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  • Database
    Andraos, John.
    Contents:
    People genealogy trees
    Idea genealogy trees
    Named constants
    Named units of measurement
    Named equations and laws in chemistry
    Concepts not named after people
    Named reagents, catalysts, and compounds
    Structures of named reagents
    Named organic reactions
    Named laboratory apparatus
    First papers in chemistry journals
    Reagent acronyms
    Origins of element names
    Element names in various languages
    Discoverers of elements of periodic table
    Glossaries (IUPAC references)
    Scientific genealogy master list
    Bibliography.
    Digital Access Database
  • Article
    Erman JE.
    Biochim Biophys Acta. 1975 Jul 27;397(1):36-42.
    The apparent bimolecular rate constant for the oxidation of dicyano-bis(1,10 phenanthroline) iron(II) by compound II of cytochrome c peroxidase (ferrocytochrome c; hydrogen-peroxide oxidoreductase EC 1.11.1.5) has been measured over the pH range 2.5-11.0 at 0.1 M ionic strength, 25 degrees C, by the stopped-flow technique. An ionizable group in the enzyme, with a pKa of 4.5, strongly influences the electron transfer rate between the ferrous complex and the oxidized site in the enzyme. The electron transfer is fastest when the group is protonated, with a rate constant of 2.9 - 10-5 M--1 - s-1. The rate constantdecreases over three orders of magnitude when the proton dissociates. The apparent bimolecular rate constant for the oxidation of the ferrous complex by compound I of cytochrome c peroxidase was determined between pH 3.5 and 6. Under all conditions where this rate constant could be measured it was about three times larger than that for the oxidation by compound II.
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