Thermodynamics, Kinetics and Mechanisms of Noncompetitive Allosteric Inhibition of Chymotrypsin by Dihydrolipoic Acid-Coated Gold Nanoclusters

Autor: Wen-Qi Chen, Miao-Miao Yin, Peng-Jun Song, Xiao-Hang He, Feng-Lei Jiang, Yi Liu
Rok vydání: 2020
Předmět:
Zdroj: Langmuir. 36:6447-6457
ISSN: 1520-5827
0743-7463
DOI: 10.1021/acs.langmuir.0c00699
Popis: Enzymes are an important class of biomacromolecules which catalyze many metabolic processes in living systems. Nanomaterials can be synthesized with tailored sizes as well as desired surface modifications, thus acting as promising enzyme regulators. Fluorescent gold nanoclusters (AuNCs) are a representative class of ultrasmall nanoparticles (USNPs) with sizes of ∼2 nm, smaller than most of proteins including enzymes. In this work, we chose α-chymotrypsin (ChT) and AuNCs as the model system. Activity assays and inhibition kinetics studies showed that dihydrolipoic acid (DHLA)-coated AuNCs (DHLA-AuNCs) had a high inhibitory potency (
Databáze: OpenAIRE