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    Biochem Biophys Res Commun. 2001 Mar 2;281(3):788-94.

    The cytochrome c domain of dimeric cytochrome cd(1) of Paracoccus pantotrophus can be produced at high levels as a monomeric holoprotein using an improved c-type cytochrome expression system in Escherichia coli.

    Gordon EH, Steensma E, Ferguson SJ.

    Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, United Kingdom.

    Cytochrome cd(1) nitrite reductase from Paracoccus pantotrophus is a dimer; within each monomer there is a largely alpha-helical domain that contains the c-type cytochrome centre. The structure of this domain changes significantly upon reduction of the heme iron, for which the ligands change from His17/His69 to Met106/His69. Overproduction, using an improved Escherichia coli expression system, of this c-type cytochrome domain as an independent monomer is reported here. The properties of the independent domain are compared with those when it is part of dimeric holo or semi-apo cytochrome cd(1). Copyright 2001 Academic Press.

    PMID: 11237728 [PubMed - indexed for MEDLINE]

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