Apparent Rate Constants and Percentage of Heme Transferred in Various Reactions.

a<p>The data were obtained using 3 µM heme donor and 30 µM each component in heme acceptor mixtures unless specified otherwise. Percentages of heme transferred were obtained at 30 min of the fast metHb/IsdB, metHb/NS-N1-MD-N2, and metHb/N2/NS-N1-MD reactions and at 12 h of the other slower reactions.</p>b<p>40 µM H64Y/V68F Mb was used.</p>c<p>8 µM NS-N1-MD was used.