2. Anti-infection
  3. Bacterial Antibiotic Fungal
  4. Magainin 2

Magainin 2  (Synonyms: Magainin II)

Cat. No.: HY-P0270 Purity: 98.92%
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Magainin 2 (Magainin II) is an?antimicrobial?peptide (AMP) isolated from the skin of the African clawed frog Xenopus laevis. Magainin 2 displays antibiotic activity against numerous gram-negative and gram-positive bacteria. Magainin 2 also is active against protozoa. Magainin 2 exerts its cytotoxicity effects by preferential interactions with anionic phospholipids abundant in bacterial membranes.

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

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Magainin 2 Chemical Structure

Magainin 2 Chemical Structure

CAS No. : 108433-95-0

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500 μg USD 108 In-stock
1 mg USD 192 In-stock
5 mg USD 470 In-stock
10 mg USD 700 In-stock
25 mg USD 1120 In-stock
50 mg USD 1520 In-stock
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Based on 1 publication(s) in Google Scholar

Magainin 2 Related Antibodies

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Description

Magainin 2 (Magainin II) is an?antimicrobial?peptide (AMP) isolated from the skin of the African clawed frog Xenopus laevis. Magainin 2 displays antibiotic activity against numerous gram-negative and gram-positive bacteria. Magainin 2 also is active against protozoa[1]. Magainin 2 exerts its cytotoxicity effects by preferential interactions with anionic phospholipids abundant in bacterial membranes[2].

In Vitro

Magainin 2 exhibits bactericidal effects and induces morphological changes in Escherichia coli regarding early apoptosis. Magainin 2 induces the expression of a bacterial protein with affinity for the caspase substrate and effects the expression of RecA as a caspase-like protein[1]. Magainin 2 kill bacteria by permeabilizing the cell membranes without exhibiting significant toxicity against mammalian cells. The main target of the peptide is considered to be the lipid matrix of the membranes. Application of 10 μg /mL magainin 2 to Paramecium caudatum, a protozoan, in pond water caused an osmotic swelling of the cell and a subsequent cell burst, suggesting that the peptide could perturb membrane functions responsible for osmotic balance[2]. Magainin 2 permeabilizes bacterial and mammalian membranes in significantly different ways. The peptide forms pores with a diameter of about 2.8 nm (less than 6.6 nm) in B. megaterium, and translocates into the cytosol. In contrast, the peptide significantly perturbes the membrane of CHO-K1 cells, permitting the entry of a large molecule (larger than 23 nm) into the cytosol, accompanied by membrane budding and lipid flip-flop, mainly accumulating in mitochondria and nuclei[3].

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

Magainin 2 Related Antibodies
Molecular Weight

2466.90

Formula

C114H180N30O29S
CAS No.
Appearance

Solid

Color

White to off-white

Sequence

Gly-Ile-Gly-Lys-Phe-Leu-His-Ser-Ala-Lys-Lys-Phe-Gly-Lys-Ala-Phe-Val-Gly-Glu-Ile-Met-Asn-Ser
Sequence Shortening

GIGKFLHSAKKFGKAFVGEIMNS
Structure Classification
Initial Source

the skin of the African clawed frog
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 (20.27 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 0.4054 mL 2.0268 mL 4.0537 mL
5 mM 0.0811 mL 0.4054 mL 0.8107 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.

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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

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Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
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g

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(per animal)

μL

Number of animals

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
[1]

Escherichia coli cells are incubated with magainin 2 (50 μg /mL). The cultures are acquired after incubation for 0, 2, 4, 6, and 8 h, respectively, and spread onto LB agar plates, and then the colony-forming units are counted after incubation for 24 h at 37°C. The percentage survival is determined relative to the control treatment[1].

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 0.4054 mL 2.0268 mL 4.0537 mL 10.1342 mL
5 mM 0.0811 mL 0.4054 mL 0.8107 mL 2.0268 mL
10 mM 0.0405 mL 0.2027 mL 0.4054 mL 1.0134 mL
15 mM 0.0270 mL 0.1351 mL 0.2702 mL 0.6756 mL
20 mM 0.0203 mL 0.1013 mL 0.2027 mL 0.5067 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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Magainin 2 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:

Magainin 2108433-95-0Magainin IIMagainin2Magainin-2BacterialAntibioticFungalantimicrobial peptideAMPgram-negativegram-positivebacteriaprotozoa phospholipid cytotoxicitycellInhibitorinhibitorinhibit

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