Recombinant Mouse ICOS Fc Chimera Protein, CF

Catalog # Availability Size / Price Qty
168-CS-100
R&D Systems Recombinant Proteins and Enzymes
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Citations (3)
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Recombinant Mouse ICOS Fc Chimera Protein, CF Summary

Product Specifications

Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<0.1 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its binding ability in a functional ELISA. Immobilized rmICOS/Fc Chimera at 1 µg/mL (100 µL/well) can bind biotinylated rhB7-H2/Fc Chimera with a linear range of 0.156-10 ng/mL.
Optimal dilutions should be determined by each laboratory for each application.
Source
Spodoptera frugiperda, Sf 21 (baculovirus)-derived mouse ICOS protein
Mouse ICOS
(Glu21-Leu142)
Accession # NP_059508
IEGRMD Human IgG1
(Pro100-Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Analysis
Glu21
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
44 kDa (monomer)
SDS-PAGE
47 kDa, reducing conditions

Product Datasheets

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168-CS

Carrier Free

What does CF mean?

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.

What formulation is right for me?

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.

168-CS

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Reconstitution Calculator

Reconstitution Calculator

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Background: ICOS

Mouse ICOS (inducible co-stimulator), also called AILIM (activiation-inducible lymphocyte immunomediatory molecule) and CRP-1 (CD28-related protein-1), is a member of the growing CD28 family of immune costimulatory receptors. Other family members are CD28, CTLA-4 and PD-1. Mouse ICOS is a homodimeric type I transmembrane protein consisting of 200 amino acids (aa) with a putative 20 aa signal sequence, a 122 aa extracellular domain, a 23 aa transmembrane region, and a 35 aa cytoplasmic domain. ICOS shares approximately 39% amino acid similarity with CD 28 and CTLA-4. Mouse and human ICOS share approximately 72% amino acid identity. ICOS is expressed on most CD45RO+ cells. ICOS expression is up-regulated within approximately 24 - 48 hours of activation on Th primed cells. B7-H2, a member of the B7 family of costimulatory ligands, has been identified as the ICOS ligand. The B7-H2/ICOS interaction appears to play roles in T cell dependent B cell activation and Th differentiation.

References
  1. Coyle, A.J. and J.C. Gutierrez-Ramos (2001) Nat. Immunol. 2:203.
  2. Mages, H.W. et al. (2000) Eur. J. Immunol. 30:1040.
  3. Yoshinaga, S.K. et al. (1999) Nature 402:827.
  4. Hutloff, A. et al. (1999) Nature 397:263.
  5. Aicher, A. et al. (2000) J. Immunol. 164:4689.
  6. Coyle, A.J. et al. (2000) Immunity 13:95.
  7. Gonzalo, J.A. et al. (2001) J. Immunol. 166:1.
Long Name
Inducible Co-stimulator
Entrez Gene IDs
29851 (Human); 54167 (Mouse); 102116512 (Cynomolgus Monkey)
Alternate Names
Activation-inducible lymphocyte immunomediatory molecule; AILIM; AILIMCD278; CD278 antigen; CD278; CRP-1; CVID1; ICOS; inducible costimulator; inducible T-cell costimulator; inducible T-cell co-stimulator; MGC39850

Citations for Recombinant Mouse ICOS Fc Chimera Protein, CF

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

3 Citations: Showing 1 - 3
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  1. Role of endocytosis and trans-endocytosis in ICOS costimulator-induced downmodulation of the ICOS Ligand
    Authors: L Aragoneses, M Montes-Cas, G Ojeda, L García-Par, Y Arimura, J Yagi, U Dianzani, P Portolés, JM Rojo
    Journal of leukocyte biology, 2021-02-02;0(0):.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Bioassay
  2. Mapping of the ICOS binding surface of murine B7h using an unbiased, cellular library of B7h mutants created by cyclical packaging rescue.
    Authors: Bakkour S, Sha WC
    J. Immunol. Methods, 2008-02-05;332(1):151-61.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Flow Cytometry
  3. BTNL2, a butyrophilin/B7-like molecule, is a negative costimulatory molecule modulated in intestinal inflammation.
    Authors: Arnett HA, Escobar SS, Gonzalez-Suarez E, Budelsky AL, Steffen LA, Boiani N, Zhang M, Siu G, Brewer AW, Viney JL
    J. Immunol., 2007-02-01;178(3):1523-33.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Flow Cytometry

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