CD28 Recombinant antibody

CD28 Uni-rAb^TM Recombinant Antibody for WB, ELISA

Host / Isotype

Rabbit / IgG

Reactivity

human

Applications

WB, ELISA

Conjugate

Unconjugated

CloneNo.

240354D9

Cat no : 83383-7-RR

Synonyms

Tp44, T-cell-specific surface glycoprotein CD28, CD28 molecule, 240354D9

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Validation Data Gallery

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  WB analysis using 83383-7-RR

  Various lysates were subjected to SDS PAGE followed by western blot with 83383-7-RR (CD28 antibody) at dilution of 1:2000 incubated at room temperature for 1.5 hours.

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  Affinity and Kinetic Characterization of 83383-7-RR

  Biolayer interferometry (BLl) kinetic assays of 83383-7-RR against Human CD28 were performed. The affinity constant is 2.75 nM.

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Tested Applications

• Positive WB detected in: Jurkat cells

Recommended dilution

• Western Blot (WB): WB : 1:1000-1:4000

It is recommended that this reagent should be titrated in each testing system to obtain optimal results.

Sample-dependent, Check data in validation data gallery.

Product Information

The immunogen of 83383-7-RR is CD28 Fusion Protein expressed in E. coli.

• Tested Reactivity: human
• Host / Isotype: Rabbit / IgG
• Class: Recombinant
• Type: Antibody
• Immunogen: Fusion Protein
• Full Name: CD28 molecule
• Calculated Molecular Weight: 220 aa, 25 kDa
• Observed Molecular Weight: 40-50 kDa
• GenBank Accession Number: BC093698
• Gene Symbol: CD28
• Gene ID (NCBI): 940
• Conjugate: Unconjugated
• Form: Liquid
• Purification Method: Protein A purfication
• Storage Buffer: PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
• Storage Conditions: Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20^oC storage. 20ul sizes contain 0.1% BSA.

Background Information

CD28 (T-cell-specific surface glycoprotein CD28), also known as T44 and Tp44, is a 44 kD disulfide-linked homodimeric type I glycoprotein (PMID: 2162180). It is a member of the immunoglobulin superfamily and is expressed on most T lineage cells, NK cell subsets, and plasma cells (PMID: 2162180, 8386518). CD28 may affect in vivo immune responses by functioning both as a cell adhesion molecule linking B and T lymphocytes and as the surface component of a novel signal transduction pathway (PMID: 2162180, 3021470). CD28 binds both CD80 and CD86 with a highly conserved motif MYPPY in the CDR3-like loop (PMID: 15696168, 7964482). CD28 is considered a major co-stimulatory molecule, inducing T lymphocyte activation and IL-2 synthesis, and preventing cell death (PMID: 1348520).