Human ICOS Biotinylated Antibody

Catalog # Availability Size / Price Qty
BAF169
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Human ICOS Biotinylated Antibody Summary

Species Reactivity
Human
Specificity
Detects human ICOS in Western blots. In Western blots, approximately 25% cross-reactivity with recombinant mouse ICOS is observed.
Source
Polyclonal Goat IgG
Purification
Antigen Affinity-purified
Immunogen
Mouse myeloma cell line NS0-derived recombinant human ICOS
Glu21-Phe141
Accession # Q9Y6W8
Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Label
Biotin

Applications

Recommended Concentration
Sample
Western Blot
0.1 µg/mL
Recombinant Human ICOS Fc Chimera (Catalog # 169-CS)

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.

Reconstitution Calculator

Reconstitution Calculator

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Preparation and Storage

Reconstitution
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Availability
Size / Price
Qty
RB01
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.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: ICOS

Inducible costimulator (ICOS), 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. Human ICOS is a homodimeric type I transmembrane protein consisting of 199 amino acids (aa) with a putative 20 aa signal sequence, a 121 aa extracellular domain, a 23 aa transmembrane region, and a 35 aa cytoplasmic domain. ICOS shares approximately 39% amino acid similarity with CD28 and CTLA-4. Human and mouse 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. Aicher, A. et al. (2000) J. Immunol. 164:4689.
  2. Coyle, A.J. et al. (2000) Immunity 13:95.
  3. Coyle, A.J. and J.C. Gutierrez-Ramos (2001) Nat. Immunol. 2:203.
  4. Gonzalo, J.A. et al. (2001) J. Immunol. 166:1.
  5. Hutloff, A. et al. (1999) Nature 397:263.
  6. Mages, H.W. et al. (2000) Eur. J. Immunol. 30:1040.
  7. Yoshinaga, S.K. et al. (1999) Nature 402:827.
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

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