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Role of His residues in Bacillus subtilis cytochrome b558 for haem binding and assembly of succinate: quinone oxidoreductase (complex II).

Molecular microbiology - 1 Jun 1990

Fridén H, Hederstedt L

Abstract excerpt

Cytochrome b558 in the cytoplasmic membrane of Bacillus subtilis constitutes the anchor and electron acceptor to the flavoprotein (Fp) and iron-sulphur protein (Ip) in succinate:quinone oxidoreductase, and seemingly contains two haem groups. EPR and MCD spectroscopic data indicate bis-imidazole ligation of the haem. Apo-cytochrome was found in the membrane fraction of haem-deficient B. subtilis, suggesting that...

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PMID: 2120540
DOI: 10.1111/j.1365-2958.1990.tb00677.x

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