JBC:研究人员确定可能治疗炭疽的新靶标

2012-05-10 Beyond 生物谷

近日,美国密歇根大学的研究人员已经确定了新靶标的药物可能治疗炭疽,炭疽由炭疽杆菌引起的致命感染。 澳大药剂和澳大生命科学学院的教员学院Hans W. Vahlteich药物化学教授David Sherman等人发现一种新的方法能阻止细菌捕获铁的能力,铁对其生存和致病特性是至关重要的。 通过发现B型炭疽获得铁的机制,研究人员现在能够快速搜索功能强大的新的抗生素,以有效地预防或治疗致命的炭疽感染。

近日,美国密歇根大学的研究人员已经确定了新靶标的药物可能治疗炭疽,炭疽由炭疽杆菌引起的致命感染。

澳大药剂和澳大生命科学学院的教员学院Hans W. Vahlteich药物化学教授David Sherman等人发现一种新的方法能阻止细菌捕获铁的能力,铁对其生存和致病特性是至关重要的。

通过发现B型炭疽获得铁的机制,研究人员现在能够快速搜索功能强大的新的抗生素,以有效地预防或治疗致命的炭疽感染。这发现不仅提供了治疗炭疽感染的可能,同时也提升了发现强大的新抗感染药物的可能性。

我们已经从一个大的天然产物库的获取活性提取物,并希望很快能发现新的抗生素分子结构。 这项研究采取类似的做法,也与化学基因组中心合作,寻找有效的新抗生素对抗耐甲氧西林金黄色葡萄球菌、多耐药性金黄色葡萄球菌感染。研究结果发表在5月4日的Biological Chemistry 杂志上。

doi:10.1074/jbc.M112.359349
PMC:
PMID:

Functional and Structural Analysis of the Siderophore Synthetase AsbB through Reconstitution of the Petrobactin Biosynthetic Pathway from Bacillus anthracis*

Tyler D. Nusca, Youngchang Kim, Natalia Maltseva, Jung Yeop Lee, William Eschenfeldt, Lucy Stols, Michael M. Schofield, et al.

Background: asbABCDEF mediates petrobactin production and facilitates anthrax virulence.

Results: Purified AsbA-E proteins reconstituted petrobactin assembly in vitro. The crystal structure and enzymatic studies of AsbB highlight its function and role in the siderophore pathway.

Conclusion: AsbB characterization demonstrated reaction flexibility and substrate positions in the binding pocket.

Significance: Siderophore synthetases represent promising antimicrobial targets, and characterization of these versatile enzymes enables creation of novel compounds.

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    2012-09-19 lily1616
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    2012-05-12 zhaojie88