Invitrogen™ CD28 Monoclonal Antibody (CD28.6), Functional Grade, eBioscience™, Invitrogen™

Catalog No.	Quantity
50-142-76	50 μg
50-112-9408	500 μg

Catalog No. 50-142-76 Supplier Invitrogen™ Supplier No. 16028881

Description

Mouse Monoclonal Antibody

Description: The CD28.6 monoclonal antibody reacts with the human CD28 molecule, a 44 kDa homodimer expressed by thymocytes, mature T cells and plasma cells. CD28 is a ligand for CD80 (B7-1) and CD86 (B7-2) and is a potent costimulator of T cells. Signaling through CD28 augments IL-2 and IL-2 receptor expression as well as cytotoxicity of CD3-activated T cells. The CD28.6 antibody has been reported for use in immunoblotting (WB) and neutralization studies and costimulation in the production of IL-2. Applications Reported: The CD28.6 antibody has been reported for use in flow cytometric analysis, and immunoblotting (WB). The recommended titer for WB is (∽1 μ/mL). CD28.6 has also been reported in in vitro functional assays, both blocking and co-stimulatory activities have been reported for this clone (please see references below). Applications Tested: TheCD28.6 antibody has been tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at less than or equal to 1 μg per test. A test is defined as the amount (μg) of antibody that will stain a cell sample in a final volume of 100 μL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest. Endotoxin: Less than 0.001 ng/ug antibody as determined by the LAL assay.

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.

Specifications

• Antigen: CD28
• Applications: Flow Cytometry, Functional Assay, Neutralization, Western Blot
• Classification: Monoclonal
• Clone: CD28.6
• Concentration: 1 mg/mL
• Conjugate: Functional Grade
• Formulation: PBS with no preservative; pH 7.2
• Gene: Cd28
• Gene Accession No.: P10747
• Gene Alias: antigen CD28; CD28; CD28 antigen; CD28 antigen (Tp44); CD28 isoform; CD28 isoform 2; Cd28 molecule; CD28 precursor protein; CD28 protein; CD28 protein precursor; CD28RNA; cell surface protein; CHT28; contains partial extracellular domain; costimulatory molecule B7 receptor CD28; EGK_04709; MGC138290; sCD28; soluble CD28; T44; T-cell costimulatory molecule CD28; T-cell costimulatory molecule Tp44; T-cell-specific surface glycoprotein CD28; T-cell-specific surface glycoprotein CD28 homolog; TP44
• Gene Symbols: Cd28
• Host Species: Mouse
• Purification Method: Affinity chromatography
• Quantity: 50 μg
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Gene ID (Entrez): 940
• Target Species: Human
• Content And Storage: 4°C
• Product Type: Antibody
• Form: Liquid
• Isotype: IgG2a κ

For Research Use Only.