Anti-CD28 antibody (bs-23338R)

Anti-CD28 antibody 

DATASHEET

Host:Rabbit

Target Protein:CD28

IR:Immunogen Range:21-120/220

Clonality:Polyclonal

Isotype:IgG

Entrez Gene:12487

Swiss Prot:P31041

Source:KLH conjugated synthetic peptide derived from human CD28:21-120/220 

Purification:affinity purified by Protein A

Storage:0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol. Shipped at 4℃. Store at -20 °C for one year. Avoid repeated freeze/thaw cycles.

Background:Human CD28 antigen is a 44 kDa disulfide linked homodimeric T cell specific surface glycoprotein. It is a cell adhesion molecule of the immunoglobulin superfamily which is constitutively expressed on most peripheral blood T lymphocytes (approximately 95% of CD4+ cells and 50% of CD8+ cells). Mature thymocytes exhibit higher levels of CD28 than the immature cells. Activation of T cells results in enhanced CD28 expression. T cell activation requires two combined signals provided by antigen presenting cells. The first is mediated via the T cell receptor following its interaction with antigenic peptide MHC complexes, and the second is delivered by accessory or costimulating molecules through their counter receptors on T lymphocytes. CD28 bears structural homology to CTLA 4 which is expressed at very low levels on the surface of CD4+ and CD8+ peripheral blood cells only following activation. CD28 is the natural receptor for the B7/BB 1 ligand (CD80) a 55-60 kDa glycoprotein which is expressed on activated B lymphocytes, on dendritic cells and on interferon gamma treated monocytes. The binding of B7 1/BB 1 molecules to CD28 is involved in T lymphocyte activation and in the initiation and maintenance of chronic inflammation.

Size:100ul

Concentration:1mg/ml

Applications:WB(1:500-2000)
IHC-P(1:100-500)
IHC-F(1:100-500)
ICC(1:100-500)
IF(1:100-500)

Cross Reactive Species:Human
Mouse
.

For research use only. Not intended for diagnostic or therapeutic use.

VALIDATION IMAGES

Sample:
Lymph node (Mouse) Lysate at 40 ug
Primary: Anti-CD28 (bs-23338R) at 1/1000 dilution
Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/20000 dilution
Predicted band size: 25 kD
Observed band size: 44 kD