Promotion of cyclization of linear pentapeptides and heptapeptide by different univalent metal ions |
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| Authors: | Ye Yun-hua Liu Mian Tang Yan-chun Jiang Xiaohui |
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| Institution: | Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, Department of Chemistry, Peking University, Beijing 100871, China. yhye@pku.edu.cn |
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| Abstract: | Univalent metal ions such as Na+, K+ and Cs+ can enhance not only the cyclization yields of some linear pentapeptides and heptapeptide but also their cyclization rates while some bivalent and trivalent metal ions such as Mg2+, Ca2+, Zn2+, Fe2+, Ni2+ and Cr3+ elevate neither the cyclization yields nor the cyclization rates and some of them prevent the cyclization. |
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