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| Description | HBV sequence-2 residues 28–39, an HLA-restricted T-cell region; used for HBV-specific immunity, infection outcome and therapeutic vaccines. |
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) |
| HBV Seq2 aa:28-39 (hepatitis B virus surface antigen 28-39 dodecapeptide) | HBsAg (28-39), IPQSLDSWWTSL, a-determinant region, H-Ile-Pro-Gln-Ser-Leu-Asp-Ser-Trp-Trp-Thr-Ser-Leu-OH | HBV surface antigen epitope, a-determinant, B-cell epitope, diagnostic antigen region, Trp×2 (light-protection), serological assay reagent development | H-Ile-Pro-Gln-Ser-Leu-Asp-Ser-Trp-Trp-Thr-Ser-Leu-OH (IPQSLDSWWTSL, linear 12-mer, free N-terminal amino group and free C-terminal carboxyl; contains 2 Trp, no Cys/Met) | C67H97N15O20 | 1431.70 | 1432.60 | Not specified (subject to COA) | 12 |
Physicochemical Solubility & Storage Parameters
| Product Code | Appearance | Long-term Storage | Short-term Storage | Solution Stability | Solid Powder Stability |
| PEP-HBV2839-01 | white to off-white | Store desiccated, light-protected and sealed below -20°C; contains 2 Trp highly susceptible to photo-oxidation, keep strictly protected from light; powder stable for ~3 years; reconstituted aliquots can be stored light-protected at -80°C for ~1 year | Store sealed, desiccated and light-protected at 4°C, use within 2-4 weeks; after reconstitution, aliquot and store light-protected at -20°C, avoid repeated freeze-thaw | A short peptide with relatively good aqueous solubility; reconstitute directly with water or PBS; contains 2 Trp residues highly susceptible to photo-oxidation-strictly protect from light throughout reconstitution and storage (amber tube / foil wrap); no Cys/Met, so no additional antioxidation or dimerization requirement | powder stable for ~3 years at -20°C when desiccated, light-protected and sealed; protect from moisture and light; aliquot promptly after opening, keep light-protected in a desiccator |
Functional Description
| Product Code | Frontend Short Summary | Detailed Biological Function Description | Applicable Research Areas (comma-separated) | Targets / Pathways |
| PEP-HBV2839-01 | The 28-39 dodecapeptide IPQSLDSWWTSL of the hepatitis B virus surface antigen (HBsAg small S protein); located at the start of the highly conserved HBsAg 'a' determinant, a B-cell epitope / diagnostic-antigen region used for HBV serological reagent development, epitope mapping, and hepatitis B diagnostics/vaccine research. | This peptide corresponds to residues 28-39 (IPQSLDSWWTSL) of the hepatitis B virus surface antigen (HBsAg small S protein; 'Seq2' in this catalog refers to the surface antigen). This segment lies at the beginning of the highly conserved HBsAg 'a' determinant, where the major subtypes adr/adw/ayw are essentially identical, constituting an important B-cell epitope and diagnostic-antigen region. According to supplier data (MedChemExpress, PeptideDB; CAS 168417-72-9), this product is used for HBV serological assay reagent development, HBsAg epitope mapping, anti-HBs antibody recognition studies, as well as hepatitis B diagnostic reagent and vaccine research. Note that it contains 2 Trp residues highly susceptible to photo-oxidation and must be kept light-protected throughout; 'Seq2' in this catalog refers to the surface antigen (HBsAg), whereas 'Seq1' refers to the core antigen (HBcAg); surface-antigen numbering varies slightly with genotype, so order by the sequence IPQSLDSWWTSL and CAS 168417-72-9. | Viral hepatitis, HBsAg epitope mapping, B-cell epitope / diagnostic antigen, HBV serological assay reagent development, hepatitis B diagnostics and vaccine research | HBsAg 'a' determinant; anti-HBs antibodies / B-cell epitope |
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