Crowning proteins: modulating the protein surface properties using crown ethers.

Crowning proteins: modulating the protein surface properties using crown ethers.
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DOI:
10.1002/anie.201405664
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发表时间:
2014-11-24
影响因子:
16.6
通讯作者:
Wang, Andrew H. -J.
Wang, Andrew H. -J.
中科院分区:
化学1区
文献类型:
--
作者:
Lee, Cheng-Chung;Maestre-Reyna, Manuel;Hsu, Kai-Cheng;Wang, Hao-Ching;Liu, Chia-I;Jeng, Wen-Yih;Lin, Li-Ling;Wood, Richard;Chou, Chia-Cheng;Yang, Jinn-Moon;Wang, Andrew H. -J.

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Crown ethers are small, cyclic polyethers that have found wide-spread use in phase-transfer catalysis and, to a certain degree, in protein chemistry. Crown ethers readily bind metallic and organic cations, including positively charged amino acid side chains. We elucidated the crystal structures of several protein-crown ether co-crystals grown in the presence of 18-crown-6. We then employed biophysical methods and molecular dynamics simulations to compare these complexes with the corresponding apoproteins and with similar complexes with ring-shaped low-molecular-weight polyethylene glycols. Our studies show that crown ethers can modify protein surface behavior dramatically by stabilizing either intra- or intermolecular interactions. Consequently, we propose that crown ethers can be used to modulate a wide variety of protein surface behaviors, such as oligomerization, domain–domain interactions, stabilization in organic solvents, and crystallization.
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