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. 2011 May 17;50(24):5443–5452. doi: 10.1021/bi200369p

Table 2. Kinetic Parameters of Heme Binding and Transfer.

    off rate ± SE (×10–3 s–1)
   
  KD ± SE (heme; μM) kfast kslow ktransfer ± SE (s–1) KDa ± SE (μM)
IsdB-N2 WT <0.38 ± 0.06 28 ± 3 4.8 ± 0.02 81.5 ± 5.7 18.6 ± 3.2
IsdB-N2 M362L <0.49 ± 0.09 130 ± 11 13 ± 0.04 34.4 ± 2.4 16.5 ± 3.5
a

Estimated dissociation constant for the protein complexed with IsdA-N1.