title: [Structural and metabolic changes occuring during the contractile activity of isolated muscle fibers; microspectrophotometric study with polarized light of the ultraviolet region].
abstract: The use of a technique of in vivo microspectrophotometry with ultraviolet polarized light on frog myocardial trabeculae or isolated fibers has indicated an increase in the fraction of oriented aromatic aminoacids and a decrease in the fraction of bounded nucleotides, during the contractile event.
mesh_terms: D000255:Adenosine Triphosphate; D000818:Animals; D009119:Muscle Contraction; D009124:Muscle Proteins; D009132:Muscles / Q000378:metabolism*; D009206:Myocardium; D011487:Protein Conformation; D013056:Spectrophotometry, Ultraviolet; D013057:Spectrum Analysis; D014364:Tryptophan; D014443:Tyrosine
chemical_list: D009124:Muscle Proteins; D014443:Tyrosine; D014364:Tryptophan; D000255:Adenosine Triphosphate
vernacular_title: Modifications structurales et métaboliques survenant lors de l'activité contractile de fibres musculaires isolées; étude microspectrophotométrique en lumière polarisée, dans l'ultraviolet