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Electron Transfer from Haem to the Di‐Iron Ferroxidase Centre in Bacterioferritin
Author(s) -
Pullin Jacob,
Bradley Justin M.,
Moore Geoffrey R.,
Le Brun Nick E.,
Wilson Michael T.,
Svistunenko Dimitri A.
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202015965
Subject(s) - ceruloplasmin , redox , chemistry , electron transfer , metalloprotein , ferritin , biochemistry , escherichia coli , crystallography , photochemistry , enzyme , inorganic chemistry , gene
The iron redox cycle in ferritins is not completely understood. Bacterioferritins are distinct from other ferritins in that they contain haem groups. It is acknowledged that the two iron motifs in bacterioferritins, the di‐nuclear ferroxidase centre and the haem B group, play key roles in two opposing processes, iron sequestration and iron mobilisation, respectively, and the two redox processes are independent. Herein, we show that in Escherichia coli bacterioferritin, there is an electron transfer pathway from the haem to the ferroxidase centre suggesting a new role(s) haem might play in bacterioferritins.