Human cholinesterase has recently been sequenced and cloned. It is a glycoprotein of 4 identical subunits, each subunit containing 9 carbohydrate chains and 3.5 disuljide bonds. Protein folding is likely to be very similar in human cholinesterase and Torpedo acetylcholinesterase. The cholinesterases have no significant sequence homology with the serine proteases and seem to belong to a separate...

Cholinesterase (ChE) enzyme activity measurements are widely applied in aquatic organisms for water quality monitoring, especially for pesticide contamination in agricultural watersheds. These biomarkers are amenable to measurement in a variety of species, and are therefore useful for examining effects in model organisms relevant to the ecosystem of interest. However, extensive variation in ChE...

sideration in the literature [13]. As a result, the findings obtained in this investigation may be applicable to the study of PMA in other cell systems. According to Augustinsson [S], each esterase type exists in multiple forms and each animal species has its own typical spectrum of esterases in plasma and tissues [14]. In the presence of marked variations in location, form and activity, one mi...

Marcz M V S ~ ~L~,XNrS have been introduced during the past decade. Of all these relaxants, succmylcholine is the only drug with a fleeting action. This short duration of action has been ascribed to a rapid enzTmatlc destruction of succinylcholine in the body ( 1, 2). The only enzyme which is known to destroy succinylchohne m man ~s plasma eholinesterase. There are several synonyms for plasma c...

Young rats are more sensitive than adults to a single oral dose of chlorpyrifos, an organophosphorus pesticide. A direct comparison of chlorpyrifos effects in young (postnatal day 17; PND17), adolescent (PND27), and adult (70 days) Long-Evans rats was conducted to determine quantitative and possibly qualitative differences in sensitivity in terms of behavioral changes and cholinesterase (ChE; t...

Influenza C virus possesses specific neuraminate-O-acetylesterase as a receptor-destroying function. This enzymatic activity of the viral glycoprotein HEF (Hemagglutinin, esterase activity and fusion factor) can be visualized in situ by the use of distinct color substrates. Hereby the localization, as well as the quantity of synthesized HEF protein is detectable. We further developed the estera...