Detects mouse LRRC32/GARP in direct ELISAs. In direct ELISAs, approximately 50% cross-reactivity
with recombinant human (rh) LRRC32 is observed and no cross-reactivity with
rhLRRC3, rhLRRC4, or rhNGL-3/LRRC4B is observed.
Monoclonal Rat IgG1 Clone # 725226
Chinese hamster ovary cell line CHO-derived recombinant mouse LRRC32/GARP Ile18-Asn628 Accession # NP_001106850
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Alexa Fluor 647
0.25-1 µg/106 cells
Mouse splenocytes stimulated with anti-CD3/anti-CD28, Recombinant Mouse IL-2 (Catalog # 402-ML), and Human TGF-beta 1 (Catalog # 100-B) to induce T regulatory cells (Tregs).
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.
Preparation and Storage
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.
Leucine-rich repeat protein 32 (LRRC32), also known as GARP (glycoprotein A repetitions predominant), is an 80 kDa type I transmembrane glycoprotein (1). Mature mouse LRRC32 consists of a 608 amino acid (aa) extracellular domain (ECD) that contains 22 leucine-rich repeats, a 21 aa transmembrane segment, and a 14 aa cytoplasmic domain (2-4). Within the ECD, mouse LRRC32 shares 80 and 94% aa sequence identity with human and rat LRRC32, respectively. LRRC32 is widely expressed during embryogenesis and on adult platelets (4, 5). Among T cells, it is selectively expressed on activated FOXP3+ regulatory T cells (Treg) (6-10). LRRC32 expression promotes the acquisition of a Treg phenotype including reduced cellular proliferation, reduced cytokine secretion, and the capacity to suppress the proliferation of naïve T cells (6-8). LRRC32 binds directly to the TGF-beta latency associated peptide (LAP) and tethers latent TGF-beta on the surface of activated Treg cells (9, 10). The presentation of TGF-beta on Tregs contributes to their ability to suppress naïve T cell proliferation (11).
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Wang, R. et al. (2009) Proc. Natl. Acad. Sci. 106:13439.
Probst-Kepper, M. et al. (2009) J. Cell. Mol. Med. 13:3343.
Tran, D.Q. et al. (2009) Proc. Natl. Acad. Sci. 106:13445.
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Vignali, D.A. et al. (2008) Nat. Rev. Immunol. 8:523.
Leucine-rich Repeat Containing 32/Glycoprotein A Repetitions Predominant
Entrez Gene IDs:
2615 (Human); 434215 (Mouse)
D11S833E; D11S833Eleucine-rich repeat-containing protein 32; GARP; GARPGarpin; Garpin; Glycoprotein A repetitions predominantgarpin; leucine rich repeat containing 32; LRRC32
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