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. Author manuscript; available in PMC: 2015 Jul 10.
Published in final edited form as: Inorg Chem. 2010 Jul 19;49(14):6330–6337. doi: 10.1021/ic902085s

Figure 5.

Figure 5

Variable Temperature EPR spectra of solutions of metHb:NO2− in HEPES buffer at pH 7.4. The sample included metHb at 0.65M and a twenty-fold molar excess (per heme) of NaNO2−. Spectra were obtained at the indicated temperatures in the range 100K to 175K. EPR spectra were recorded at 9.1 GHz with a 16.67 G/s sweep rate, a 0.5 s time constant, 5 G modulation amplitude, and 10 mW of microwave power.