A noncovalent peptide complex as a model for an early folding intermediate of cytochrome c

Biochemistry ◽  
1993 ◽  
Vol 32 (38) ◽  
pp. 10271-10276 ◽  
Author(s):  
Lawren C. Wu ◽  
Paul B. Laub ◽  
Gulnur A. Elove ◽  
Jannette Carey ◽  
Heinrich Roder
Keyword(s):  
Cytochrome C ◽  
Folding Intermediate ◽  
Peptide Complex

scholarly journals Amide protection in an early folding intermediate of cytochrome c

1998 ◽  
Vol 3 (4) ◽  
pp. 293-301 ◽  
Author(s):  
J Michael Sauder ◽  
Heinrich Roder
Keyword(s):  
Cytochrome C ◽  
Folding Intermediate

Phosphorylation-induced formation of a cytochrome c-peptide complex: a novel fluorescent sensing platform for protein kinase assay

2016 ◽  
Vol 52 (4) ◽  
pp. 776-779 ◽  
Author(s):  
Shuang Wu ◽  
Xiang-Juan Kong ◽  
Yao Cen ◽  
Ru-Qin Yu ◽  
Xia Chu
Keyword(s):  
Protein Kinase ◽  
Cytochrome C ◽  
Kinase Assay ◽  
C Peptide ◽  
Peptide Complex ◽  
Fluorescent Sensing ◽  
Sensing Platform

A novel fluorescent sensing platform has been developed for protein kinase assay based on the phosphorylation-induced formation of a cytochrome c-peptide complex.

Nucleic Acid Molecules Prepared by Monolayer Techniques

1972 ◽  
Vol 30 ◽  
pp. 178-179
Author(s):  
Dimitrij Lang
Keyword(s):  
Electron Microscopy ◽  
Standard Deviation ◽  
Nucleic Acid ◽  
Cytochrome C ◽  
Nucleic Acids ◽  
Contour Length ◽  
Sample Standard Deviation ◽  
Molecular Weights ◽  
Length Measurements ◽  
Protein Monolayer

The success of the protein monolayer technique for electron microscopy of individual DNA molecules is based on the prevention of aggregation and orientation of the molecules during drying on specimen grids. DNA adsorbs first to a surface-denatured, insoluble cytochrome c monolayer which is then transferred to grids, without major distortion, by touching. Fig. 1 shows three basic procedures which, modified or not, permit the study of various important properties of nucleic acids, either in concert with other methods or exclusively:1) Molecular weights relative to DNA standards as well as number distributions of molecular weights can be obtained from contour length measurements with a sample standard deviation between 1 and 4%.

Activation of cytochrome c to a peroxidase compound I-type intermediate by H2O2: relevance to redox signalling in apoptosis

2004 ◽  
Vol 71 ◽  
pp. 97-106 ◽  
Author(s):  
Mark Burkitt ◽  
Clare Jones ◽  
Andrew Lawrence ◽  
Peter Wardman
Keyword(s):  
Cytochrome C ◽  
Hydroxyl Radical ◽  
Redox Regulation ◽  
Chemotherapeutic Agents ◽  
Tyrosyl Radical ◽  
Compound I ◽  
Definitive Evidence ◽  
Enhanced Production ◽  
Physico Chemical

The release of cytochrome c from mitochondria during apoptosis results in the enhanced production of superoxide radicals, which are converted to H2O2 by Mn-superoxide dismutase. We have been concerned with the role of cytochrome c/H2O2 in the induction of oxidative stress during apoptosis. Our initial studies showed that cytochrome c is a potent catalyst of 2′,7′-dichlorofluorescin oxidation, thereby explaining the increased rate of production of the fluorophore 2′,7′-dichlorofluorescein in apoptotic cells. Although it has been speculated that the oxidizing species may be a ferryl-haem intermediate, no definitive evidence for the formation of such a species has been reported. Alternatively, it is possible that the hydroxyl radical may be generated, as seen in the reaction of certain iron chelates with H2O2. By examining the effects of radical scavengers on 2′,7′-dichlorofluorescin oxidation by cytochrome c/H2O2, together with complementary EPR studies, we have demonstrated that the hydroxyl radical is not generated. Our findings point, instead, to the formation of a peroxidase compound I species, with one oxidizing equivalent present as an oxo-ferryl haem intermediate and the other as the tyrosyl radical identified by Barr and colleagues [Barr, Gunther, Deterding, Tomer and Mason (1996) J. Biol. Chem. 271, 15498-15503]. Studies with spin traps indicated that the oxo-ferryl haem is the active oxidant. These findings provide a physico-chemical basis for the redox changes that occur during apoptosis. Excessive changes (possibly catalysed by cytochrome c) may have implications for the redox regulation of cell death, including the sensitivity of tumour cells to chemotherapeutic agents.

Solution structure of cytochrome b5 mutant (E44/48/56A/D60A) and its interaction with cytochrome c

2001 ◽  
Vol 268 (6) ◽  
pp. 1620-1630
Author(s):  
Yibing Wu ◽  
Yunhua Wang ◽  
Chengmin Qian ◽  
Jun Lu ◽  
Ercheng Li ◽  
...  
Keyword(s):  
Cytochrome C ◽  
Solution Structure ◽  
Cytochrome B5

Expression of sunflower cytochrome c mRNA is tissue-specific and controlled by nitrate and light

1997 ◽  
Vol 99 (2) ◽  
pp. 342-347 ◽  
Author(s):  
Silvina A. Felitti ◽  
Raquel L. Chan ◽  
Gabriela Gago ◽  
Estela M. Valle ◽  
Daniel H. Gonzalez
Keyword(s):  
Cytochrome C ◽  
Tissue Specific

A STUDY OF CYTOCHROME c AND CYTOCHROME b2 CORE IN THE OXIDIZED AND REDUCED STATES USING EXAFS AND XANES SPECTROSCOPIES

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-1143-C8-1146
Author(s):  
I. ASCONE ◽  
J. GOULON ◽  
A. BIANCONI ◽  
M. TEGONI ◽  
F. LABEYRIE
Keyword(s):  
Cytochrome C
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