|Flow Cytometry (Flow)||10 µL/1x10^6 cells|
|Species reactivity||Human, Non-human primate|
|Host / Isotype||Mouse / IgG1|
|Immunogen||DC188.8.131.52 murine T cell hybridoma transfected with human CD28 cDNA.|
|Excitation/Emission Profile||View spectra|
|Storage buffer||PBS with 0.2% BSA|
|Contains||15mM sodium azide|
|Storage conditions||4° C, store in dark, DO NOT FREEZE!|
CD28 antigen is a 44 kDa disulfide linked homodimeric T cell specific surface glycoprotein. CD28 is a cell adhesion molecule of the immunoglobulin superfamily which is constitutively expressed on most peripheral blood T lymphocytes. Moreover, CD28 is the critical T cell costimulatory receptor that provides the cell the important second activation signal by binding CD80 and CD86 which are expressed by antigen presenting cells. In addition to its co-stimulation role, CD28 functions by preventing T cells from entering an anergic-hyporesponsive state or from undergoing premature apoptotic cell death. In murine peripheral lymphoid organs and in the blood, all CD4+ and CD8+ T cells express CD28. In the thymus, CD28 expression is highest on immature CD3-, CD8+ and CD4+8+ cells, and on CD4-8- cells that express alpha/beta and gamma/delta TCR. The level of CD28 on mature CD4+ and CD8+ alpha/beta TCR+ thymocytes is two- to fourfold lower than on the immature cells. Diseases associated with CD28 dysfunction include mycosis fungiodes and Sezary's Disease.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: CD28; CD28 antigen; MGC138290; T-cell-specific surface glycoprotein CD28; TP44
Gene Aliases: CD28; Tp44
UniProt ID: (Human) P10747
Entrez Gene ID: (Human) 940
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