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Mutational, kinetic, and NMR studies of the mechanism of E. coli GDP-mannose mannosyl hydrolase, an unusual Nudix enzyme.
Legler PM, Massiah MA, Mildvan AS. Legler PM, et al. Among authors: mildvan as. Biochemistry. 2002 Sep 3;41(35):10834-48. doi: 10.1021/bi020362e. Biochemistry. 2002. PMID: 12196023
M., Massiah, M. A., Bessman, M. J., and Mildvan, A. S. (2000) Biochemistry 39, 8603-8608). Using the structure and mechanism of MutT, the prototypical Nudix enzyme as a guide, we detected six catalytic residues of GDPMH, three of which were unique to GDPMH, by the k …
M., Massiah, M. A., Bessman, M. J., and Mildvan, A. S. (2000) Biochemistry 39, 8603-8608). Using the structure and mechanism of MutT, …
Interactions of the products, 8-oxo-dGMP, dGMP, and pyrophosphate with the MutT nucleoside triphosphate pyrophosphohydrolase.
Saraswat V, Massiah MA, Lopez G, Amzel LM, Mildvan AS. Saraswat V, et al. Among authors: mildvan as. Biochemistry. 2002 Dec 31;41(52):15566-77. doi: 10.1021/bi020552p. Biochemistry. 2002. PMID: 12501185
Changing the metal activator from Mg(2+) to Mn(2+) had little effect on the K(I)(sl)(o)(pe) of dGMP or of 8-oxo-dGMP, consistent with the second-sphere enzyme-M(2+)-H(2)O-NTP-M(2+) complex found by NMR (Lin, J., Abeygunawardana, C., Frick, D. N., Bessman, M. J., and Mildvan …
Changing the metal activator from Mg(2+) to Mn(2+) had little effect on the K(I)(sl)(o)(pe) of dGMP or of 8-oxo-dGMP, consistent with the se …
Catalytic role of the amino-terminal proline in 4-oxalocrotonate tautomerase: affinity labeling and heteronuclear NMR studies.
Stivers JT, Abeygunawardana C, Mildvan AS, Hajipour G, Whitman CP, Chen LH. Stivers JT, et al. Among authors: mildvan as. Biochemistry. 1996 Jan 23;35(3):803-13. doi: 10.1021/bi951077g. Biochemistry. 1996. PMID: 8547260
Finally, the pH dependence of kinact/KI for affinity labeling by 3-BP yields a pKa value of 6.7 +/- 0.3, in reasonable agreement with the pKa values found for kcat/KM for the non-sticky substrate 2-hydroxy-2,4-pentadienoate and by direct NMR titration of Pro-1 [Stivers, J. T., Ab …
Finally, the pH dependence of kinact/KI for affinity labeling by 3-BP yields a pKa value of 6.7 +/- 0.3, in reasonable agreement with the pK …
222 results