期刊
MICROBIAL DRUG RESISTANCE
卷 23, 期 3, 页码 308-320出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/mdr.2015.0272
关键词
aminoacyl-tRNA synthetase; flavonoids; inhibitor
资金
- Ministry of Science and Higher Education [N N401 037236, N N405 126640]
- National Science Center [2012/05/N/NZ7/02157]
Tyrosyl-tRNA synthetases (TyrRSs) as essential enzymes for all living organisms are good candidates for therapeutic target in the prevention and therapy of microbial infection. We examined the effect of various polyphenols, alkaloids, and terpenessecondary metabolites produced by higher plants showing many beneficial properties for the human organism, on bacterial aminoacylation reaction. The most potent inhibitors of Escherichia coli TyrRS are epigallocatechin gallate, acacetin, kaempferide, and chrysin, whereas the enzymes from Staphylococcus aureus and Pseudomonas aeruginosa are inhibited mainly by acacetin and chrysin. Most of them act as competitive inhibitors. Structure-activity relationship showed that the most potent flavonoid inhibitors contain hydroxyl group at position 5 and 7 of A ring and OCH3 group at position 4 of B ring.
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