title: Electron probe X-ray microanalysis of K, Rb, Cs, and T1 in cryosections of striated muscle.
abstract: Muscles containing the normal amount of K+ or loaded with Rb+, Cs+, or T1+ were cryofixed, cryosectioned and analysed by electron probe X-ray microanalysis. Previously reported results obtained with independent methods were confirmed: The alkali-metals and T1 are mainly localized in the A bands and at Z lines of the striated muscle. The results are in accordance with the association-induction hypothesis and the concept that K+ is physically adsorbed onto beta- and gamma-carboxyl side chains of myosin and other proteins.
mesh_terms: D000818:Animals; D002586:Cesium / Q000032:analysis*; D004577:Electron Probe Microanalysis; D008855:Microscopy, Electron, Scanning; D009132:Muscles / Q000032:analysis*; D011188:Potassium / Q000032:analysis*; D011894:Rana pipiens; D012413:Rubidium / Q000032:analysis*; D013793:Thallium / Q000032:analysis*; D014018:Tissue Distribution
chemical_list: D002586:Cesium; D013793:Thallium; D012413:Rubidium; D011188:Potassium