Báo cáo khoa học: Supramolecular calsequestrin complex Protein–protein interactions in chronic low-frequency stimulated muscle, postnatal development and ageing

Supramolecular Calsequestrin Complex: Protein-Protein Interactions in Chronic Low-Frequency Stimulated Muscle, Postnatal Development, and Ageing

Tác giả: Louise Glover, Sandra Quinn, Michelle Ryan, Dirk Pette, Kay Ohlendieck

Lĩnh vực: Biochemistry, Cell Biology, Physiology

Nội dung tài liệu: This study investigates the protein-protein interactions within the supramolecular calsequestrin complex in skeletal muscle. Utilizing a calsequestrin-peroxidase conjugate, the research examines how the abundance and interactions of key sarcoplasmic reticulum proteins, including calsequestrin, junctin, triadin, and the ryanodine receptor, change under various physiological conditions such as chronic low-frequency stimulation, postnatal development, and ageing. The findings suggest that these interactions are crucial for excitation-contraction coupling and are influenced by fiber type transitions and cellular ageing, potentially impacting muscle function and plasticity.

Mục lục chi tiết:

• Introduction
• Materials and Methods (Animals, Materials, Membrane preparation, Gel electrophoresis and immunoblot analysis, Calsequestrin blot overlay, Identification of purified calsequestrin)
• Results (Calsequestrin complex formation in fast and slow muscle fibers, Calsequestrin complex formation in chronic low-frequency stimulated muscle fibers, Calsequestrin complex formation in developing and ageing muscle fibers)
• Discussion
• Acknowledgements
• References