The effect of dimerization on the catalytic activity of haemin

M. L. Kremer

doi:10.1016/0304-4165(73)90073-1

The effect of dimerization on the catalytic activity of haemin

M. L. Kremer^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The effect of dimerization of chloroprotoferrihaem on the catalytic decomposition of H₂O₂ has been studied. It has been shown that the dimer is catalytically inactive. The equilibrium constant of dimerization is 1 · 10³-3 · 10³ M^-1 in the pH range 6.5-8.0 at 0° C. Chloroprotoferrihaem dissolved initially in alkali is more extensively dimerized than that dissolved in phosphate. The possible reason for this difference is discussed.

Original language	English
Pages (from-to)	268-275
Number of pages	8
Journal	Biochimica et Biophysica Acta - General Subjects
Volume	297
Issue number	2
DOIs	https://doi.org/10.1016/0304-4165(73)90073-1
State	Published - 28 Feb 1973

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abstract = "The effect of dimerization of chloroprotoferrihaem on the catalytic decomposition of H2O2 has been studied. It has been shown that the dimer is catalytically inactive. The equilibrium constant of dimerization is 1 · 103-3 · 103 M-1 in the pH range 6.5-8.0 at 0° C. Chloroprotoferrihaem dissolved initially in alkali is more extensively dimerized than that dissolved in phosphate. The possible reason for this difference is discussed.",

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AB - The effect of dimerization of chloroprotoferrihaem on the catalytic decomposition of H2O2 has been studied. It has been shown that the dimer is catalytically inactive. The equilibrium constant of dimerization is 1 · 103-3 · 103 M-1 in the pH range 6.5-8.0 at 0° C. Chloroprotoferrihaem dissolved initially in alkali is more extensively dimerized than that dissolved in phosphate. The possible reason for this difference is discussed.

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The effect of dimerization on the catalytic activity of haemin

Abstract

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