کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10574957 | 976680 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An extremely stable Ni(II) complex derived from the hydrolytic cleavage of the C-terminal tail of histone H2A
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی معدنی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: An extremely stable Ni(II) complex derived from the hydrolytic cleavage of the C-terminal tail of histone H2A An extremely stable Ni(II) complex derived from the hydrolytic cleavage of the C-terminal tail of histone H2A](/preview/png/10574957.png)
چکیده انگلیسی
The C-terminal blocked tetrapeptides SHHK- and SAHK-, which represent the fragments produced from the hydrolysis of the hexapeptides' -TASHHK-, -TESHHK-, and -TESAHK- complexes with Ni(II), were synthesized and their interactions with Ni(II) ions were studied potentiometrically and spectroscopically. Both tetrapeptides interact strongly with Ni(II) ions leading to square-planar complexes with 4N {NH2,2Nâ,Nim} coordination. The stability of the Ni-SHHK- complex is about 2 orders of magnitude higher than the Ni-SAHK- complex. Spectroscopic evidence and theoretical predictions suggest the positioning of the free imidazole ring, in the Ni-SHHK- complex, above the coordination plane, explaining the extra stability of the complex.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Inorganic Biochemistry - Volume 99, Issue 2, February 2005, Pages 637-643
Journal: Journal of Inorganic Biochemistry - Volume 99, Issue 2, February 2005, Pages 637-643
نویسندگان
Marios Mylonas, John C. Plakatouras, Nick Hadjiliadis, Konstantinos D. Papavasileiou, Vasilios S. Melissas,