Recombinant Cynomolgus Monkey Fc gamma RI/CD64 Protein, CF
Recombinant Cynomolgus Monkey Fc gamma RI/CD64 Protein, CF Summary
Product Specifications
Val11-Pro288, with a C-terminal 6-His tag
Analysis
Product Datasheets
Carrier Free
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
9239-FC
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| Reconstitution | Reconstitute at 200 μg/mL in PBS. |
| Shipping | The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Scientific Data
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When Human IgG is immobilized at 0.5 μg/mL, 100 μL/well, Recombinant Cynomolgus Monkey Fc gamma RI/CD64 (Catalog # 9239-FC) binds with an ED50 of 1-5 ng/mL.
Reconstitution Calculator
Background: Fc gamma RI/CD64
Receptors for the Fc region of IgG (Fc gamma Rs) are members of the Ig superfamily that function in the activation or inhibition of immune responses such as degranulation, phagocytosis, ADCC (antibody-dependent cellular toxicity), cytokine release, and B cell proliferation (1, 2). The Fc gamma Rs have been divided into three classes based on close relationships in their extracellular domains; these groups are designated Fc gamma RI/CD64, Fc gamma RII/CD32, and Fc gamma RIII/CD16. Each group may be encoded by multiple genes and exist in different isoforms depending on species and cell type. The CD64 proteins are high affinity receptors (~10-8 -10-9 M) capable of binding monomeric IgG, whereas the CD16 and CD32 proteins bind IgG with lower affinities (~10-6-10-7 M) and only recognize IgG aggregates surrounding multivalent antigens (1, 3). Mature cynomolgus Fc gamma RI consists of a 277 amino acid (aa) extracellular domain (ECD) with three Ig-like domains, a 21 aa transmembrane segment, and a 61 aa cytoplasmic domain. Within the ECD, cynomolgus Fc gamma RI shares 95%, 72%, and 66% aa sequence identity with human, mouse, and rat Fc gamma RI, respectively. It binds cynomolgus IgG subclasses 1-4 as well as human IgG 1, 3, and 4 (4, 5). It delivers an activating signal via the associated Fc R gamma accessory chain (6). Fc gamma RI is expressed constitutively on monocytes, macrophages, and monocyte-derived dendritic cells and can be induced on neutrophils, eosinophils, mast cells, and glomerular mesangial cells (1, 3). Its expression is up-regulated during bacterial infections and sepsis.
- Chenoweth, A.M. et al. (2015) Immunol. Rev. 268:175.
- Ravetch, J. and S. Bolland (2001) Annu. Rev. Immunol. 19:275.
- Takai, T. (2002) Nature Rev. Immunol. 2:580.
- Warncke, M. et al. (2012) J. Immunol. 188:4405.
- Nguyen, D.C. et al. (2014) Immunogenetics 66:361.
- van Vugt, M.J. et al. (1996) Blood 87:3593.
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