2. Metabolic Enzyme/Protease
  3. Phospholipase
  4. Melittin

Melittin is a PLA2 activator, stimulates the activity of the low molecular weight PLA2, while it does not the increase activity of the high molecular weight PLA2.

For research use only. We do not sell to patients.

Custom Peptide Synthesis

Melittin Chemical Structure

Melittin Chemical Structure

CAS No. : 20449-79-0

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25 mg USD 520 In-stock
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Customer Review

Based on 12 publication(s) in Google Scholar

Other Forms of Melittin:

Melittin Related Antibodies

Top Publications Citing Use of Products

    Melittin purchased from MedChemExpress. Usage Cited in: J Pharm Pharmacol. 2023 Mar 26;rgad008.  [Abstract]

    Melittin (2.5, 5, 10 μg/mL; 48 h) downregulates the expression of Bcl-2, and increases the levels of the pro-apoptotic molecules Bax and cyt-c, in SW480 cells.

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    • Biological Activity

    • Protocol

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Melittin is a PLA2 activator, stimulates the activity of the low molecular weight PLA2, while it does not the increase activity of the high molecular weight PLA2[1][2].

    IC50 & Target

    PLA2[1]
    In Vitro

    Melittin, an immunologically related PLA2 stimulating peptide from bee venom, increases the activity of the high molecular weight enzyme[1]. Melittin is a cytotoxic peptide from bee venom. Melittin exhibits toxicity against both A2780CR and A2780 cells, with IC50 values of 4.5 and 6.8 μg/mL, respectively. Melittin has natural anti-bacterial, anti-viral, and anti-inflammatory properties. It has also been shown to have diverse anticancer effects in several different cancer cell lines including those of gastric, breast, ovarian, liver, prostate, cervical, and lung origins. The mechanisms by which Melittin, an amphipathic haemolytic peptide, exerts its potential anticancer effects include inhibition of cell proliferation, induction of apoptosis, and direct necrosis. Melittin can also prevent EGF-induced cell invasion through its inhibition of the PI3K/Akt/mTOR signaling pathway, but this is primarily related to breast cancer cells[2].

    MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

    Melittin Related Antibodies
    Molecular Weight

    2846.46

    Formula

    C131H229N39O31
    CAS No.
    Appearance

    Solid

    Color

    White to off-white

    Sequence

    Gly-Ile-Gly-Ala-Val-Leu-Lys-Val-Leu-Thr-Thr-Gly-Leu-Pro-Ala-Leu-Ile-Ser-Trp-Ile-Lys-Arg-Lys-Arg-Gln-Gln-NH2
    Sequence Shortening

    GIGAVLKVLTTGLPALISWIKRKRQQ-NH2
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage

    Sealed storage, away from moisture and light

    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)

    Solvent & Solubility
    In Vitro: 

    H2O : ≥ 50 mg/mL (17.57 mM)

    *"≥" means soluble, but saturation unknown.

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 0.3513 mL 1.7566 mL 3.5131 mL
    5 mM 0.0703 mL 0.3513 mL 0.7026 mL
    View the 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). 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.

    • Molarity Calculator

    • Dilution Calculator

    Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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    Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

    This equation is commonly abbreviated as: C1V1 = C2V2

    Concentration (start)

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    In Vivo Dissolution Calculator
    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.
    Calculation results:
    Working solution concentration: mg/mL
    This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
    The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
    Purity & Documentation
    References
    Cell Assay
    [2]

    Melittin is purified from bee venom by reversed phase liquid chromatography and reconstituted in sterile water to form a stock solution of 1 mg/mL before storage at -20 °C until required for analysis. Cell viability is assessed by an Alamar Blue (AB) cell viability reagent. Both A2780 and A2780CR cells are seeded at 1×104 cells/well in 96-well plates and incubated at 37 °C and 5% CO2 in a humidified atmosphere for 24 h. After this incubation period, the cells are treated with various concentrations of Melittin ranging from 0.5 to 14 µg/mL in 100 μL of medium, and re-incubated at 37 °C and 5% CO2 for a further 24 h. Triton X at 1% (v/v) and cell culture media are used as positive and negative controls, respectively. After this, AB is added at a final concentration of 10% (v/v) and the resultant mixture is incubated for a further 4 h at 37 °C and 5% CO2. Then, the plates are read at an excitation wavelength of 560 nm and the emission at 590 nm is recorded on a SpectraMax M3 microplate reader . Background-corrected fluorescence readings are converted to cell viability data for each test well by expressing them as percentages relative to the mean negative control value[2].

    MCE has not independently confirmed the accuracy of these methods. They are for reference only.
    References

    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). 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 0.3513 mL 1.7566 mL 3.5131 mL 8.7828 mL
    5 mM 0.0703 mL 0.3513 mL 0.7026 mL 1.7566 mL
    10 mM 0.0351 mL 0.1757 mL 0.3513 mL 0.8783 mL
    15 mM 0.0234 mL 0.1171 mL 0.2342 mL 0.5855 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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    Melittin Related Classifications

    Help & FAQs
    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

    Keywords:

    Melittin20449-79-0PhospholipaseInhibitorinhibitorinhibit

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