کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2090496 1081505 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Metal/protein ratio determination in the Rhodobacter capsulatus cytoplasmic pyrophosphatase enzyme by particle induced X-ray emission
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
Metal/protein ratio determination in the Rhodobacter capsulatus cytoplasmic pyrophosphatase enzyme by particle induced X-ray emission
چکیده انگلیسی
Inorganic pyrophosphatases are divided in two families, which differ both in structure and mechanism. All of them incorporate in its structure divalent metal cations. In 2003, it was reported for the first time that Rhodobacter capsulatus cytoplasmic pyrophosphatase belongs to family II. It is expected then, that this enzyme contains metal elements in its structure; however, this characterization has not been carried out yet. A fine application of accelerators is the use of proton beams to induce X-ray emission (PIXE) for analyzing the composition of biological macromolecules. The purpose of this work is to complement R. capsulatus cytoplasmic pyrophosphatase characterization by determining the presence of metal elements in its structure. Three different strategies were used: PAGE-PIXE, PAGE-Digestion-PIXE, and Dialysis-PIXE and when metals were found the metal/enzyme ratio was calculated. Only Cobalt was found to be associated to the enzyme chemical structure in a ratio 3 Co/enzyme.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Microbiological Methods - Volume 84, Issue 2, February 2011, Pages 272-277
نویسندگان
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