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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: J Biol Inorg Chem. 2016 Jan 20;21(1):113–119. doi: 10.1007/s00775-016-1332-4

Table 3. Rate constants in different buffers (+100 mM NaCl, pH 8).

buffer pKa RuH107YOH109 RuH124YOH122
acetate 4.76 (1.3 ± 0.3) × 104 (5.0 ± 0.5) × 104
imidazole 7.05 (1.7 ± 0.2) × 104 (1.0 ± 0.2) × 105
Tris 8.07 (1.7 ± 0.2) × 104 (1.6 ± 0.2) × 105
borate 9.14 (1.8 ± 0.2) × 104 (1.7 ± 0.2) × 105