中文名 | MAGAININ 2抗菌肽 |
英文名 | Magainin II |
别名 | 定制肽 23肽 蛙皮素 2 蛙皮素II 马盖宁 II 化合物XMD8-92 MAGAININ 2肽 MAGAININ 2抗菌肽 |
英文别名 | GS-23 MAGAININ 2 Magainin II MAGAININ II Magainin II peptide GIGKFLHSAKKFGKAFVGEIMNS Magainin 2 (Xenopus laevis) GLY-ILE-GLY-LYS-PHE-LEU-HIS-SER-ALA-LYS-LYS-PHE-GLY-LYS-ALA-PHE-VAL-GLY-GLU-ILE-MET-ASN-SER H-GLY-ILE-GLY-LYS-PHE-LEU-HIS-SER-ALA-LYS-LYS-PHE-GLY-LYS-ALA-PHE-VAL-GLY-GLU-ILE-MET-ASN-SER-OH |
CAS | 108433-95-0 |
化学式 | C114H180N30O29S |
分子量 | 2466.9 |
密度 | 1.275±0.06 g/cm3(Predicted) |
沸点 | 2444.0±65.0 °C(Predicted) |
存储条件 | -20°C |
物化性质 | 生物活性 Magainin 2 (Magainin II) 是一种抗菌肽 (AMP),从非洲爪蟾皮肤中分离得到。Magainin 2 显示抗生素活性对许多革兰氏阴性和革兰氏阳性细菌。Magainin 2 对原生动物也有活性。Magainin 2 通过优先与细菌膜中丰富的阴离子磷脂相互作用而发挥细胞毒性作用。 |
MDL号 | MFCD00133522 |
体外研究 | 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. 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. 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. |
WGK Germany | 3 |
1mg | 5mg | 10mg | |
---|---|---|---|
1 mM | 0.405 ml | 2.027 ml | 4.054 ml |
5 mM | 0.081 ml | 0.405 ml | 0.811 ml |
10 mM | 0.041 ml | 0.203 ml | 0.405 ml |
5 mM | 0.008 ml | 0.041 ml | 0.081 ml |
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