کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1316723 | 976477 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Specific type of interactions in the quaternary system of Cu(II), adenosine 5â²-triphosphate, 1,11-diamino-4,8-diazaundecane and uridine
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Complexation reactions in the quaternary system Cu/ATP/3,3,3-tet/Urd have been studied. The stability constants of the complexes of the Cu(ATP)(3,3,3-tet)Hx(Urd) type have been determined by computer analysis of the potentiometric titration. On the basis of the results of spectroscopic as well as equilibrium studies, the mode of interactions has been proposed. Metal ions coordinate phosphate groups of ATP and nitrogen atoms of polyamine. It has been established that in the conditions of the complex Cu(ATP)(3,3,3-tet) formation, uridine introduced into the Cu(II)/ATP/3,3,3-tet ternary system is involved in hydrogen bonding with the endocyclic nitrogen atoms N(1) and N(7) of the ATP purine ring and formation of the adduct Cu(ATP)(3,3,3-tet)H(Urd) is observed. Introduction of metal ions into the system changes substantially the mode of interactions between complementary base pairs relative to that proposed in the Watson and Crick model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Inorganic Biochemistry - Volume 101, Issue 10, October 2007, Pages 1362-1369
Journal: Journal of Inorganic Biochemistry - Volume 101, Issue 10, October 2007, Pages 1362-1369
نویسندگان
Anna Gasowska, Renata Jastrzab, Lechoslaw Lomozik,