Reinterpreting the mechanism of inhibition of Mycobacterium tuberculosis D-alanine:D-alanine ligase by D-cycloserine.
Reinterpreting the mechanism of inhibition of Mycobacterium tuberculosis D-alanine:D-alanine ligase by D-cycloserine.
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DOI:
10.1021/bi400839f
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发表时间:
2013-10-08
期刊:
影响因子:
2.9
通讯作者:
de Carvalho, Luiz Pedro S.
中科院分区:
文献类型:
--
作者:
Prosser, Gareth A.;de Carvalho, Luiz Pedro S.
d-Cycloserine is a second-line drug approved for use in the treatment of patients infected with Mycobacterium tuberculosis, the etiologic agent of tuberculosis. The unique mechanism of action of d-cycloserine, compared with those of other clinically employed antimycobacterial agents, represents an untapped and exploitable resource for future rational drug design programs. Here, we show that d-cycloserine is a slow-onset inhibitor of MtDdl and that this behavior is specific to the M. tuberculosis enzyme orthologue. Furthermore, evidence is presented that indicates d-cycloserine binds exclusively to the C-terminal d-alanine binding site, even in the absence of bound d-alanine at the N-terminal binding site. Together, these results led us to propose a new model of d-alanine:d-alanine ligase inhibition by d-cycloserine and suggest new opportunities for rational drug design against an essential, clinically validated mycobacterial target.
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影响因子:
5.4
作者:
Prosser, Gareth A.;de Carvalho, Luiz Pedro S.
通讯作者:
de Carvalho, Luiz Pedro S.
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4.9
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Sacchettini, James C.
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WALSH, CT
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McCammon, JA