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Immunoglobulin-Like Transcript 4 (ILT4, CD85d) (PE)

Cat no: I7502-80A

Supplier: United States Biological
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The immunoglobulin-like transcript (ILT) family of activating and inhibitory type immunoreceptors are expressed on many leukocyte subsets and function in the regulation of immune responses (1-3). This family was also named leukocyte Ig-like receptors (LIR) and monocyte/macrophage Ig-like receptors (MIR). ILTs share significant homology with killer cell Ig-like receptors (KIR). The ILT genes are located on human chromosome 19q13.4 in the leukocyte receptor complex that also includes the genes encoding KIRs (4). With the exception of ILT6, which is a soluble molecule, all ILT family members are type I transmembrane proteins having two or four extracellular Ig-like domains (2, 3). One subset of the ILT receptors (referred to as subfamily B of the LIRs) has long cytoplasmic tails containing immunoreceptor tyrosine-based inhibitory motifs (ITIMs) that inhibit signaling events by recruiting SH2-containing protein tyrosine phosphatase-1. Another subset of the ILT receptors (referred to as subfamily A of the LIRs) contains activating receptors with short cytoplasmic regions that lack signal transduction motifs. These receptors contain a basic arginine residue within their transmembrane domains, which allows association with Fcg R, an immunoreceptor tyrosine-based activation motif (ITAM)-bearing signal adapter protein (1-3). ILT-4, also known as Leukocyte Immunoglobulin-like Receptor 2 (LIR-2) and Leukocyte Immunoglobulin-Like Receptor subfamily B, member 2 (LILRB2), is an Ig superfamily inhibitory receptor expressed primarily on monocytes, macrophages, and dendritic cells (DC). Binding of HLA-G to ILT4 on DC alters DC maturation, rendering them tolerogenic. Applications: Suitable for use in Flow Cytometry. Other applications not tested. Recommended Dilution: Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4 degrees C for short-term only. For long-term storage and to avoid repeated freezing and thawing, add sterile glycerol (40-50%), aliquot and store at -20 degrees C. Aliquots are stable for at least 6 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Catalogue number: I7502-80A
Reactivities: Human
Hosts: Mouse
Applications: Flow Cytometry
Size: 100Tests
Form: Supplied as a liquid in saline, 0.5% BSA, 0.1% sodium azide. Labeled with R-Phycoerythrin (PE).
P type: Mab
Isotype: IgG2a
Purity: Purified by Protein A affinity chromatography.
References: 1. Allen, D. et al., 2000, Immunobiol. 202:34. 2. Colonna, M. et al., 1999, J. Leukocyte Biol. 66:375. 3. Borges, L. and D. Cosman, 2000, Cytokine Growth Factor Rev. 11:209.
Additional info: Recognizes human Immunoglobulin-Like Transcript 4.

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