Globomycin 是一种脂肽抗生素,也是一种信号肽酶 II (LspA) 抑制剂。Globomycin 通过不可逆地结合肽酶来抑制原脂蛋白的加工。Globomycin 对Spiroplasma melliferum有毒性,其MIC在 6.25-12.5 μM 范围内。
生物活性 | Globomycin is alipopeptideantibiotic and asignal peptidase II (LspA)inhibitor. Globomycin inhibits processing of the prolipoprotein by binding irreversibly to the peptidase. Globomycin has toxic for the mollicuteSpiroplasma melliferumwith aMICin the range 6.25-12.5 μM[1][2]. |
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体外研究 (In Vitro) | Globomycin is capable of inhibiting the growth of S. melliferum. The MICs are 6.25 μM (4.1 μg/mL) for strain BC3 and 12.5 μM (8.2 μg/mL) for strain B88[1]. Globomycin can interfere with the processing of bacterial lipoproteins by inhibition of signal peptidase II in gracilicutes (Gram-negative eubacteria) and firmicutes (Gram-positive eubacteria)[1]. InB. diminutaDS010 cells, in the Globomycin-treated cultures most of the organophosphate hydrolase (OPH) accumulates in the cytoplasmic fraction in an unprocessed form. This is in contrast with the untreated cells where very little precursor was detectable. Moreover, there is substantially less mature OPH detectable in the membrane fraction following Globomycin treatment. The OPH signal peptide contains an invariant cysteine residue at the junction of the signal peptidase (Spase) cleavage site along with a well conserved lipobox motif. Substitution of the conserved lipobox cysteine to serine resulted in release of OPH into the periplasm, confirming that OPH is a lipoprotein[2].
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运输条件 | Room temperature in continental US; may vary elsewhere. |
储存方式 | 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) |