标签归档：脂肽

Globomycin

发表于由

Globomycin;

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。

Globomycinamp;;

Globomycin Chemical Structure

CAS No. : 67076-74-8

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生物活性

Globomycin is a lipopeptide antibiotic and a signal peptidase II (LspA) inhibitor. Globomycin inhibits processing of the prolipoprotein by binding irreversibly to the peptidase. Globomycin has toxic for the mollicute Spiroplasma melliferum with a MIC in the range 6.25-12.5 μM[1][2].

IC50 Target

Signal peptidase II (LspA)[1]
Gram-negative/Gram-positive bacteria[1]
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].
In B. diminuta DS010 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].

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

655.82

Formula

C32H57N5O9
CAS 号

67076-74-8
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.
参考文献

  • [1]. Béven L, et al. Inhibition of spiralin processing by the lipopeptide antibiotic globomycin. Curr Microbiol. 1996 Nov;33(5):317-22.

    [2]. Parthasarathy S, et al. Organophosphate Hydrolase Is a Lipoprotein and Interacts with Pi-specific Transport System to Facilitate Growth of Brevundimonas diminuta Using OP Insecticide as Source of Phosphate. J Biol Chem. 2016 Apr 1;291(14):7774-85.