نتایج جستجو برای: esterases

تعداد نتایج: 2030  

2011
CARLA SILVA ARTUR CAVACO-PAULO

Recent studies clearly indicate that the modification of synthetic polymers with enzymes is an environmentally friendly alternative to traditional chemical methods requiring harsh conditions. Some work already performed on polyamide 6.6 (nylon 6.6), polyethyleneterephthalate (PET) and polyacrylonitrile (PAN) revealed that surface functionalization of these materials is a key requirement for an ...

2009
DeEtta Hein Rudy J. Richardson Paul F. Hollenberg Peter Mancuso Jeanne Stuckey Daphne Louise Rudy Richardson Tim Kropp Angelo Napolitano Martin Philbert Rita Loch

Serine esterases are inhibited by dialkyl fluorinated aminophosphonate (FAP) compounds of general formula, (RO)2P(O)C(CF3)2NHS(O)2C6H5, where R = alkyl. It has been hypothesized that the active site serine of the esterase covalently attaches to the phosphoryl moiety of the FAP compound, resulting in formation of a dialkyl phosphate adduct that can age by net loss of an R-group. However, this me...

Journal: :The Journal of Experimental Medicine 1948
Charles Huggins Stanley H. Moulton

The tissues most effective in the enzymatic hydrolysis of acyl esters of p-nitrophenol by tissue extracts of the rat and dog were the liver, lung, pancreas, renal cortex, and testis; in the dog tracheal and vesical mucosae were also esterase-rich and the lens had appreciable activity. Esterase was at low concentration in the tissues of the rat for 4 and 5 days after birth, but an increase to ad...

Journal: :Zeitschrift fur Naturforschung. Teil B, Chemie, Biochemie, Biophysik, Biologie und verwandte Gebiete 1967
A Hassan F M Abdel-Hamid M R Bahig

The inhibition of rat-brain acetylcholinesterase with Sevin was shown to be partly reversible. The rate of progression of the irreversible inhibition is extremely slow and follows the kinetics of a unimolecular reaction, with K = 3.65 • 1 0 3 m i n 1 and t 0.5 190 minutes. The reversible inhibition of the enzyme was found to be of competitive nature. The dissociation constant of E —I (K\) was d...

Journal: :Journal of Histochemistry & Cytochemistry 1956

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