View source for File:Hydroxylamine reduction.GIF

Relative rates of hydroxylamine reduction by different Hbs.
(A) Time courses for the reaction of deoxyferrous rice nsHb1, SynHb,
Mb, Cgb, and Ngb with 150 μM HA, as measured by the oxidation of
the Hb (as in Figure 1). (B) Dependence of the reaction rate constant
(kobs) on [HA] for rice nsHb1, SynHb, and Mb, demonstrating that
reaction rates for rice nsHb1 and SynHb are 2 orders of magnitude
faster than Mb, having pseudo-first-order rates of 25 and 28 mM−1 s−1,
respectively, compared to 0.25 mM−1 s−1.