Peroxynitrite-Mediated Nitration of the Stable Free Radical Tyrosine Residue of the Ribonucleotide Reductase Small Subunit†

Biochemistry ◽  
2000 ◽  
Vol 39 (16) ◽  
pp. 4640-4648 ◽  
Author(s):  
Olivier Guittet ◽  
Paulette Decottignies ◽  
Laurent Serani ◽  
Yann Henry ◽  
Pierre Le Maréchal ◽  
...  
Keyword(s):  
Free Radical ◽  
Ribonucleotide Reductase ◽  
Small Subunit ◽  
Tyrosine Residue ◽  
Stable Free Radical

scholarly journals Identification of the stable free radical tyrosine residue in ribonucleotide reductase

FEBS Letters ◽  
1985 ◽  
Vol 183 (1) ◽  
pp. 99-102 ◽  
Author(s):  
B.-M. Sjöberg ◽  
H. Eklund ◽  
J.A. Fuchs ◽  
J. Carlson ◽  
N.M. Standart ◽  
...  
Keyword(s):  
Free Radical ◽  
Ribonucleotide Reductase ◽  
Tyrosine Residue ◽  
Stable Free Radical

scholarly journals Enzymic modification of a tyrosine residue to a stable free radical in ribonucleotide reductase.

1983 ◽  
Vol 80 (6) ◽  
pp. 1492-1495 ◽  
Author(s):  
T. Barlow ◽  
R. Eliasson ◽  
A. Platz ◽  
P. Reichard ◽  
B. M. Sjoberg
Keyword(s):  
Free Radical ◽  
Ribonucleotide Reductase ◽  
Tyrosine Residue ◽  
Stable Free Radical

scholarly journals Tyrosyl free radical formation in the small subunit of mouse ribonucleotide reductase.

1990 ◽  
Vol 265 (26) ◽  
pp. 15758-15761 ◽  
Author(s):  
E. Ochiai ◽  
G.J. Mann ◽  
A. Gräslund ◽  
L. Thelander
Keyword(s):  
Free Radical ◽  
Ribonucleotide Reductase ◽  
Small Subunit ◽  
Radical Formation ◽  
Free Radical Formation

scholarly journals Radiation Inactivation of Ribonucleotide Reductase, an Enzyme with a Stable Free Radical

2000 ◽  
Vol 79 (4) ◽  
pp. 2155-2161 ◽  
Author(s):  
Gordon Bolger ◽  
Michel Liuzzi ◽  
Richard Krogsrud ◽  
Erika Scouten ◽  
Robert McCollum ◽  
...  
Keyword(s):  
Free Radical ◽  
Ribonucleotide Reductase ◽  
Stable Free Radical ◽  
Radiation Inactivation

Esr Indication of Heavy Metal Contamination of Urban Atmosphere

1993 ◽  
Vol 27 (7-8) ◽  
pp. 263-269 ◽  
Author(s):  
B. Iosefzon-Kuyavskaya ◽  
N. Myrlyan ◽  
A. Shames
Keyword(s):  
Heavy Metal ◽  
Air Pollution ◽  
Electron Spin Resonance ◽  
Free Radical ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Urban Atmosphere ◽  
Stable Free Radical ◽  
Spin Resonance ◽  
Line Characteristic

Electron Spin Resonance (ESR) was used for the examination oi dust samples collected from snow in an urban area. On the main doublet ESR line attributed to the signal of paramagnetic metals, a singlet line characteristic for stable free radical centers (FRC) was observed. A negative correlation of significant level between FRC signal intensity and heavy metal (HM) content was established. It was shown that FRC line intensity of dust may be used as a surrogate parameter for the estimation of air pollution by HM.

scholarly journals Microwave-Assisted Synthesis, Characterization, Antimicrobial and Antioxidant Activity of Some New Isatin Derivatives

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
G. Kiran ◽  
T. Maneshwar ◽  
Y. Rajeshwar ◽  
M. Sarangapani
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Radical Scavenging ◽  
Microwave Assisted Synthesis ◽  
Stable Free Radical ◽  
Ft Ir ◽  
Antimicrobial And Antioxidant Activity ◽  
New Compounds ◽  
Isatin Derivatives

A series of β-Isatin aldehyde-N,N′-thiocarbohydrazone derivatives were synthesized and assayed for theirin vitroantimicrobial and antioxidant activity. The new compounds were characterized based on spectral (FT-IR, NMR, MS) analyses. All the test compounds possessed a broad spectrum of activity having MIC values rangeing from 12.5 to 400 μg/ml against the tested microorganisms. Among the compounds3e,3jand3nshow highest significant antimicrobial activity. The free radical scavenging effects of the test compounds against stable free radical DPPH (α,α-diphenyl-β-picryl hydrazyl) and H2O2were measured spectrophotometrically. Compounds3j,3n,3l, and3e, respectively, had the most effective antioxidant activity against DPPH and H2O2scavenging activity.

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