Diffusion Coefficients of Biomolecules Using Long-Lived Spin States
Journal of the American Chemical Society2009Vol. 131(22), pp. 7498–7499
Citations Over TimeTop 10% of 2009 papers
Abstract
We report the first observation of long-lived states (LLS) having lifetimes T(LLS) that exceed the corresponding spin-lattice relaxation times T(1) by more than a factor 6 in a protein. Slow diffusion coefficients characteristic of large biomolecules can be determined by combining LLS methods with moderate pulsed field gradients (PFGs) available on commercial probeheads, as the extension of spin memory reduces the strain on the duration and/or strength of the PFGs. No isotope labeling of the biomolecule is necessary.
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