期刊
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
卷 98, 期 10, 页码 3907-3914出版社
WILEY
DOI: 10.1002/jsfa.8908
关键词
in silico; collagen; ACE inhibitory peptides; molecular docking
资金
- Beijing Advanced Innovation Center for Food Nutrition and Human Health [20181036]
BACKGROUNDIn order to circumvent some challenges of the classical approach, the in silico method has been applied to the discovery of angiotensin-converting enzyme (ACE) inhibitory peptides from food proteins. In this study, some convenient and efficient in silico tools were utilized to identify novel ACE inhibitory peptides from Salmo salar. RESULTSCollagen from Salmo salar was digested in silico into hundreds of peptides. Results revealed that tetrapeptides PGAR and IGPR showed potent ACE inhibitory activity, with IC50 values of 0.5980.12 and 0.43 +/- 0.09mmol L-1, respectively. The molecular docking result showed that PGAR and IGPR interact with ACE mostly via hydrogen bonds and attractive charge. Peptide IGPR interacts with Zn+ at the ACE active site, showing high inhibitory activity. CONCLUSIONInteraction with Zn+ in ACE may lead to higher inhibitory activity of peptides, and Pi interactions may promote the effect of peptides on ACE. The in silico method can be an effective method to predict potent ACE inhibitory peptides from food proteins. (c) 2018 Society of Chemical Industry
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