Regulating striated muscle contraction: Through thick and thin

E Brunello, L Fusi - Annual Review of Physiology, 2024 - annualreviews.org
Force generation in striated muscle is primarily controlled by structural changes in the actin-
containing thin filaments triggered by an increase in intracellular calcium concentration …

Structural biochemistry of muscle contraction

Z Wang, S Raunser - Annual Review of Biochemistry, 2023 - annualreviews.org
Muscles are essential for movement and heart function. Contraction and relaxation of
muscles rely on the sliding of two types of filaments—the thin filament and the thick myosin …

Structures from intact myofibrils reveal mechanism of thin filament regulation through nebulin

Z Wang, M Grange, S Pospich, T Wagner, AL Kho… - Science, 2022 - science.org
In skeletal muscle, nebulin stabilizes and regulates the length of thin filaments, but the
underlying mechanism remains nebulous. In this work, we used cryo–electron tomography …

Small angle X-ray diffraction as a tool for structural characterization of muscle disease

W Ma, TC Irving - International Journal of Molecular Sciences, 2022 - mdpi.com
Small angle X-ray fiber diffraction is the method of choice for obtaining molecular level
structural information from striated muscle fibers under hydrated physiological conditions …

Structure of mavacamten-free human cardiac thick filaments within the sarcomere by cryoelectron tomography

L Chen, J Liu, H Rastegarpouyani… - Proceedings of the …, 2024 - National Acad Sciences
Heart muscle has the unique property that it can never rest; all cardiomyocytes contract with
each heartbeat which requires a complex control mechanism to regulate cardiac output to …

Mechanisms of myosin II force generation: insights from novel experimental techniques and approaches

DE Rassier, A Månsson - Physiological Reviews, 2025 - journals.physiology.org
Myosin II is a molecular motor that converts chemical energy derived from ATP hydrolysis
into mechanical work. Myosin II isoforms are responsible for muscle contraction and a range …

Cardiac myosin filaments are directly regulated by calcium

W Ma, S Nag, H Gong, L Qi, TC Irving - Journal of General Physiology, 2022 - rupress.org
Classically, striated muscle contraction is initiated by calcium (Ca2+)-dependent structural
changes in regulatory proteins on actin-containing thin filaments, which allow the binding of …

Cardiac sarcomere signaling in health and disease

AA Martin, BR Thompson, D Hahn… - International journal of …, 2022 - mdpi.com
The cardiac sarcomere is a triumph of biological evolution wherein myriad contractile and
regulatory proteins assemble into a quasi-crystalline lattice to serve as the central point …

High-resolution cryo-EM structure of the junction region of the native cardiac thin filament in relaxed state

CM Risi, B Belknap, HD White, K Dryden, JR Pinto… - PNAS …, 2023 - academic.oup.com
Cardiac contraction depends on molecular interactions among sarcomeric proteins
coordinated by the rising and falling intracellular Ca2+ levels. Cardiac thin filament (cTF) …

Nanomaterials-based imaging diagnosis and therapy of cardiovascular diseases

Y Zhong, X Zeng, Y Zeng, L Yang, J Peng, L Zhao… - Nano Today, 2022 - Elsevier
Cardiovascular diseases refer to a group of the circulatory system disorders, including
atherosclerosis, thrombosis, myocardial/cerebral infarction and the following ischemia …