Quantitative structure-activity relationships of antimicrobial fatty acids and derivatives against Staphylococcus aureus.
Fatty acids and derivatives (FADs) are resources for natural antimicrobials. In order to screen for additional potent antimicrobial agents, the antimicrobial activities of FADs against Staphylococcus aureus were examined using a microplate assay. Monoglycerides of fatty acids were the most potent class of fatty acids, among which monotridecanoin possessed the most potent antimicrobial activity. The conventional quantitative structure-activity relationship (QSAR) and comparative molecular field analysis (CoMFA) were performed to establish two statistically reliable models (conventional QSAR: R(2)=0.942, Q(2)(LOO)=0.910; CoMFA: R(2)=0.979, Q(2)=0.588, respectively). Improved forecasting can be achieved by the combination of these two models that provide a good insight into the structure-activity relationships of the FADs and that may be useful to design new FADs as antimicrobial agents.
Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China.
Hui
H
Zhang
Lu
L
Zhang
Li-juan
LJ
Peng
Xiao-wu
XW
Dong
Di
D
Wu
Vivian Chi-Hua
VC
Wu
Feng-Qin
FQ
Feng
D000890:Anti-Infective Agents / Q000737:chemistry / Q000494:pharmacology*; D005227:Fatty Acids / Q000737:chemistry / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D008958:Models, Molecular; D025341:Principal Component Analysis; D021281:Quantitative Structure-Activity Relationship; D011897:Random Allocation; D013211:Staphylococcus aureus / Q000187:drug effects* / Q000254:growth & development
D000890:Anti-Infective Agents; D005227:Fatty Acids