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| Description | EBNA-3A residues 458–466, one component of the CMV/EBV/influenza (CEF) memory-T pool, commonly recognized in healthy adults; used for cellular-immunity assessment and antiviral T monitoring. |
Product Basic Information Table
| Product Standard English Name | Product Abbreviation / Alias | Function Tags (comma-separated) | Core Structure | Molecular Formula | Exact Mass (Da) | Average MW (Da) | Salt Form | Length (aa) |
| CEF19, EBV EBNA-3A (458-466) CTL epitope peptide (HLA-B*35:01-restricted) | CEF 19, EBV EBNA-3A 458-466, YPLHEQHGM peptide, HLA-B35 EBNA3A epitope | viral T cell epitope, EBV, latent antigen, MHC class I ligand, CEF peptide pool, CTL recognition | YPLHEQHGM (H-Tyr-Pro-Leu-His-Glu-Gln-His-Gly-Met-OH, linear 9-mer, free N-terminal amino / free C-terminal carboxyl) | C49H70N14O14S | 1110.49 | 1111.24 | Free acid (per published formula) | 9 |
Physicochemical Solubility & Storage Parameters
| Product Code | Appearance | Long-term Storage | Short-term Storage | Solution Stability | Solid Powder Stability |
| PEP-CEF19-01 | white to off-white (MCE, purity ≥95% HPLC) | Store frozen below -20 C, protected from light, dry and tightly sealed | Store at 4 C sealed, dry and light-protected, use within 2-4 weeks; after reconstitution aliquot and store at -20 C, avoid repeated freeze-thaw | Moderately soluble in water (~22% hydrophobic, polar E/D and K residues); contains 1 Met (oxidation-prone) and 1 Tyr (light-sensitive); after reconstitution protect from light, deoxygenate, avoid oxidants, and aliquot to reduce repeated freeze-thaw | powder stable long-term at -20 C when dry, light-protected and sealed; keep moisture- and light-protected; Met is oxidation-sensitive, avoid prolonged air/light exposure |
Functional Description
| Product Code | Frontend Short Summary | Detailed Biological Function Description | Applicable Research Areas (comma-separated) | Targets / Receptors |
| PEP-CEF19-01 | 9-mer latent EBV EBNA-3A epitope (residues 458-466, YPLHEQHGM), HLA-B*35:01-restricted; component of the CEF T-cell control peptide pool. | This 9-mer derives from residues 458-466 of the latent EBV nuclear antigen 3A (EBNA-3A, type-1 B95.8 strain) and is a well-characterized HLA-B*35:01-restricted CD8+ cytotoxic T-lymphocyte epitope; it is peptide #19 of the CEF (CMV/EBV/influenza) positive-control peptide pool. EBV-specific CD8+ T cells regulate EBV latent infection and EBV-associated malignancies, and this peptide is routinely used as a positive control in ELISPOT, intracellular cytokine staining and MHC tetramer T-cell assays. | EBV immunology, CD8 T cell assays, CEF peptide pool, viral infection and cancer, immune monitoring positive control | HLA-B*35:01 (EBNA-3A-specific CD8+ T cells) |
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