $75 | Orders outside the US - Contact Us for Order Information | Ships next business day
MR1 / Major histocompatibility complex, class I-related Antibody

Formalin-fixed, paraffin-embedded human kidney stained with MR1 Mouse Monoclonal Antibody (MR1/7578). HIER: Tris/EDTA, pH9.0, 45min. 2°C: HRP-polymer, 30min. DAB, 5min.

Applications & Dilutions

Applications Tested Dillution Protocol Note
Immunohistochemistry (IHC)
1-2ug/ml
IHC Protocol
30 min at RT. Staining of formalin-fixed tissues requires heating tissue sections in 10mM Tris with 1mM EDTA, pH 9.0, for 45 min at 95°C followed by cooling at RT for 20 minutes

Summary

MR1 (major histocompatibility complex, class I-related), also known as HLALS, is a 341 amino acid single-pass membrane protein that localizes to the endoplasmic reticulum, as well as to the extracellular side of the cell membrane, and contains one Ig-like C1-type domain. Expressed ubiquitously, MR1 exists as a heterodimer with b-2-Microglobulin and plays an important role in antigen presentation, specifically in the development and expansion of mucosalassociated invariant T cells (MAITs). MAITs are located in the gut and are involved in monitoring flora levels, as well as in conveying distress signals to other areas of the body, indicating a role for MR1 in proper digestion and immune system function. MR1 exists as four alternatively spliced isoforms and is encoded by a gene which maps to human chromosome 1.

Product Properties & Targets

Antibody Type
Mouse Monoclonals
Host
Mouse
Applications
Immunohistochemistry
Species Reactivity
Human
Isotype / Light Chain
IgG2 / Kappa
Cellular Localization
Secreted. Cell membrane.
Gene Name
MR1
Positive Control
Human kidney|placenta or tonsil.
Immunogen
Recombinant fragment (around aa50-250) of human MR1 protein (exact sequence is proprietary)
Alternate Names
Major histocompatibility complex class I-related gene protein, Class I histocompatibility antigen-like protein, Class I histocompatibility antigen like protein; HLALS; Major histocompatibility complex class I like sequence; Major histocompatibility complex class I related isoform CRA a; MHC class I related gene protein; MHC class I related protein 1 isoform B; MR1B; MR1C

Database Links

Entrez Gene ID
3140
SwissProt
Q95460

Additional Information

Clone
MR1/7578
Chromosome Location
1q25.3
Mol. Weight of Antigen
39kDa

Related Antibodies

View All MR1 Antibodies

Functions

  • Antigen-presenting molecule specialized in displaying microbial pyrimidine-based metabolites to alpha-beta T cell receptors (TCR) on innate-type mucosal-associated invariant T (MAIT) cells (PubMed:23051753, PubMed:26795251, PubMed:12794138, PubMed:19416870, PubMed:22692454, PubMed:23846752). In complex with B2M preferentially presents riboflavin-derived metabolites to semi-invariant TRAV1-2 TCRs on MAIT cells, guiding immune surveillance of the microbial metabolome at mucosal epithelial barriers (PubMed:26795251, PubMed:24695216, PubMed:20581831). Signature pyrimidine-based microbial antigens are generated via non-enzymatic condensation of metabolite intermediates of the riboflavin pathway with by-products arising from other metabolic pathways such as glycolysis. Typical potent antigenic metabolites are 5-(2-oxoethylideneamino)-6-D-ribitylaminouracil (5-OE-RU) and 5-(2-oxopropylideneamino)-6-D-ribitylaminouracil (5-OP-RU), products of condensation of 5-amino-6-D-ribityaminouracil (5-A-RU) with glyoxal or methylglyoxal by-products, respectively (PubMed:24695216). May present microbial antigens to various TRAV1-2-negative MAIT cell subsets, providing for unique recognition of diverse microbes, including pathogens that do not synthesize riboflavin (PubMed:27527800, PubMed:31113973). Upon antigen recognition, elicits rapid innate-type MAIT cell activation to eliminate pathogenic microbes by directly killing infected cells (PubMed:24695216, PubMed:27527800, PubMed:23846752). During T cell development, drives thymic selection and post-thymic terminal differentiation of MAIT cells in a process dependent on commensal microflora (By similarity). Acts as an immune sensor of cancer cell metabolome (PubMed:31959982). May present a tumor-specific or -associated metabolite essential for cancer cell survival to a pan-cancer TCR consisting of TRAV38.2-DV8*TRAJ31 alpha chain paired with a TRBV25.1*TRBJ2.3 beta chain on a non-MAIT CD8-positive T cell clone (MC.7.G5), triggering T cell-mediated killing of a wide range of cancer cell types (PubMed:31959982).

Key References

  • Hashimoto, K., et al. 1995. A gene outside the human MHC related to classical HLA class I genes. Science 269: 693-695
  • 4

PubMed Links

Storage & Stability

Antibody with azide - store at 2 to 8°C. Antibody without azide - store at -20 to -80°C.Antibody is stable for 24 months. Non-hazardous. No MSDS required.

Limitations

This antibody is available for research use only and is not approved for use in diagnosis.

Supplied as

200ug/ml of Ab purified from Bioreactor Concentrate by Protein A/G. Prepared in 10mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0mg/ml.

Warranty

There are no warranties, expressed or implied, which extend beyond this description. Company is not liable for any personal injury or economic loss resulting from this product.

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