Article
A catalytically deficient active site variant of PvuII endonuclease binds Mg(II) ions.
Biochemistry - 5 Sept 2000
Dupureur C M, Conlan L H
Abstract excerpt
In efforts to understand the mechanisms of many nucleic acid enzymes, the first site-directed mutations are made at conserved acidic active residues. Almost without exception, the low or null activities of the resulting variants are attributed to the importance of the acidic residue(s) to the ligation of required metal ions. Using (25)Mg NMR spectroscopy as a direct probe of metal ion binding and the homodimeric...
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