Catalytic accelerations of 10-fold by an enzyme-like synthetic polymer.
نویسندگان
چکیده
A synthetic polymer, polyethyleneimine containing dodecyl (C(12)H(25))-chains for binding sites and imidazole moieties for functional catalytic groups, catalyzes the hydrolysis of phenolic sulfate esters by a two-step mechanism resembling that of the corresponding natural enzyme. Quantitative rate studies give kinetic parameters that show that the polymer (synzyme) accelerates the rate 10(12)-fold compared to unbound imidazole, and 10(2)-fold compared to a type IIA aryl sulfatase enzyme.
منابع مشابه
Purification and Partial Characterization of a Thrombin-Like Enzyme (AH144) from Venom of Iranian Snake Agkistrodon Halys
The snake venom´s thrombin-like enzymes comprise a number of serine proteases, which are functionally and structurally related to thrombin. Purification and partial characterization of a thrombin-like enzyme from the venom of the Iranian snake, Agkistrodon halys, was the aim of this study. Purification was carried out by a combination of variety of chromatographic methods that included: gel...
متن کاملافزایش ویژگی‌های عملیاتی آنزیم اندوگلوکاناز از طریق تغییر اسیدآمینه‌ای
Background & Aims : Ethanol produced from plant cellulose is called bioethanol and is recognized as a unique sustainable liquid fuel with powerful economic and environmental effects. In the present study we aimed at integrate a cellulase gene in to yeast genome to have the enzyme secreted out of the cell. Subsequently cellulose is depredated to glucose by the enzyme, and then it is ferment ...
متن کاملInvestigation of the Effect of Plasma Polymerized Siloxane Coating for Enzyme Immobilization and Microfluidic Device Conception
This paper describes the impact of a physical immobilization methodology, using plasma polymerized 1,1,3,3, tetramethyldisiloxane, on the catalytic performance of β-galactosidase from Aspergillus oryzae in a microfluidic device. The β-galactosidase was immobilized by a polymer coating grown by Plasma Enhanced Chemical Vapor Deposition (PEVCD). Combined with a microchannel patterned in the silic...
متن کاملA Systematic Study on the Self-Assembly Behaviour of Multi Component Fmoc-Amino Acid-Poly(oxazoline) Systems
We report a systematic study of a modular approach to create multi-component supramolecular nanostructures that can be tailored to be both enzyme and temperature responsive. Using a straightforward synthetic approach we functionalised a thermal responsive polymer, poly(2-isopropyl-2-oxazoline), with fluorenylmethoxycarbonyl-amino acids that drive the self-assembly. Depending on the properties o...
متن کاملCharacterization of a Novel Intracellular Endopeptidase of the / Hydrolase Family from Streptomyces coelicolor A3(2)
In a proteasome-lacking mutant of Streptomyces coelicolor A3(2), an intracellular enzyme with chymotrypsinlike activity, absent from the wild type, was detected. Complementation that restored proteasome function did not suppress expression of the endopeptidase. Since the enzyme was not found in two other S. coelicolor proteasome mutants, its expression probably resulted from a secondary mutatio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 69 8 شماره
صفحات -
تاریخ انتشار 1972