Modeling of Phosphoribosylpyrophosphate Synthetase from Thermus Thermophilus in Complex with ATP and Ribose 5-Phosphate


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Abstract

The positions of the substrates (ATP and ribose 5 phosphate) of phosphoribosylpyrophosphate synthetase from Thermus thermophilus were determined by molecular dynamics simulations. The simulation brought the system to an equilibrium state, with the binding poses of the ligands in the active site being stable. Based on the results of simulation of the complex, the environment of the substrates was analyzed and the amino-acid residues of the enzyme that form polar interactions with the substrates were identified. Candidate sites for mutagenesis, which can be mutated in order to broaden the substrate specificity toward ribose 5-phosphate, are proposed.

About the authors

D. D. Podshivalov

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow; Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics”
Russian Academy of Sciences; National Research Centre “Kurchatov Institute,”

Email: tostars@mail.ru
Russian Federation, Moscow, 117997; Moscow, 119333; Moscow, 123098

D. D. Sidorov-Biryukov

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow; Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics”
Russian Academy of Sciences

Email: tostars@mail.ru
Russian Federation, Moscow, 117997; Moscow, 119333

V. I. Timofeev

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow; Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics”
Russian Academy of Sciences; National Research Centre “Kurchatov Institute,”

Author for correspondence.
Email: tostars@mail.ru
Russian Federation, Moscow, 117997; Moscow, 119333; Moscow, 123098

A. A. Litunov

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow

Email: tostars@mail.ru
Russian Federation, Moscow, 117997

M. A. Kostromina

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow

Email: tostars@mail.ru
Russian Federation, Moscow, 117997

K. V. Sinitsyna

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow

Email: tostars@mail.ru
Russian Federation, Moscow, 117997

T. I. Muravieva

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow

Email: tostars@mail.ru
Russian Federation, Moscow, 117997

I. P. Kuranova

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow; Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics”
Russian Academy of Sciences; National Research Centre “Kurchatov Institute,”

Email: tostars@mail.ru
Russian Federation, Moscow, 117997; Moscow, 119333; Moscow, 123098

R. S. Esipov

Shemyakin–Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Moscow

Email: tostars@mail.ru
Russian Federation, Moscow, 117997

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