LLO (91-99)
Based on 1 Customer Validation
LLO (91-99) (Listeriolysin O (91-99)) is an exotoxin and class I MHC-restricted T-cell epitope of listeriolysin (LLO). LLO (91-99) is processed by antigen-presenting cells, binds to MHC class I molecules and is presented to the cell surface. LLO (91-99) induces CTL responses and effectively eliminates Listeria from infected cells. LLO (91-99) can be used in the research of Listeria infections (e.g., listeriosis).
For research use only. We do not sell to patients.
- Purity: 99.24%
- CAS No.: 137856-41-8
- Formula: C47H67N11O17
- Molecular Weight:1058.10
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Storage:
Sealed storage, away from moisture and light, under nitrogen.
Powder -80°C, 2 years , -20°C, 1 year* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen)
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
Biological Activity
LLO (91-99) (10 μg/mL; 5 days) induces cytotoxic T lymphocyte (CTL) responses against P815 target cells[1].
LLO (91-99) (5 μM; 24 h) pulsed dendritic cells (DCs) show high protection efficiency against listeriosis and induce strong CD8+ T cell responses with IFN-γ production[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 137856-41-8
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Appearance Solid
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Molecular Weight 1058.10
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Formula C47H67N11O17
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Color White to off-white
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Synonyms
Listeriolysin O (91-99)
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Sequence
Gly-Tyr-Lys-Asp-Gly-Asn-Glu-Tyr-Ile
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Sequence Shortening
GYKDGNEYI
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Sealed storage, away from moisture and light, under nitrogen
Powder -80°C 2 years -20°C 1 year * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen)
Solvent & Solubility
DMSO : ≥ 100 mg/mL (94.51 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
H2O : 50 mg/mL (47.25 mM; Need ultrasonic and warming)
* "≥" means soluble, but saturation unknown.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.5 mg/mL (2.36 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.5 mg/mL (2.36 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Working solution concentration: 0.22 mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
Purity & Documentation
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Data Sheet (274 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. N K Verma, et al. Delivery of class I and class II MHC-restricted T-cell epitopes of listeriolysin of Listeria monocytogenes by attenuated Salmonella. Vaccine. 1995 Feb;13(2):142-50. [Content Brief]
[2]. Carrero JA, et al. Listeriolysin o is strongly immunogenic independently of its cytotoxic activity. PLoS One. 2012;7(3):e32310. [Content Brief]
[3]. Calderón-González R, et al. Cellular vaccines in listeriosis: role of the Listeria antigen GAPDH. Front Cell Infect Microbiol. 2014 Feb 21;4:22. [Content Brief]
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| H2O / DMSO | 1 mM | 0.9451 mL | 4.7255 mL | 9.4509 mL | 23.6273 mL |
| 5 mM | 0.1890 mL | 0.9451 mL | 1.8902 mL | 4.7255 mL | |
| 10 mM | 0.0945 mL | 0.4725 mL | 0.9451 mL | 2.3627 mL | |
| 15 mM | 0.0630 mL | 0.3150 mL | 0.6301 mL | 1.5752 mL | |
| 20 mM | 0.0473 mL | 0.2363 mL | 0.4725 mL | 1.1814 mL | |
| 25 mM | 0.0378 mL | 0.1890 mL | 0.3780 mL | 0.9451 mL | |
| 30 mM | 0.0315 mL | 0.1575 mL | 0.3150 mL | 0.7876 mL | |
| 40 mM | 0.0236 mL | 0.1181 mL | 0.2363 mL | 0.5907 mL | |
| DMSO | 50 mM | 0.0189 mL | 0.0945 mL | 0.1890 mL | 0.4725 mL |
| 60 mM | 0.0158 mL | 0.0788 mL | 0.1575 mL | 0.3938 mL | |
| 80 mM | 0.0118 mL | 0.0591 mL | 0.1181 mL | 0.2953 mL |
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
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