基本信息
views: 0
![](https://originalfileserver.aminer.cn/sys/aminer/icon/show-trajectory.png)
Bio
We are involved in structural studies on the assembly and function of actin-containing thin filaments in muscle and non-muscle cells. Our principal goal is to analyze and elucidate the mechanisms of thin filament-linked regulation of muscle contraction and cytoskeletal remodeling. To accomplish this goal, we use a combination of molecular biology, electron microscopy, electron tomography, image reconstruction and computational tools such as molecular dynamics protocols to better understand the interactions and dynamics of protein components of isolated and reconstituted thin filaments. Studies on mutants are carried out to elucidate abnormal filament function in disease processes.
Our laboratory was the first to directly visualize the steric-blocking mechanism of muscle regulation by identifying the positions assumed by tropomyosin on actin in the presence and the absence of Ca2+ using cryo-electron microscopy and negative staining. We also have demonstrated that during muscle activation tropomyosin moves away from myosin cross-bridge binding sites on actin in two highly cooperative steps, one induced by Ca2+ binding to troponin and a second induced by the binding of myosin to actin. Our laboratory is continuing the above-mentioned studies to obtain even greater resolution of the processes involved. At the same time, we are investigating the structural organization of troponin on thin filaments and the changes it undergoes on binding of Ca2+. We have also been engaged in studies on the structural interactions of other actin binding proteins including α-actinin, myosin binding protein-C, caldesmon, calponin, cortactin, filamin and native and mutant dystrophin, namely proteins that play important roles in the organization of the cytoskeleton in striated and smooth muscles as well as in non-muscle cells.
Research Interests
Papers共 276 篇Author StatisticsCo-AuthorSimilar Experts
By YearBy Citation主题筛选期刊级别筛选合作者筛选合作机构筛选
时间
引用量
主题
期刊级别
合作者
合作机构
Journal of Cardiac Failure (2024): S3
Olga E. Karpicheva, Mariia V. Tishkova, Yurii S. Borovikov,Charles S. Redwood,Michael J. Rynkiewicz,William Lehman
Biophysical Journalno. 3 (2024)
Journal of molecular and cellular cardiology (2024): 30-37
JOURNAL OF CARDIAC FAILURE (2024): S3-S3
Cited0Views0Bibtex
0
0
The Journal of general physiologyno. 7 (2023)
crossref(2023)
crossref(2023)
Load More
Author Statistics
#Papers: 276
#Citation: 8460
H-Index: 48
G-Index: 87
Sociability: 6
Diversity: 0
Activity: 1
Co-Author
Co-Institution
D-Core
- 合作者
- 学生
- 导师
Data Disclaimer
The page data are from open Internet sources, cooperative publishers and automatic analysis results through AI technology. We do not make any commitments and guarantees for the validity, accuracy, correctness, reliability, completeness and timeliness of the page data. If you have any questions, please contact us by email: report@aminer.cn