Infoscience

Journal article

Nucleotide sequence coding for the flavoprotein subunit of the fumarate reductase of Escherichia coli.

The nucleotide sequence of the frdA gene, which encodes the flavoprotein subunit of the fumarate reductase, of Escherichia coli, has been determined. A polypeptide of Mr = 66,052, containing 602 amino acid residues, is predicted. In composition the FrdA protein strongly resembles the flavoprotein subunits of two succinate dehydrogenases. Moreover, a sequence of nine consecutive residues is common to the flavoprotein subunits from fumarate reductase and the beef heart succinate dehydrogenase. This sequence contains a histidyl residue which probably services as the site for attachment of the FAD cofactor to the reductase.

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