[Study of the structure of metal-binding centers of calmodulin by EXAFS-spectroscopy].
An investigation of Ca2+-binding centers of calmodulin was carried out by EXAFS-spectroscopy. The experimental results for protein preparations of calmodulin in which Ca2+ was isomorphically replaced by Tb3+ were obtained by a spectrometer working at the Institute of Nuclear Physics. For spectra analyses a standard method of Fourier transformation was used. Coincidence main maxima on phi (r) curves and identity of Fourier transformation for calmodulin and parvalbumin in the 2-6 A interval allow to infer the identity of Ca2+-binding centers of calmodulin and parvalbumin.
D000818:Animals; D001665:Binding Sites; D001923:Brain Chemistry; D002135:Calcium-Binding Proteins / Q000032:analysis*; D002147:Calmodulin / Q000032:analysis*; D002417:Cattle; D066298:In Vitro Techniques; D010320:Parvalbumins / Q000032:analysis; D011487:Protein Conformation; D013052:Spectrometry, X-Ray Emission
D002135:Calcium-Binding Proteins; D002147:Calmodulin; D010320:Parvalbumins
Issledovanie struktury metallsviazyvaiushchikh tsentrov kal'modulina metodom EXAFS-spektroskopii.