人类血清蛋白酶抑制剂 (serpin) B9 的结晶和结晶学研究
1Department of Pathophysiology, Shanghai Jiaotong University School of Medicine, 280 South Chongqing Road, Shanghai 200025, People's Republic of China.
概括
对蛋白酶抑制剂B9 (serpin B9) 的第一个结构洞察力揭示了其独特的构造. 这一发现为开发针对免疫调节的新型抗癌药物开辟了道路.
科学领域:
- 结构生物学 结构生物学
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 血清蛋白酶抑制剂B9 (serpin B9) 对于免疫反应调节至关重要.
- 塞尔B9抑制了granzyme B,这是细胞毒性T淋巴细胞和自然杀手细胞中的关键酶.
- 之前尚不清楚素B9的结构细节,这阻碍了其治疗潜力.
研究的目的:
- 为了阐明蛇形B9.9的三维结构.
- 为了识别抗癌疗法,serpin B9上潜在的药物点.
主要方法:
- 准备和结晶的重新组合的人类蛇B9.9.的切割形式的准备和结晶.
- 在1.9 Å分辨率下收集X射线衍射数据.
- 结构的确定和分析.
主要成果:
- 蛇形B9的晶体结构是在空间组P212121中确定.
- 塞尔B9采用了松散的形状,与裂的反应中心循环插入到中央β-sheet.
- 与其他蛇形相比,螺旋D周围的独特结构偏差创造了更大的表面腔.
结论:
- 确定的结构提供了Serpin B9.9的第一个详细视图.
- 已识别的表面腔体代表了小分子抑制剂开发的有希望的目标.
- 这种结构信息提升了塞尔B9作为抗癌药物标的潜力.
关键词:
在X射线晶体学.结晶化 结晶化的过程.螺旋 D D D 的螺旋塞尔宾B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B9 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1蛇 蛇 蛇 蛇 蛇 蛇 蛇更多相关视频
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