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.
复制标题

DOI:
10.1021/ja508872q
复制
发表时间:
2014-10-22
影响因子:
15
通讯作者:
Schepartz, Alanna
Schepartz, Alanna
中科院分区:
化学1区
文献类型:
--
作者:
Miller, Jonathan P.;Melicher, Michael S.;Schepartz, Alanna

文献摘要

参考文献

被引文献

相似文献

金属离子结合被自然界中的蛋白质利用来催化反应、结合分子并有利于离散结构,但它尚未在β-肽或其组装体中得到证实。在这里,我们报告的设计,合成和表征的β-肽束,独特地结合两个镉(II)离子在一个独特的双坐标阵列。两个Cd(II)离子以正的别构协同效应结合,并使束的热力学稳定性增加50 °C以上。该系统提供了一个独特的,合成的背景下,探索变构调节,并应铺平道路,复杂的分子组装与催化和底物传感功能,历史上没有从头设计的合成蛋白质模拟物在水中。
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.
DOI: 10.1021/ja802125x
发表时间: 2008-07-09
影响因子: 15
作者:
Lee BC;Chu TK;Dill KA;Zuckermann RN
通讯作者: Zuckermann RN
DOI: 10.1021/ja302469a
发表时间: 2012-05-09
影响因子: 15
作者:
Haase, Holly S.;Peterson-Kaufman, Kimberly J.;Levengood, Sheeny K. Lan;Checco, James W.;Murphy, William L.;Gellman, Samuel H.
通讯作者: Gellman, Samuel H.
DOI: 10.1016/b978-0-12-394292-0.00019-9
发表时间: 2013
影响因子: --
作者:
Johnson, Lisa M.;Gellman, Samuel H.
通讯作者: Gellman, Samuel H.
DOI: 10.1038/nature08304
发表时间: 2009-08-13
期刊: Nature
影响因子: 64.8
作者:
通讯作者: --
DOI: 10.1038/366324a0
发表时间: 1993-11-25
期刊: NATURE
影响因子: 64.8
作者:
GHADIRI, MR;GRANJA, JR;KHAZANOVICH, N
通讯作者: KHAZANOVICH, N