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J Bacteriol. 1994 January; 176(2): 520-523

research-article

Zinc, a structural component of adenylate kinases from gram-positive bacteria.

Unité de Biochimie des Régulations Cellulaires, Institut Pasteur, Paris, France.

ABSTRACT

The recent finding that Bacillus stearothermophilus adenylate kinase contains a zinc atom coordinated to four cysteines prompted us to investigate the metal-binding properties of the enzyme from various bacteria. We conclude that zinc was present only in adenylate kinase from gram-positive species and that this property is correlated with the presence of three or four Cys residues in the sequence Cys-X2-Cys-X16-Cys-X2-Cys/Asp, in which X stands for different amino acid residues.

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