一个扩大的碎片结合结构的扩展库,用于全酶PTP1B,来自大规模晶体学数据的计算再分析
Tamar Mehlman1, Helen M Ginn2, Daniel A Keedy3
1Structural Biology Initiative, CUNY Advanced Science Research Center, New York, NY 10031, USA; PhD Program in Biochemistry, CUNY Graduate Center, New York, NY 10016, USA.
研究人员发现了65个新的蛋白质氨酸酸酶1B (PTP1B) 的碎片命中,这是糖尿病和癌症的关键目标. 结晶学数据的计算分析揭示了隐藏的蛋白质状态和新型的全性机制,推动了药物发现工作.
科学领域:
- 生物化学 生物化学
- 结构生物学 结构生物学
- 药物发现 药物发现 药物发现
背景情况:
- 检测与蛋白质结合的小分子碎片是具有挑战性的,因为结合亲和度低.
- 蛋白氨酸酸酶1B (PTP1B) 是糖尿病和癌症的重要治疗点,但仍被认为是治疗点.
- 没有药物可用的无毒药.
- . . . . . . . . . . . . . . 这是一个很好的时刻.
研究的目的:
- 用结晶学数据的计算分析来识别PTP1B的新片段命中.
- 为了证明这种方法在发现"隐藏"的连接体结合蛋白质状态方面的实用性.
- 描述PTP1B.中的新型结合点和质机制.
主要方法:
- 对PTP1B.B.进行大规模的晶体学选.
- 结晶学数据集的计算分析,以识别碎片绑定结构.
- 碎片-PTP1B复合体的结构特征.
主要成果:
- 确定了65个针对PTP1B.的新片段匹配结果.
- 在一个新的结合部位中发现了一个碎片,将相邻的全位点连接起来.
- 在PTP1B.中观察碎片诱导的长距离全形状反应.
- 揭示了比以前知道的约50%更多"隐藏"的连接体结合状态.
结论:
- 结晶学数据的计算分析是识别碎片结合蛋白质状态的强大方法.
- 现在有数十个新的PTP1B的联结结构已经公开了.
- 已经确定了PTP1B的结合性和性新方面,提供了新的治疗策略.
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