EPR spin trapping of protein radicals

TY - JOUR

T1 - EPR spin trapping of protein radicals

AU - Davies, Michael Jonathan

AU - Hawkins, Clare Louise

PY - 2004

Y1 - 2004

N2 - Electron paramagnetic resonance (EPR) spin trapping was originally developed to aid the detection of low-molecular-mass radicals formed in chemical systems. It has subsequently found widespread use in biology and medicine for the direct detection of radical species formed during oxidative stress and via enzymatic reactions. Over the last 15 years this technique has also found increasing use in detecting and identifying radicals formed on biological macromolecules as a result of either radical reactions or enzymatic processes. Though the EPR signals that result from the trapping of large, slowly tumbling radicals are often broad and relatively poor in distinctive features, a number of techniques have been developed that allow a wealth of information to be obtained about the nature, site, and reactions of such radicals. This article summarizes recent developments in this area and reviews selected examples of radical formation on proteins.

AB - Electron paramagnetic resonance (EPR) spin trapping was originally developed to aid the detection of low-molecular-mass radicals formed in chemical systems. It has subsequently found widespread use in biology and medicine for the direct detection of radical species formed during oxidative stress and via enzymatic reactions. Over the last 15 years this technique has also found increasing use in detecting and identifying radicals formed on biological macromolecules as a result of either radical reactions or enzymatic processes. Though the EPR signals that result from the trapping of large, slowly tumbling radicals are often broad and relatively poor in distinctive features, a number of techniques have been developed that allow a wealth of information to be obtained about the nature, site, and reactions of such radicals. This article summarizes recent developments in this area and reviews selected examples of radical formation on proteins.

KW - Artifacts

KW - Electron Spin Resonance Spectroscopy

KW - Free Radicals

KW - Oxidation-Reduction

KW - Proteins

KW - Spin Trapping

U2 - 10.1016/j.freeradbiomed.2003.12.013

DO - 10.1016/j.freeradbiomed.2003.12.013

M3 - Journal article

C2 - 15082061

SN - 0891-5849

VL - 36

SP - 1072

EP - 1086

JO - Free Radical Biology & Medicine

JF - Free Radical Biology & Medicine

IS - 9

ER -