Pulsed Electron−Electron Double-Resonance Determination of Spin-Label Distances and Orientations on the Tetrameric Potassium Ion Channel KcsA
Endeward B, Butterwick JA, MacKinnon R, Prisner TF. Pulsed Electron−Electron Double-Resonance Determination of Spin-Label Distances and Orientations on the Tetrameric Potassium Ion Channel KcsA. Journal Of The American Chemical Society 2009, 131: 15246-15250. PMID: 19919160, PMCID: PMC2779547, DOI: 10.1021/ja904808n.Peer-Reviewed Original ResearchConceptsPELDOR dataElectron-electron double resonance measurementsTransverse spin relaxation timeProbe frequencySpin relaxation timeDouble resonance measurementsChannel KcsAMagnetic field strengthSpin-label distancesCentral channel axisPELDOR experimentsDetergent-solubilized samplesField strengthRelaxation timeOscillation frequencyResonance determinationQuantitative simulationChannel axisKcsAFrequencyOrientationMeasurementsAngle