Substitution of a pyridyl for the hydroxyphenyl moiety in the Green Fluorescent Protein analog p-hydroxybenzylidene-dimethylimidiazolinone produces a chromophore which "turns on" fluorescence in the presence of Zn(2+) or Cd(2+) ions. Such a phenomenon provides "proof of principle" for using GFP chromophores in a variety of sensing applications.
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| http://dx.doi.org/10.1039/b927313a | DOI Listing |
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