Table 1 Observed rate constants and relative amplitudes obtained by fitting single-wavelength UV-Vis kinetics with a biexponential equation.

From: Interaction of human hemoglobin and semi-hemoglobins with the Staphylococcus aureus hemophore IsdB: a kinetic and mechanistic insight

IsdB-Hb complex

k1 (s−1)

Amp1 (%)

k2 (s−1)

Amp2 (%)

IsdB-MetHb

0.20 ± 0.01

67

0.053 ± 0.001

33

IsdB-α-semiMetHb

0.29 ± 0.01

88

0.039 ± 0.001

12

IsdB-β-semiMetHb

0.27 ± 0.01

84

0.037 ± 0.001

16

IsdBY440A-MetHb

0.22 ± 0.01

95

0.017 ± 0.001

5

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