disease can be distinguished from one another and from control human polymerases by their elution behavior upon diethylaminoethyl cellulose chromatography and Sephadex gel filtration, by the magnesium ion concentration for optimal activity, by the stimulatory or inhibitory effects upon enzymatic activity of monovalent cations, and by sensitivity of enzymatic activity to heparin inhibition. Thes...

The penamaldic derivatives of amoxicillin, ampicillin, and penicillins G and V, stabilized with Zn(2+), were obtained from a methanolic medium. The enzymatic kinetic results show that the these derivatives elicit reversible inhibition of the enzyme metallo-beta-lactamase from Bacillus cereus, with inhibition constant values determined at pH 7.0 and 25 degrees C.

The effect of enzymatic hydrolysis apricot kernel protein with different proteases (Alcalase, pancreatin, pepsin, and trypsin) on the amino acid content, degree (DH), antioxidant, antibacterial characteristics resulting hydrolyzates was investigated in this study. composition acids (hydrophobic: ~35%; antioxidant: ~13%), EAA/TAA ratio (~34%), PER index (~1.85) indicates ability hydrolyzate as a...

As is the case in numerous natural processes, enzymatic phosphorylation can be used in the laboratory to influence the conformational populations of proteins. In nature, this information is used for signal transduction or energy transfer, but has also been shown to play an important role in many diseases like tauopathies or diabetes. With the goal of determining the effect of phosphorylation on...

Most surgeons seem to favour the former method. Even when the erisophake is used instead of forceps, the technique of zonulolotomy and delivery of the lens remains essentially the same. Since the introduction of A.C.T., however, mechanical zonulolotomy has been replaced by enzymatic zonulolysis and the extraction of the lens by seizing it at the 12 o'clock position is being increasingly practis...

Jing Wang*, Xiaoping Yuan, Baoguo Sun and Yanping Cao College of Chemistry and Environment Engineering, Beijing Technology and Business University, 11 Fucheng Road, CN-100048 Beijing, PR China Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing Technology and Business University, 11 Fucheng Road, CN-100048 Beijing, PR China Department of Science and...

Conventional insecticides are highly toxic to many living organisms as well as to the environment; consequently, new biorational and more specific approaches to pest control have been developed. In this paper, we present an update of those approaches resulting from studies on inhibition of enzymes involved in key processes of insects life, particularly growth, molting and development of larvae ...

background: the mechanism of hypoglycemic and hypolipidemic activities of pyrus biossieriana buhse leaf extract (pbble) and its phytochemical component arbutin, have not been well determined. the present study was performed to understand the hypoglycemic activity mechanisms of pbble and arbutin more clearly.methods: in vitro enzymatic carbohydrate digestion with pbble and arbutin was assessed u...

The effectiveness of a series of sulfhydryl compounds in inhibiting polyphenoloxidase (PPO) activity in a model system (chlorogenic acid solution) and in loquat juices was evaluated. Application of different concentrations of sulfhydryl compounds to chlorogenic acid solution and fresh loquat juice showed that l-cysteine appeared to be an effective browning inhibitor. The required concentration ...