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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Metallacrowns as products of the aqueous medium self-assembly of histidinehydroxamic acid-containing polypeptides
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Metallacrowns as products of the aqueous medium self-assembly of histidinehydroxamic acid-containing polypeptides

机译：含组氨酸异羟肟酸多肽的水介质自组装产物的金属肽

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摘要

Self-assembly is a widely studied, spontaneous, and reversible phenomenon leading to the formation of the ordered structures by non-covalent specific interactions among starting molecules. In this work, a new template for the self-assembly of polypeptides based on peptides containing the C-terminal histidinehydroxamic acid moiety and Cu2+ ions is characterized. Two peptide (tripeptide and pentadecapeptide) hydroxamic acid systems were synthesized and their interactions with Cu2+ ions were investigated, revealing a high stability of the supramolecular assemblies formed. The supramolecular metallacrown-based L4Cu5 complexes exist at physiological pH in the presence of Cu2+ ions as is evidenced from the spectroscopic methods, ESI mass spectrometry, and physicochemical techniques.
机译：自组装是一种广泛研究的，自发的和可逆的现象，通过起始分子之间的非共价特异性相互作用导致有序结构的形成。在这项工作中，基于包含C端组氨酸异羟肟酸部分和Cu2 +离子的肽的多肽自组装的新模板被表征。合成了两个肽（三肽和十五肽）异羟肟酸体系，并研究了它们与Cu2 +离子的相互作用，揭示了所形成的超分子组装体的高稳定性。从光谱方法，ESI质谱和物理化学技术可以证明，基于超分子金属催乳素的L4Cu5络合物在存在Cu2 +离子的生理pH下存在。

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