KSPWFTTL TFA
Based on 1 Customer Validation
KSPWFTTL TFA is an immunodominant Kb-restricted epitope from the p15E transmembrane protein. KSPWFTTL TFA can restore susceptibility of a tumor line to anti-AKR/Gross MuLV cytotoxic T lymphocytes.
For research use only. We do not sell to patients.
- Purity : 99.32%
- Formula: C50H71F3N10O14
- Molecular Weight:1093.15
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Storage:
Sealed storage, away from moisture.
Powder -80°C, 2 years , -20°C, 1 year* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Protocols
- Purity & Documentation
- References
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Help & FAQs
Biological Activity
Description
In Vitro
KSPWFTTL TFA is derived from the retroviral p15 TM envelope protein. The cytolytic T-lymphocyte (CTL)-insusceptible, variant cl.18-5 clonal line, after pulsed with the KSPWFTTL TFA peptide, becomes susceptible to lysis by antiviral CTL[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only. Further protocols information, click here.
Chemical Information
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Appearance Solid
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Molecular Weight 1093.15
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Formula C50H71F3N10O14
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Color White to off-white
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Sequence
Lys-Ser-Pro-Trp-Phe-Thr-Thr-Leu
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Sequence Shortening
KSPWFTTL
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Sealed storage, away from moisture
Powder -80°C 2 years -20°C 1 year * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Solvent & Solubility
In Vitro:
H2O : 66.67 mg/mL (60.99 mM; Need ultrasonic)
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). 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). 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)
In Vivo:
For the following dissolution methods, please prepare the working solution directly:
It is recommended to prepare fresh solutions and use them promptly within a short period of time.
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: PBS
Solubility: 100 mg/mL (91.48 mM); Clear solution; Need ultrasonic
Protocols
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Membrane Protein Extraction Using Detergents and Chaotropes
Membrane protein extraction with detergents and chaotropes solubilizes lipid-bilayer-associated proteins by disrupting protein-lipid and protein-protein interactions while maintaining proteins in a soluble state for downstream electrophoresis, purification, or mass spectrometry. Chaotropes such as urea and thiourea improve solubilization of difficult proteins, while nonionic and zwitterionic detergents such as CHAPS, ASB-14, SB 3-10, MEGA-10, dodecyl maltoside, and Triton X-100 differ in extraction efficiency depending on sample type and membrane protein properties.
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Cell Viability Determination by MTT Colorimetric Assay
The following protocol uses the MTT colorimetric assay as a classic literature-established method for assessing cell viability/metabolic activity in cultured mammalian cells. MTT[3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] is reduced by metabolically active cells to a colored formazan product; the amount of formazan is quantified spectrophotometrically and provides an indirect measure of metabolically active viable cells. Importantly, MTT reduction reflects cellular oxidoreductase/metabolic activity rather than an absolute direct count of living cells, so changes in cellular metabolism can alter the signal independently of cell number.
Purity & Documentation
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Data Sheet (275 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)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. White HD, et, al. An immunodominant Kb-restricted peptide from the p15E transmembrane protein of endogenous ecotropic murine leukemia virus (MuLV) AKR623 that restores susceptibility of a tumor line to anti-AKR/Gross MuLV cytotoxic T lymphocytes. J Virol. 1994 Feb;68(2):897-904. [Content Brief]
[2]. Rich RF, et, al. Antiretroviral cytolytic T-lymphocyte nonresponsiveness: FasL/Fas-mediated inhibition of CD4(+) and CD8(+) antiviral T cells by viral antigen-positive veto cells. J Virol. 1999 May;73(5):3826-34. [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). 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 | 1 mM | 0.9148 mL | 4.5739 mL | 9.1479 mL | 22.8697 mL |
| 5 mM | 0.1830 mL | 0.9148 mL | 1.8296 mL | 4.5739 mL | |
| 10 mM | 0.0915 mL | 0.4574 mL | 0.9148 mL | 2.2870 mL | |
| 15 mM | 0.0610 mL | 0.3049 mL | 0.6099 mL | 1.5246 mL | |
| 20 mM | 0.0457 mL | 0.2287 mL | 0.4574 mL | 1.1435 mL | |
| 25 mM | 0.0366 mL | 0.1830 mL | 0.3659 mL | 0.9148 mL | |
| 30 mM | 0.0305 mL | 0.1525 mL | 0.3049 mL | 0.7623 mL | |
| 40 mM | 0.0229 mL | 0.1143 mL | 0.2287 mL | 0.5717 mL | |
| 50 mM | 0.0183 mL | 0.0915 mL | 0.1830 mL | 0.4574 mL | |
| 60 mM | 0.0152 mL | 0.0762 mL | 0.1525 mL | 0.3812 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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