Positive allostery in metal ion binding by a cooperatively folded β-peptide bundle.
Positive allostery in metal ion binding by a cooperatively folded β-peptide bundle.
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DOI:
10.1021/ja508872q
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发表时间:
2014-10-22
影响因子:
15
通讯作者:
Schepartz, Alanna
中科院分区:
文献类型:
--
作者:
Miller, Jonathan P.;Melicher, Michael S.;Schepartz, Alanna
Metal ion binding is exploited by proteins in nature to catalyze reactions, bind molecules, and favor discrete structures, but it has not been demonstrated in β-peptides or their assemblies. Here we report the design, synthesis, and characterization of a β-peptide bundle that uniquely binds two Cd(II) ions in a distinct bicoordinate array. The two Cd(II) ions bind with positive allosteric cooperativity and increase the thermodynamic stability of the bundle by more than 50 °C. This system provides a unique, synthetic context to explore allosteric regulation and should pave the way to sophisticated molecular assemblies with catalytic and substrate-sensing functions that have historically not been available to de novo designed synthetic proteomimetics in water.
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15
作者:
Lee BC;Chu TK;Dill KA;Zuckermann RN
通讯作者:
Zuckermann RN
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作者:
Haase, Holly S.;Peterson-Kaufman, Kimberly J.;Levengood, Sheeny K. Lan;Checco, James W.;Murphy, William L.;Gellman, Samuel H.
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Gellman, Samuel H.
影响因子:
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通讯作者:
Gellman, Samuel H.
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影响因子:
64.8
作者:
GHADIRI, MR;GRANJA, JR;KHAZANOVICH, N
通讯作者:
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