Human B7-1/CD80 ARExSet® antibody pair for ELISA

Protocol Booklet

Human B7-1/CD80 ARExSet® antibody pair for ELISA

Key features and details

Species: Human
Size: 5 plates,15 plates,50 plates
Sample Volume: 50 μl
Standard Curve Range: 15.63pg/ml-1000pg/ml
Assay type: Not Ready-to-Use
Sensitivity: 0.22pg/ml(50 μl)
Operation Duration: 120min
Assay type: Sandwich Elisa

Brand:

CAT.NO. : ASEH0121

US$ Please choose

Size:

5 plates 15 plates 50 plates

Trail, Bulk size or Custom requests Please contact us

Product Details

Background

B7-1 and B7-2, together with their receptors CD28 and CTLA-4, constitute one of the dominant co-stimulatory pathways that regulate T- and B-cell responses. Although both CTLA-4 and CD28 can bind to the same ligands, CTLA-4 binds to B7-1 and B7-2 with a 20‑100 fold higher affinity than CD28 and is involved in the down‑regulation of the immune response. B7-1 is expressed on activated B cells, activated T cells, and macrophages. B7-2 is constitutively expressed on interdigitating dendritic cells, Langerhans cells, peripheral blood dendritic cells, memory B cells, and germinal center B cells. Additionally, B7-2 is expressed at low levels on monocytes and can be up‑regulated through Interferon gamma. B7-1 and B7-2 are both members of the Immunoglobulin superfamily. Human B7-1 is a 288 amino acid (aa) protein containing a 34 aa signal peptide, a 208 aa extracellular domain, a 21 aa transmembrane domain, and a 25 aa cytoplasmic domain. Human B7-1 and B7-2 share 26% aa sequenceidentity. Human and mouse B7-1 share 44% aa sequenceidentity. However, it has been observed that both human and mouse B7-1 and B7-2 can bind to either human or mouse CD28 and CTLA-4, suggesting that there are conserved amino acids which form the B7-1/B7-2/CD28/CTLA-4 critical binding sites.

Typical data

pg/ml	O.D.		Average	Corrected
0.00	0.0171	0.0213	0.0192
15.63	0.2682	0.2970	0.2826	0.2634
31.25	0.5019	0.5559	0.5289	0.5097
62.50	1.0160	1.0790	1.0475	1.0283
125.00	1.8790	1.9880	1.9335	1.9143
250.00	3.0020	3.1540	3.0780	3.0588
500.00	4.1757	4.1825	4.1791	4.1599
1000.00	4.4758	4.7045	4.5902	4.5710

Product Features

Optimized capture and detection antibody pairings with recommended concentrations save lengthy development time
Development protocols are provided to guide further assay optimization
Assay can be customized to your specific needs
Economical alternative to complete kits

Kit Content

Capture Antibody
Detection Antibody
Recombinant Standard
Streptavidin conjugated to horseradish-peroxidase (Streptavidin-HRP)

Other Reagents Required

ARExSet^®Ancillary Reagent Kit (5 plates): containing 96 well microplates, plate sealers, substrate solution, stop solution, plate coating buffer (PBS), wash buffer, and assay buffer.

96 well microplates: AREX Biosciences, Catalog # DSEP01.

Plate Sealers: AREX Biosciences, Catalog # DSSF01.

Coating Buffer: 137 mM NaCl, 2.7 mM KCl, 8.1 mM Na₂HPO₄, 1.5 mM KH₂PO₄, pH 7.2-7.4, 0.2 μm filtered . AREX Biosciences, Catalog # DSCB01.

Blocking Buffer: AREX Biosciences, Catalog # DSBB01.

Wash Buffer: 0.05% Tween 20 in PBS, pH 7.2-7.4. AREX Biosciences, Catalog # DSWB01.

Assay Buffer: 0.5%BSA, 0.05%Tween20, PBS Solution.AREX Biosciences, Catalog # DSAB01

Substrate Solution: Tetramethylbenzidine. AREX Biosciences, Catalog # DSTS01.

Stop Solution: 0.5 mol/ml H₂SO₄. AREX Biosciences, Catalog # DSSS01.

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