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. Author manuscript; available in PMC: 2014 Jan 22.
Published in final edited form as: Biochemistry. 2013 Jan 10;52(3):447–455. doi: 10.1021/bi301066z

Table 2.

Heme- histidine oxygen binding life time

Protein ligation Rmax(s−1) Kd,O2(mM) kox(s−1mM−2) t1/2(s)*
HP7 Open end 0.15 ± 0.01 0.037 ± 0.007 2300 ± 90 5.42 ± 0.04
HP7H7F Loop end 0.19 ± 0.01 0.15 ± 0.03 1300 ± 50 4.71 ± 0.04
*

Oxyferrous state half-life in air (21% O2).