The acid dissociation of haemin

Lea Singer*, M. L. Kremer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The acid dissociation constant of haemin has been determined in the temperature range of 0-30 °C. ΔG°, ΔH° and ΔS° of the dissociation are 11.4 kcal/mole, 5.0 kcal/mole and -21 cal/degree per mole, respectively (25 °C). These values are close to the corresponding changes in ferric haemoproteins and differ substantially from those in Fe3+. The significance of this result is discussed.

Original languageEnglish
Pages (from-to)21-29
Number of pages9
JournalBiochimica et Biophysica Acta - General Subjects
Volume273
Issue number1
DOIs
StatePublished - 26 Jun 1972

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