PMID:2644932
Citation |
Andrews, SC, Smith, JM, Guest, JR and Harrison, PM (1989) Amino acid sequence of the bacterioferritin (cytochrome b1) of Escherichia coli-K12. Biochem. Biophys. Res. Commun. 158:489-96 |
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Abstract |
The complete amino acid sequence of bacterioferritin (cytochrome b1) from Escherichia coli-K12 has been derived from the nucleotide sequence of the cloned gene. It comprises 158 amino acid residues giving an Mr of 18,495. The identity of the gene product was confirmed by an 87 residue N-terminal sequence obtained from the purified protein, but it differs significantly from much of the previously published partial amino acid sequence (1). Secondary structure prediction indicates a high alpha-helical content consistent with a 4-helix-bundle conformation. The fully assembled bacterioferritin molecule comprising 24 identical subunits and 12 haem moieties is a tetracosamer with an Mr of approximately 452,000. |
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Keywords |
Amino Acid Sequence; Amino Acids/analysis; Bacterial Proteins; Cloning, Molecular; Cytochrome b Group/ultrastructure; Escherichia coli/enzymology; Ferritins/ultrastructure; Molecular Sequence Data; Solubility |
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