Human ICOS Alexa Fluor™ Plus 488-conjugated Antibody
R&D Systems, part of Bio-Techne | Catalog # AF169AFP488
Conjugate
Catalog #
Key Product Details
Species Reactivity
Human
Applications
Immunohistochemistry, Western Blot
Label
Alexa Fluor Plus 488 (Excitation = 493 nm, Emission = 518 nm)
Antibody Source
Polyclonal Goat IgG
Product Specifications
Specificity
Detects human ICOS in direct ELISAs and Western blots. In direct ELISAs, approximately 15% cross-reactivity with recombinant mouse ICOS is observed.
Clonality
Polyclonal
Host
Goat
Isotype
IgG
Applications for Human ICOS Alexa Fluor™ Plus 488-conjugated Antibody
Application
Recommended Usage
Immunohistochemistry
Optimal dilution of this antibody should be experimentally determined.
Western Blot
Optimal dilution of this antibody should be experimentally determined.
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
- Aicher, A. et al. (2000) J. Immunol. 164:4689.
- Coyle, A.J. et al. (2000) Immunity 13:95.
- Coyle, A.J. and J.C. Gutierrez-Ramos (2001) Nat. Immunol. 2:203.
- Gonzalo, J.A. et al. (2001) J. Immunol. 166:1.
- Hutloff, A. et al. (1999) Nature 397:263.
- Mages, H.W. et al. (2000) Eur. J. Immunol. 30:1040.
- Yoshinaga, S.K. et al. (1999) Nature 402:827.
Long Name
Inducible Co-stimulator
Alternate Names
AILIM, CD278, CRP-1
Gene Symbol
ICOS
UniProt
Additional ICOS Products
Product Specific Notices for Human ICOS Alexa Fluor™ Plus 488-conjugated Antibody
This product is provided under an intellectual property license from Life Technologies Corporation. The transfer of this product is conditioned on the buyer using the purchased product solely in research conducted by the buyer, excluding contract research or any fee for service research, and the buyer must not (1) use this product or its components for (a) diagnostic, therapeutic or prophylactic purposes; (b) testing, analysis or screening services, or information in return for compensation on a per-test basis; or (c) manufacturing or quality assurance or quality control, and/or (2) sell or transfer this product or its components for resale, whether or not resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5781 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@thermofisher.com.
For research use only
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