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. Author manuscript; available in PMC: 2014 Jul 31.
Published in final edited form as: J Am Chem Soc. 2013 Jul 16;135(30):10.1021/ja403734n. doi: 10.1021/ja403734n

Table 2.

Electron transfer rate constants for nitrotyrosine-modified azurins.

k hop k hop(calc) a k ss c khop/kss
Ru(H107) (7.7 ± 0.5) × 103 8.7 × 102 b (2.4 ± 0.5) × 102 d 32 ± 7
Ru(H126) (6.0 ± 0.5) × 103 2.3 × 103 (1.3 ± 0.6) × 102 e 46 ± 22
Ru(H124) (3.0 ± 0.5) × 105 1.3 × 106 (2.2 ± 0.2) × 104 e 14 ± 3
a

khop(calc) are from the hopping maps shown in Figure 6.

b

Calculated with ΔG°(NO2YO−109→RuIII) = 0.2 eV.

c

kss = ksingle-step for Ru(bpy)2imidazole(HisX)-labeled wild type azurin.