Human LILRB3/CD85a/ILT5 Alexa Fluor® 750-conjugated Antibody

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FAB1806S-100UG
R&D Systems Antibodies
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Human LILRB3/CD85a/ILT5 Alexa Fluor® 750-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human LILRB3/CD85a/ILT5 in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant human (rh) ILT1, rhILT2, rhILT3, rhILT4, rhILT6, rhILT7 or rhILT11 is observed.
Source
Monoclonal Mouse IgG2a Clone # 222821
Immunogen
Mouse myeloma cell line NS0-derived recombinant human LILRB3/CD85a/ILT5
Gly24-Glu443
Accession # AAB68668
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 750 (Excitation= 749 nm, Emission= 775 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
Human peripheral blood mononuclear cells (PBMCs)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

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Preparation and Storage

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: LILRB3/CD85a/ILT5

Immunoglobulin-Like Transcript 5 (ILT5), also known as Leukocyte Immunoglobulin-Like Receptor subfamily B (LILRB3), leukocyte immunoglobulin-Like Receptor 3 (LIR3) and CD85a, is an Ig-like receptor family member that is involved in immune regulation. ILT5 belongs to subfamily B whose members have cytoplasmic tails that contain Immunoreceptor Tyrosine-based Inhibitory Motifs (ITIMs) that inhibit signaling events via phosphatase SHP-1. The counterpart to subfamily B is subfamily A, whose members qualify as activating receptors that lack ITIMs, but signal through association with FcR gamma. ILTs share structural homology and chromosomal localization with the KIR family of receptors (1, 2). Mature ILT5 is a highly polymorphic 85‑95 kDa glycoprotein that consists of a 420 amino acid (aa) extracellular domain (ECD) with four Ig-like domains, a 21 aa transmembrane segment, and a 167 aa cytoplasmic domain with three ITIMs (3, 4). Alternate splicing generates an isoform with a 17 aa insertion in the juxtamembrane ECD. In mouse and rat, the LILRB3 gene encodes the PIR-B protein which has six Ig-like domains. Rodent PIR-B and human ILT5 share 55% aa sequence identity within common regions of their ECDs. Both PIR-B and ILT5 are receptors for S. aureus, and activation of these receptors by bacteria influences the innate immune response triggered by TLRs (4). ILT5 is expressed on the surface of peripheral monocytes, neutrophils, eosinophils, basophils, and mast cell progenitors but not on mature mast cells (5‑7). On basophils, cross-linking of ILT5 to the activating receptors ILT1/LIR7 or Fc epsilon RI inhibits the release of Histamine, Leukotriene C4, and IL-4 (6). On osteoclast precursors, ILT5 ligation inhibits RANKL or M-CSF induced differentiation (8). ILT5 is down‑regulated on macrophages in rheumatoid arthritis synovial tissue following successful treatment with DMARD anti-rheumatic drugs (9).

References
  1. Brown, D. et al. (2004) Tissue Antigens 64:215.
  2. Borges, L. and D. Cosman (2000) Cytokine Growth Factor Rev. 11:209.
  3. SwissProt Accession # O75022.
  4. Nakayama, M. et al. (2007) J. Immunol. 178:4250.
  5. Tedla, N. et al. (2003) Proc. Natl. Acad. Sci. 100:1174.
  6. Sloane, D.E. et al. (2004) Blood 104:2832.
  7. Tedla, N. et al. (2008) J. Leukoc. Biol. 83:334.
  8. Mori, Y. et al. (2008) J. Immunol. 181:4742.
  9. Huynh, O.A. et al. (2007) Rheumatology 46:742.
Entrez Gene IDs
11025 (Human)
Alternate Names
CD85 antigen-like family member A; CD85a antigen; CD85a; HL9Immunoglobulin-like transcript 5; ILT5; ILT-5; ILT5CD85a; Leukocyte immunoglobulin-like receptor 3; leukocyte immunoglobulin-like receptor subfamily B member 3; leukocyte immunoglobulin-like receptor, subfamily B (with TM and ITIM domains); LILRB3; LIR3; LIR3CD85A; LIR-3MGC138403; member 3; Monocyte inhibitory receptor HL9; PIRB

Product Datasheets

Product Specific Notices


This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.

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