Kiefer H C, Congdon W I, Scarpa I S, Klotz I M
Biochemistry Division, Department of Chemistry, Northwestern University, Evanston, Illinois 60201.
Proc Natl Acad Sci U S A. 1972 Aug;69(8):2155-9. doi: 10.1073/pnas.69.8.2155.
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.
一种合成聚合物,即含有十二烷基(C(12)H(25))链作为结合位点和咪唑部分作为功能性催化基团的聚乙烯亚胺,通过一种类似于相应天然酶的两步机制催化酚硫酸酯的水解。定量速率研究给出的动力学参数表明,与未结合的咪唑相比,该聚合物(合成酶)将反应速率提高了10^12倍,与IIA型芳基硫酸酯酶相比提高了10^2倍。