3D Structure of D-Аmino Acid Тransaminase from Aminobacterium colombiense in Complex with D-Cycloserine

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Аннотация

D-cycloserine inhibits pyridoxal 5'-phosphate (PLP)-dependent enzymes both reversibly and irreversibly. As an alanine racemase inhibitor, D-cycloserine is used in drug therapy in the treatment of tuberculosis. Several products of the interaction of D-cycloserine and PLP in the active site of the enzyme are known. The crystal structure of the complex of PLP-dependent D-amino acid transaminase from the bacteria Aminobacterium colombiense (Amico) with D-cycloserine obtained at a resolution of 1.9 Å is presented, in which the ring-opened adduct of PLP and D-cycloserine was discovered. In addition, the interaction of D-cycloserine with Amico has been characterized by the kinetic and spectral methods, various products of the interaction of D-cycloserine and PLP in the active site of transaminase have been determined, and the coordination of D-cycloserine and PLP adducts in the Amico active site has been analyzed. It is established that the products of the interaction of D-cycloserine with PLP in the Amico active site are several compounds, including PLP and DCS adducts in the cyclic and open forms, oxime formed by PMP and β-aminooxy-D-alanine, and PMP and β-aminooxypyruvate.

Авторлар туралы

S. Shilova

Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology,” Russian Academy of Sciences, 119071, Moscow, Russia

Email: zavyalovasonya@yandex.ru
Россия, Москва

I. Matyuta

Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology,” Russian Academy of Sciences, 119071, Moscow, Russia

Email: zavyalovasonya@yandex.ru
Россия, Москва

E. Bezsudnova

Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology,” Russian Academy of Sciences, 119071, Moscow, Russia

Email: zavyalovasonya@yandex.ru
Россия, Москва

M. Minyaev

Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russia

Email: mminyaev@ioc.ac.ru
Россия, Москва

A. Nikolaeva

Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology,” Russian Academy of Sciences, 119071, Moscow, Russia; National Research Centre “Kurchatov Institute”, 123182, Moscow, Russia

Email: zavyalovasonya@yandex.ru
Россия, Москва; Россия, Москва

V. Popov

Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology,” Russian Academy of Sciences, 119071, Moscow, Russia

Email: zavyalovasonya@yandex.ru
Россия, Москва

K. Boyko

Bach Institute of Biochemistry, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences, 117071, Moscow, Russia

Хат алмасуға жауапты Автор.
Email: boiko_konstantin@inbi.ras.ru
Россия, Москва

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© С.А. Шилова, И.О. Матюта, Е.Ю. Безсуднова, М.Е. Миняев, А.Ю. Николаева, В.О. Попов, К.М. Бойко, 2023

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