Active Cluster Of Differentiation 28 (CD28)
Tp44; T-Cell-Specific Surface Glycoprotein
- Product No.APA652Mu01
- Organism SpeciesMus musculus (Mouse) Same name, Different species.
- Buffer FormulationPBS, pH7.4, containing 0.01% SKL, 5% Trehalose.
- Traits Freeze-dried powder
- Purity> 90%
- Isoelectric Point6.2
- ApplicationsCell culture; Activity Assays.
- DownloadInstruction Manual
- UOM 10µg50µg 200µg 1mg 5mg
- FOB
US$ 164
For more details, please contact local distributors! US$ 410 US$ 820 US$ 2460 US$ 6150
ACTIVITY TEST
![](/upload/product/pictures/APA652Mu01-202405211449261613.jpg)
The cluster of differentiation (CD) antigen CD28 is a central co-stimulatory molecule for TCR-mediated activation such as cytokine production and T-cell proliferation upon ligand binding and TCR stimulation. It is a member of the immunoglobulin subfamily, other members of the subfamily include ICOS, CTLA4, PD1, PD1H, TIGIT and BTLA. Cytotoxic T-Lymphocyte Associated Antigen 4 (CTLA4) and CD28 are highly homologous and compete for the same ligands, CTLA4 can also bind with CD28 to form a dimer. Thus a functional binding ELISA assay was conducted to detect the interaction of recombinant mouse CD28 and recombinant rat CTLA4. Briefly, rmCD28 was diluted serially in PBS with 0.01% BSA (pH 7.4). Duplicate samples of 100 μl were then transferred to CTLA4-coated microtiter wells and incubated for 1h at 37℃. Wells were washed with PBST and incubated for 1h with anti-CD28 pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody for 1h at 37℃, wells were aspirated and washed 5 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37℃. Finally, add 50 µL stop solution to the wells and read at 450/630 nm immediately. The binding activity of recombinant mouse CD28 and recombinant rat CTLA4 was shown in Figure 1, the EC50 for this effect is 2.82 ug/mL.
USAGE
Reconstitute in 10mM PBS (pH7.4) to a concentration of 0.1-1.0 mg/mL. Do not vortex.
STORAGE
Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.
STABILITY
The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.
GIVEAWAYS
INCREMENT SERVICES
-
BCA Protein Quantification Kit
-
Molecular Mass Marker for Protein
-
Monoclonal Antibody Customized Service
-
Polyclonal Antibody Customized Service
-
Protein Activity Test Experiment Service
-
Electrophoretic Mobility Shift Assay (EMSA) Experiment Service
-
Buffer
-
Lentivirus Packaging Experiment Service
-
Adenovirus Packaging Experiment Service
-
Real Time PCR Experimental Service
-
Spike RBD Protein (S-RBD)
-
Protein G
-
Protein A
Catalog No. | Related products for research use of Mus musculus (Mouse) Organism species | Applications (RESEARCH USE ONLY!) |
RPA652Mu02 | Recombinant Cluster Of Differentiation 28 (CD28) | Positive Control; Immunogen; SDS-PAGE; WB. |
RPA652Mu01 | Recombinant Cluster Of Differentiation 28 (CD28) | Positive Control; Immunogen; SDS-PAGE; WB. |
APA652Mu01 | Active Cluster Of Differentiation 28 (CD28) | Cell culture; Activity Assays. |
PAA652Mu02 | Polyclonal Antibody to Cluster Of Differentiation 28 (CD28) | WB; IHC; ICC; IP. |
PAA652Mu01 | Polyclonal Antibody to Cluster Of Differentiation 28 (CD28) | WB; IHC; ICC; IP. |