Human B7-H2 APC-conjugated Antibody Summary
Accession # O75144
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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.
Detection of B7‑H2 in U937 Human Cell Line by Flow Cytometry. U937 human histiocytic lymphoma cell line was stained with Mouse Anti-Human B7-H2 APC-conjugated Monoclonal Antibody (Catalog # FAB165A, filled histogram) or isotype control antibody (Catalog # IC0041A, open histogram). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
- 12 months from date of receipt, 2 to 8 °C as supplied.
Human B7-H2, also called B7RP-1, B7h, LICOS, and GL50, is a 60 kDa member of the B7 family of immune costimulatory proteins, which includes B7-1, B7-2, B7-H1 (PD-L1), PD-L2, and B7-H3. B7 proteins are members of the immunoglobulin (Ig) superfamily, the extracellular domains contain 2 Ig-like domains and all members have short cytoplasmic domains. Family members share about 20‑25% amino acid identity. Within the extracellular domain, human B7-H2 shares 49% and 54% amino acid sequence identity with mouse and rat B7-H2, respectively. B7-H2 has been identified as the ligand for ICOS, a member of the CD28 family of costimulatory receptors. Human B7-H2 is a 309 amino acid (aa) protein with a putative 18 aa signal peptide, a 239 aa extracellular domain, an 18 aa transmembrane region, and a 33 aa cytoplasmic domain. Human B7-H2 is expressed constitutively on resting B cells, dendritic cells, and at low levels on monocytes. The B7-H2/ICOS interaction appears to play roles in T cell dependent B cell activation and Th differentiation.
- Coyle, A.J. and J.C. Gutierrez-Ramos (2001) Nat. Immunol. 2:203.
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- Brodie, D. et al. (2000) Curr. Biol. 10:333.
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- Swallow, M.M. et al. (1999) Immunity 11:423.
- Yoshinaga, S.K. et al. (1999) Nature 402:827.
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Gated on lymphocyte FSC-A and SSC-A populations. Singlets were further gated on by FSC-A/FSC-H doublet exclusion.
Buffer: 2% Human Serum, 0.5 mM EDTA in PBS