PMID: 12939141 , Related PDB ids: 1PPX, 1PUN, 1PUQ, 1PUS

Authors:

Massiah MA, Saraswat V, Azurmendi HF, Mildvan AS

Title:

Solution structure and NH exchange studies of the MutT pyrophosphohydrolase complexed with Mg(2+) and 8-oxo-dGMP, a tightly bound product.

Journal:

Biochemistry. 2003 Sep 2;42(34):10140-54.

Abstract:

To learn the structural basis for the unusually tight binding of 8-oxo-nucleotides to the MutT pyrophosphohydrolase of Escherichia coli (129 residues), the solution structure of the MutT-Mg(2+)-8-oxo-dGMP product complex (K(D) = 52 nM) was determined by standard 3-D heteronuclear NMR methods. Using 1746 NOEs (13.5 NOEs/residue) and 186 phi and psi values derived from backbone (15)N, Calpha, Halpha, and Cbeta chemical shifts, 20 converged structures were computed with NOE violations