title: Structural changes during muscle contraction.
mesh_terms: D000199:Actins; D009119:Muscle Contraction; D009124:Muscle Proteins; D009218:Myosins; D011487:Protein Conformation; D014961:X-Ray Diffraction
chemical_list: D000199:Actins; D009124:Muscle Proteins; D009218:Myosins