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dc.contributor.author刘絮
dc.contributor.author彭苗苗
dc.contributor.author郭艳春
dc.contributor.author曹书霞
dc.contributor.author赵玉芬
dc.date.accessioned2016-05-17T02:54:39Z
dc.date.available2016-05-17T02:54:39Z
dc.date.issued2015-9-15
dc.identifier.citation郑州大学学报(理学版),2015,(3):85-89
dc.identifier.issn1671-6841
dc.identifier.otherZZDZ201503016
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/107186
dc.description.abstract利用核磁滴定法研究了极性链状二肽(均为ll构型)与金属离子之间的相互作用.极性二肽在与一价金属离子相互作用时,两者间的化学计量比为1∶1,并求得lI+与10种极性二肽结合常数的大小,其中与l-glu-l-glu的结合常数最大,这可能与l-glu-l-glu含有较多的富电子原子有关.在此基础上又研究了Cu2+,zn2+,CO2+3种二价金属离子与极性二肽间的相互作用,结果表明,二价金属离子与二肽间的相互作用是通过两步完成的.
dc.description.abstractThe interactions of 10 polar chain dipeptides( L-L configuration) with metal ions were examined by NMR.These polar chain dipeptides exhibited a tremendous selectivity toward monovalent mental ion,showing a stoichiometric binding with 1∶ 1,and the association constants of dipeptides with Li+were acquired.The results showed that L-Glu-L-Glu had stronger binding ability toward Li+ions than other dipeptides,and suggested the electron-rich atoms in L-Glu-L-Glu molecular were favorable for the interaction with metal ions.Furthermore,the interactions of divalent metal ions( Cu2 +,Zn2 +,Co2 +) with 10 polar chain dipetieds were studied,which implied the interaction between them was carried out in two stages.
dc.description.sponsorship国家自然科学青年基金资助项目;编号21105091
dc.language.isozh_CN
dc.subject核磁共振
dc.subject极性二肽
dc.subject金属离子
dc.subject结合常数
dc.subjectNMR
dc.subjectpolar dipeptide
dc.subjectmetal ion
dc.subjectassociation constant
dc.title利用NMR技术研究极性二肽与金属离子间的相互作用
dc.title.alternativeStudy of the Interaction Between Polar Dipeptides and Metal Ions by NMR
dc.typeArticle


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