3-WP
3-WP is a linear 20-peptide with a C-terminal amidation modification. 3-WP acts on lipoteichoic acid (LTA) and disrupts cell wall permeability, induces intracellular reactive oxygen species (ROS) accumulation in a dose-dependent manner, and simultaneously inhibits respiratory chain dehydrogenase activity and intracellular ATP synthesis, thereby interfering with bacterial energy metabolism and exerting Bacterial antibacterial effects. The combination of 3-WP and Melittin (HY-P0233) exerts synergistic antibacterial effects against Gram-positive bacteria, reduces the required dosage of Melittin, and thus improves the cell selectivity of Melittin. 3-WP can serve as a peptide adjuvant for Melittin in food storage scenarios. 3-WP can be used in the research of foodborne diseases caused by methicillin-resistant Staphylococcus aureus.
For research use only. We do not sell to patients.
- Formula: C135H183N41O20
- Molecular Weight:2700.16
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
|
MRSA ATCC43300 |
MRSA DL5F2 |
MRSA DN65 |
3-WP (32 μM; 24 h) acts synergistically with Melittin to enhance the antibacterial activity against multiple Gram-positive strains including MRSA ATCC43300, MRSA DL5F2 and MRSA DN65, with FICI values ranging from 0.125 to 0.250. 3-WP significantly reduces the geometric mean MIC of melittin from 2.333 μM to 0.250 μM, indicating that 3-WP effectively enhances the antibacterial efficacy of melittin[1].
3-WP (1-64 μM; 4 h) exhibits favorable biosafety even at concentrations up to 64 μM, with no hemolysis or cytotoxicity; when used in combination with Melittin (HY-P0233), its cell selectivity is enhanced, and the SI against Gram-positive bacteria relative to mammalian cells increases to 53.827[1].
Combination treatment with 3-WP (1 μM; 24 h) and 0.125 μM Melittin exerts synergistic bactericidal activity against MRSA ATCC43300, reducing bacterial counts by nearly 5-log10 within 24 hours[1].
Combination of 3-WP (passaged for 30 generations) and Melittin delays the development of bacterial resistance in MRSA ATCC43300, with its MIC increasing only 2-fold after 30 consecutive passages[1].
Combination treatment with 3-WP (2 μM; 24 h) and 0.25 μM Melittin significantly inhibits biofilm formation of MRSA ATCC43300, reduces biofilm biomass and disrupts biofilm structure, whereas 3-WP used alone shows no such effects[1].
3-WP (2-8 μM) binds to LTA and disrupts the cell wall permeability of MRSA ATCC43300 in a dose-dependent manner, and this activity is retained when used in combination with 0.25 μM Melittin[1].
Combination treatment with 3-WP (2 μM; 0-120 min) and 0.25 μM Melittin significantly enhances cytoplasmic membrane damage to MRSA ATCC43300, increasing membrane rigidity, permeability, depolarization level and ATP leakage[1].
3-WP (2-8 μM; 0.5-4 h) induces dose-dependent accumulation of ROS in MRSA ATCC43300 and inhibits its energy metabolism (intracellular ATP production and respiratory chain dehydrogenase activity)[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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Molecular Weight 2700.16
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Formula C135H183N41O20
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Sequence
Trp-Pro-Arg-Pro-Trp-Pro-Arg-Pro-Trp-Pro-Arg-Pro-Trp-Pro-Arg-Pro-Trp-Pro-Arg-Pro-NH2
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Sequence Shortening
WPRPWPRPWPRPWPRPWPRP-NH2
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
References
[1]. HY-P11909.pdf
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)