Head-to-head prenyl tranferases: anti-infective drug targets.

Head-to-head prenyl tranferases: anti-infective drug targets.
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DOI:
10.1021/jm300208p
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发表时间:
2012-05-10
影响因子:
7.3
通讯作者:
Oldfield, Eric
Oldfield, Eric
中科院分区:
医学1区
文献类型:
--
作者:
Lin, Fu-Yang;Liu, Yi-Liang;Li, Kai;Cao, Rong;Zhu, Wei;Axelson, Jordan;Pang, Ran;Oldfield, Eric

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We report x-ray crystallographic structures of three inhibitors bound to dehydrosqualene synthase from Staphylococcus aureus: 1 (BPH-651), 2 (WC-9) and 3 (SQ-109). Compound 2 binds to the S2 site with its –SCN group surrounded by 4 hydrogen bond donors. With 1, we report two structures: in both, the quinuclidine head group binds in the allylic (S1) site with the side-chain in S2, but in the presence of PPi and Mg2+, the quinuclidine’s cationic center interacts with PPi and 3 Mg2+, mimicking a transition state involved in diphosphate ionization. With 3, there are again two structures. In one, the geranyl side-chain binds to either S1 or S2 and the adamantane head-group binds in S1. In the second, the side-chain binds to S2, while the headgroup binds to S1. These results provide structural clues for the mechanism and inhibition of the head-to-head prenyl transferases and should aid future drug design.
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