首页> 外文期刊>Journal of mass spectrometry: JMS >Toward high pressure miniature protein mass spectrometer: Theory and initial results
【24h】

Toward high pressure miniature protein mass spectrometer: Theory and initial results

机译:向高压微型蛋白质质谱仪:理论和初始结果

获取原文
获取原文并翻译 | 示例
           

摘要

Current miniature mass spectrometers mainly focus on the analyses of organic and small biological molecules. In this study, we explored the possibility of developing high resolution miniature ion trap mass spectrometers for whole protein analysis. Theoretical derivation, GPU assisted ion trajectory simulation, and initial experiments on home-developed "brick" mass spectrometer were carried out. Results show that ion-neutral collisions have smaller damping effect on large protein ions, and a higher buffer gas pressure should be applied during ion trap operations for protein ions. As a result, higher pressure ion trap operation not only benefits instrument miniaturization, but also improves mass resolution of protein ions. Dynamic mass scan rate and generation of low charge state protein ions are also found to be helpful in terms of improving mass resolutions. Theory and conclusions found in this work are also applicable in the development of benchtop mass spectrometers.
机译:目前的微型质谱仪主要关注有机和小生物分子的分析。 在这项研究中,我们探讨了开发高分辨率微型离子捕集器质谱仪的可能性,以进行全蛋白质分析。 进行了理论推导,GPU辅助离子轨迹模拟,并进行了家庭开发的“砖”质谱仪的初始实验。 结果表明,离子中性碰撞对大蛋白离子的阻尼效果较小,并且应在离子捕集器操作期间施加更高的缓冲气体压力,用于蛋白质离子。 结果,更高的压力离子陷阱操作不仅有益于仪器小型化,而且还改善了蛋白质离子的质量分辨率。 还发现动态质量扫描速率和低电荷态蛋白离子的产生在改善质量分辨率方面有助于。 本工作中发现的理论和结论也适用于基台质谱仪的开发。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号