Binding and Action of Triphenylphosphonium Analog of Chloramphenicol upon the Bacterial Ribosome.
Binding and Action of Triphenylphosphonium Analog of Chloramphenicol upon the Bacterial Ribosome.
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DOI:
10.3390/antibiotics10040390
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发表时间:
2021-04-05
期刊:
影响因子:
--
通讯作者:
Polikanov YS
中科院分区:
文献类型:
--
作者:
Chen CW;Pavlova JA;Lukianov DA;Tereshchenkov AG;Makarov GI;Khairullina ZZ;Tashlitsky VN;Paleskava A;Konevega AL;Bogdanov AA;Osterman IA;Sumbatyan NV;Polikanov YS
Chloramphenicol (CHL) is a ribosome-targeting antibiotic that binds to the peptidyl transferase center (PTC) of the bacterial ribosome and inhibits peptide bond formation. As an approach for modifying and potentially improving the properties of this inhibitor, we explored ribosome binding and inhibitory properties of a semi-synthetic triphenylphosphonium analog of CHL—CAM-C4-TPP. Our data demonstrate that this compound exhibits a ~5-fold stronger affinity for the bacterial ribosome and higher potency as an in vitro protein synthesis inhibitor compared to CHL. The X-ray crystal structure of the Thermus thermophilus 70S ribosome in complex with CAM-C4-TPP reveals that, while its amphenicol moiety binds at the PTC in a fashion identical to CHL, the C4-TPP tail adopts an extended propeller-like conformation within the ribosome exit tunnel where it establishes multiple hydrophobic Van der Waals interactions with the rRNA. The synthesized compound represents a promising chemical scaffold for further development by medicinal chemists because it simultaneously targets the two key functional centers of the bacterial ribosome—PTC and peptide exit tunnel.
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DOI:
10.1093/toxsci/kfq085
发表时间:
2010-07
期刊:
Toxicological sciences : an official journal of the Society of Toxicology
影响因子:
--
作者:
Li CH;Cheng YW;Liao PL;Yang YT;Kang JJ
通讯作者:
Kang JJ
影响因子:
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影响因子:
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作者:
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通讯作者:
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DOI:
10.1073/pnas.1417334111
发表时间:
2014-11-11
影响因子:
11.1
作者:
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通讯作者:
Mankin, Alexander S.
影响因子:
5.6
作者:
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通讯作者:
Steitz, TA