Double Electron−Electron Resonance Measured Between Gd3+ Ions and Nitroxide Radicals
Double electron− electron resonance has attracted growing attention as a technique to study
structure and conformational changes of biomacromolecules. Here, a new combination of
paramagnetic labels is experimentally tested, one being a commonly used nitroxide radical,
and the other being a Gd3+ ion. The Gd3+− nitroxide spin pair can serve as a good
substitute for the nitroxide− nitroxide pair of spin labels and potentially provides a link to
other experimental approaches dealing with structural information.
structure and conformational changes of biomacromolecules. Here, a new combination of
paramagnetic labels is experimentally tested, one being a commonly used nitroxide radical,
and the other being a Gd3+ ion. The Gd3+− nitroxide spin pair can serve as a good
substitute for the nitroxide− nitroxide pair of spin labels and potentially provides a link to
other experimental approaches dealing with structural information.
Double electron−electron resonance has attracted growing attention as a technique to study structure and conformational changes of biomacromolecules. Here, a new combination of paramagnetic labels is experimentally tested, one being a commonly used nitroxide radical, and the other being a Gd3+ ion. The Gd3+−nitroxide spin pair can serve as a good substitute for the nitroxide−nitroxide pair of spin labels and potentially provides a link to other experimental approaches dealing with structural information.
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