Kinetic studies on the complex formation of iron(III) with 4-isopropyltropolone by a high-pressure stopped-flow technique. Mechanistic difference between the hexaaquairon(III) ion and the pentaaquamonohydroxoiron(III) ion in their complexation

1983 ◽  
Vol 22 (2) ◽  
pp. 194-198 ◽  
Author(s):  
Koji Ishihara ◽  
Shigenobu Funahashi ◽  
Motoharu Tanaka
1979 ◽  
Vol 8 (6) ◽  
pp. 671-674 ◽  
Author(s):  
Noboru Takisawa ◽  
Muneo Sasaki ◽  
Fujitsugu Amita ◽  
Jiro Osugi

1984 ◽  
Vol 23 (25) ◽  
pp. 4341-4345 ◽  
Author(s):  
Peter J. Nichols ◽  
Yolande Fresard ◽  
Yves Ducommun ◽  
Andre E. Merbach

1970 ◽  
Vol 67 (5) ◽  
pp. 749-752 ◽  
Author(s):  
NAOKI HIGASHI ◽  
HIROHUMI SHOUN ◽  
KEITARO HIROMI ◽  
KEIJI YANO ◽  
KEI ARIMA

1996 ◽  
Vol 68 (17) ◽  
pp. 3045-3049 ◽  
Author(s):  
Pascal Bugnon ◽  
Gábor Laurenczy ◽  
Yves Ducommun ◽  
Pierre-Yves Sauvageat ◽  
André E. Merbach ◽  
...  

1972 ◽  
Vol 27 (10) ◽  
pp. 1172-1175 ◽  
Author(s):  
Naoki Higashi ◽  
Hirohumi Shoun ◽  
Keiji Yano ◽  
Κει Arima ◽  
Keitaro Hiromi

The spectrophotometric and spectrofluorometric investigations of the enzyme-substrate complex formation of p-hydroxybenzoate hydroxylase was made by the stopped-flow technique. The apparent velocity of the formation of the enzyme-substrate complex (the velocity of the absorbance change in visible and UV regions, and the velocity of the quenching of the fluorescence intensity in the FAD moiety of the holoenzyme by the substrate) was rapid enough to explain the maximal overall velocity (72 sec-1) or the activated anaerobic reduction rate (kredmax= 200 sec-1). The results were consistent with a two-step mechanism involving a rapid bimolecular association of enzyme and substrate, and a slower follow-up unimolecular process.


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