钙调蛋白结构域来源小分子多肽的构建
张晨阳, 邵冬雪, 郑曦, 苏敬阳, 胡聪, 佟欣, 田兴, 古丽仙, 常心怡, 郝丽英中国医科大学药学院药物毒理学教研室, 沈阳 110122
收稿日期:
2020-08-17出版日期:
2021-08-30发布日期:
2021-07-29通讯作者:
郝丽英E-mail:lyhao@cmu.edu.cn作者简介:
张晨阳(1995-),女,硕士研究生.基金资助:
中国医科大学医学电生理学重点实验室开放基金(KeyME-2018-02);中国医科大学青年骨干支持计划项目(QGZ2018086);中国医科大学大学生创新训练项目(201910159125)关键词: 钙调蛋白, 小分子多肽, 构建
Abstract: Objective To construct a short polypeptide (EF-hand 4,a.a 113-148) derived from calmodulin domains and to establish a convenient and efficient electrophoresis method for its detection. Methods EF-hand 4 was prepared using a solid-phase peptide synthesis and detected by Tricine-SDS-PAGE gel electrophoresis with 16.5% T separating gel. CS Analyzer 3.0 software was employed to analyze the purity of EF-hand 4. The biological activity of EF-hand 4 was tested using a GST pull-down assay. Results Tricine-SDS-PAGE gel electrophoresis showed a clear band of EF-hand 4 at around 4×103; the purity of EF-hand 4 was 100%. EF-hand 4 bound to CaV1.2 channel and exerted biological activity. Conclusion The Tricine-SDS-PAGE gel electrophoresis detected EF-hand 4 simply,directly,and quickly. The EF-hand 4 peptide prepared by solid-phase synthesis possesses biological activity through binding to calcium channel receptors. The results provide a material basis for further studies of the biological function of EF-hand 4.
Key words: calmodulin, short polypeptide, construction
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