کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10765314 | 1050592 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mitochondrial intermediate peptidase: Expression in Escherichia coli and improvement of its enzymatic activity detection with FRET substrates
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کلمات کلیدی
PMSFE-64FRET substratephenylmethanesulfonylfluoride - phenylmethanesulfonyl fluorideFluorescence resonance energy transfer - انتقال انرژی رزونانس FluorescenceFRET - انتقال انرژی رزونانسی فورسترBacterial expression - بیان باکتریاییEnzymatic activity - فعالیت آنزیمیMitochondria - میتوکندریاPeptidase - پپتیداز
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Mitochondrial intermediate peptidase: Expression in Escherichia coli and improvement of its enzymatic activity detection with FRET substrates Mitochondrial intermediate peptidase: Expression in Escherichia coli and improvement of its enzymatic activity detection with FRET substrates](/preview/png/10765314.png)
چکیده انگلیسی
In the present study, soluble, functionally-active, recombinant human mitochondrial intermediate peptidase (hMIP), a mitochondrial metalloendoprotease, was expressed in a prokaryotic system. The hMIP fusion protein, with a poly-His-tag (6Ã His), was obtained by cloning the coding region of hMIP cDNA into the pET-28a expression vector, which was then used to transform Escherichia coli BL21 (DE3) pLysS. After isolation and purification of the fusion protein by affinity chromatography using Ni-Sepharose resin, the protein was purified further using ion exchange chromatography with a Hi-trap resource Q column. The recombinant hMIP was characterized by Western blotting using three distinct antibodies, circular dichroism, and enzymatic assays that used the first FRET substrates developed for MIP and a series of protease inhibitors. The successful expression of enzymatically-active hMIP in addition to the FRET substrates will contribute greatly to the determination of substrate specificity of this protease and to the development of specific inhibitors that are essential for a better understanding of the role of this protease in mitochondrial functioning.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 391, Issue 1, 1 January 2010, Pages 123-128
Journal: Biochemical and Biophysical Research Communications - Volume 391, Issue 1, 1 January 2010, Pages 123-128
نویسندگان
Marcelo F. Marcondes, Ricardo J.S. Torquato, Diego M. Assis, Maria A. Juliano, Mirian A.F. Hayashi, Vitor Oliveira,