Казанский (Приволжский) федеральный университет, КФУ
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ФЕДЕРАЛЬНЫЙ УНИВЕРСИТЕТ
 
SLOW-BINDING INHIBITION OF ACETYLCHOLINESTERASE BY AN ALKYLAMMONIUM DERIVATIVE OF 6-METHYLURACIL: MECHANISM AND POSSIBLE ADVANTAGES FOR MYASTHENIA GRAVIS TREATMENT
Форма представленияСтатьи в зарубежных журналах и сборниках
Год публикации2016
Языкрусский
  • Петров Константин Александрович, автор
  • Библиографическое описание на языке оригинала Kharlamova A.D. Slow-binding inhibition of acetylcholinesterase by an alkylammonium derivative of 6-methyluracil: Mechanism and possible advantages for myasthenia gravis treatment / A.D. Kharlamova, S.V. Lushchekina, K.A. Petrov, E.D. Kots, F.Nachon, M. Villard-Wandhammer, I.V. Zueva, E. Krejci, V.S. Reznik, V.V. Zobov, E.E. Nikolsky, P. Masson // Biochemical Journal, Volume 473, Issue 9, 1 May 2016, Pages 1225-1236
    Аннотация Inhibition of human AChE (acetylcholinesterase) and BChE (butyrylcholinesterase) by an alkylammonium derivative of 6-methyluracil, C-547, a potential drug for the treatment of MG (myasthenia gravis) was studied. Kinetic analysis of AChE inhibition showed that C-547 is a slow-binding inhibitor of type B, i.e. after formation of the initial enzyme?inhibitor complex (Ki = 140 pM), an induced-fit step allows establishment of the final complex (Ki = 22 pM). The estimated koff is low, 0.05 -1 . On the other hand, reversible inhibition of human BChE is a fast-binding process of mixed-type (Ki = 1.77 μM; Ki = 3.17 μM). The crystal structure of mouse AChE complexed with C-547 was solved at 3.13 Å resolution. The complex is stabilized by cation-π , stacking and hydrogenbonding interactions. Molecular dynamics simulations of the binding/dissociation processes of C-547 and C-35 (a noncharged analogue) to mouse and human AChEs were performed.
    Ключевые слова 6-methyluracil; Acetylcholinesterase; Butyrylcholinesterase; Molecular modelling; Slow-binding inhibition; X-ray structure.
    Название журнала BIOCHEMICAL JOURNAL
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