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CD28 Antibody
SPA-01894
| Size | Price |
| 25 µg | Online Inquiry |
| 100 µg | Online Inquiry |
| More Options | Online Inquiry |
| Target Information | |
|---|---|
| Target Name | CD28 |
| Gene Abbr. | CD28 |
| Gene ID | 940 |
| Full Name | CD28 molecule |
| Alias | Tp44 |
| Introduction | CD28 is a transmembrane glycoprotein expressed by T cells as well as some other hematopoietic cells. T cell activation requires T cell receptor (TCR) recognition of antigen presented in the context of MHC molecules. CD28 acts as a T cell costimulatory receptor, and interaction of CD28 with its ligands CD80 or CD86 provides the second signal required for naïve T cell activation. Activation of naïve T cells in the absence of CD28 stimulation can result in a state of T cell anergy, or unresponsiveness. CD28 signals through cytoplasmic phospho-tyrosine motifs that bind several SH2 or SH3 domain-containing proteins involved in T cell activation. Recently, CD28 was demonstrated to be a preferred target of PD-1-mediated dephosphorylation. Consistently, CD28 expression was required for T cell proliferation following PD-1 blockade and CD28 stimulation was required for effective anti-PD-1 cancer immunotherapy in mice. Several CD28 isoforms are produced by alternative splicing. |
| Product Details | |
|---|---|
| Host | Rabbit |
| Clonality | Monoclonal |
| Clone No. | D665 |
| Isotype | IgG Kappa |
| Immunogen | The original D665 antibody was generated by immunizing mice alternately with A20 cells expressing mCD28 i.p. and with recombinant mCD28Ig s.c. |
| Usage | |
|---|---|
| Application | WB, FC, IHC, SPR |
| MW(KDa) | 14, 40-60 |
| Reactivity | Mouse |
| Specificity | This antibody binds to the laterally exposed C'D loop of CD28 and induces T cell proliferation without TCR ligation. |
| Storage & Handling | |
|---|---|
| Storage Buffer | PBS. |
| Preservative | 0.02% Proclin 300 |
| Storage Temp. | Store at 4 °C for up to 3 months. For longer storage, aliquot and store at -20 °C. |
For research use only. Not intended for any clinical use. No products from CD BioSciences may be resold, modified for resale or used to manufacture commercial products without prior written approval from CD BioSciences.