This antibody recognizes a glycoprotein of 44-88kDa, which is identified as CD28. It is the critical T-cell co-stimulatory receptor which provides to the cell the important second activation signal by binding CD80 and CD86 that are expressed by antigen presenting cells. Besides its co-stimulation role, CD28 functions in preventing T-cells from anergic hyporesponsive state or from undergoing premature apoptotic cell death. CD28 is also expressed on human fetal NK cells and some NK cell lines, whereas on murine NK cells the CD28 expression is much broader.
Applications
Flow Cytometry, IF
Dilutions
Flow Cytometry: 5 µl / million cells or 5 µl / 100 µl whole blood, IF: 1:50-1:100
Reactivity
Human
Immunogen
Recombinant human CD28 protein.
Host
Mouse
Clonality
Monoclonal
Clone ID
CB28
Isotype
IgG1
Light Chains
kappa
Conjugate
PE
Excitation: 565nm, Emission: 578nm
Purification
Protein A/G chromatography.
Concentration
100 µg/ml
Molecular Weight
44 kDa (monomer) / 88 kDa (dimer)
Product Form
Liquid
Formulation
Supplied in 10mM Phosphate Buffered Saline with 0.05% BSA and 0.05% Sodium Azide.
SDS-PAGE analysis of Anti-CD28 Antibody [CB28] (PE) under non-reduced and reduced conditions; showing intact IgG and intact heavy and light chains, respectively. SDS-PAGE analysis confirms the integrity and purity of the antibody.
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