通过MATE多药物传送器的药物挤出机制的结构基础
Yoshiki Tanaka1, Christopher J Hipolito, Andrés D Maturana
1RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan.
Nature
|March 29, 2013
概括
研究人员阐明了一个关键的多药物和有毒化合物挤出 (MATE) 载体的结构,揭示了药物挤出机制,并确定了用于治疗应用的强效抑制剂.
科学领域:
- 生物化学 生物化学
- 结构生物学 结构生物学
- 分子生物学分子生物学
背景情况:
- 多种药物和有毒化合物挤出 (MATE) 载体是关键的膜蛋白,涉及到外源生物的流动.
- 这些载体有助于细菌病原体和癌细胞的多药性耐药性,限制了药物的疗效.
- 开发MATE载体抑制剂对于改善治疗结果至关重要.
研究的目的:
- 为了确定来自Pyrococcus furiosus的H(+) 驱动的MATE传送器的高分辨率晶体结构.
- 阐明基质挤出和小分子和的抑制背后的结构机制.
- 确定潜在的化合物用于开发新型MATE抑制剂.
主要方法:
- 采用X射线晶体学,以获取MATE传送器在apo-form和复杂状态中的结构.
- 进行了功能分析,以评估结构特征对运输商活动的影响.
- 实验室内选择被用于识别具有抑制潜力的乙烯-宏环.
主要成果:
- 解决了P. furiosus MATE传送器的两个不同的阿波形状.
- 结构揭示了Asp 41的质子化如何触发构造变化,导致基质挤出.
- 宏环被证明可以结合中央裂,具有与抑制功效相关的明显结合模式.
结论:
- 该研究提供了详细的结构洞察力,了解MATE载体介导药物流出的机制.
- 确定了一种强大的乙烯-宏环抑制剂,向N-叶腔.
- 这些发现为设计用于临床应用的MATE载体的有效抑制剂奠定了基础.
相关概念视频
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