FIGURE 4.
Continuous wave EPR spectra of single labeled reconstituted KtrB variants at room and low temperature (160 K). A, low and center field resonance peaks of EPR spectra of the spin-labeled variants recorded at room temperature. In order to allow comparison of the line widths of the center lines, ΔHPP, the value for Ser-317R1 is highlighted in gray. B, experimental EPR spectra recorded at low temperature. The gray area corresponds to the 2AZZ value of the hyperfine tensor for spin-labeled KtrB variant Ser-327R1.