D R Sudnick

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Eu(III) laser excitation spectroscopy of the 7F0 leads to 5D0 transition reveals spectral features characteristic of the occupation of the CD and EF Ca(II)-binding sites of parvalbumin by Eu(III) ions. In addition, at pH 6.5, a signal attributable to binding at a third site is observed. This feature is abolished upon lowering the pH to 3.8. At pH 6.5, the(More)
The 488 nm line of the CW argon ion laser provides a convenient visible source for the direct excitation of the emissive 5D4 state of the Tb(III) ion. Room temperature emission spectra of Tb(III) in a variety of environments have been examined under relatively high resolution. The samples studied include structurally well-characterized crystalline solids,(More)
A laser-induced luminescence technique is introduced for probing the structure and equilibria of lanthanide complexes and lanthanide ion binding to macromolecules. The method involves the excitation of the 7F0 leads to 5D0 transition between nondegenerate levels in the europium(III) ion by means of an intense pulsed dye laser source. Excitation profits(More)
Eu(III) laser excitation spectroscopy of the 7F0 leads to 5D0 transition reveals spectral features characteristic of the occupation of Eu(III) ions in the S(1), S(3), and S(4) Ca-(II)-binding sites of thermolysin. Various hybrid Eu(III) thermolysin species were prepared in which the Eu(III) ion resides in the S(1) or S(3) and S(4) or all three(More)
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