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Identification and molecular docking study of novel angiotensin‐converting enzyme inhibitory peptides from Salmo salar using in silico methods
Author(s) -
Yu Zhipeng,
Chen Yang,
Zhao Wenzhu,
Li Jianrong,
Liu Jingbo,
Chen Feng
Publication year - 2018
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8908
Subject(s) - in silico , chemistry , inhibitory postsynaptic potential , peptide , enzyme , docking (animal) , biochemistry , salmo , angiotensin converting enzyme , biology , gene , fish <actinopterygii> , medicine , nursing , neuroscience , fishery , blood pressure , endocrinology
BACKGROUND In 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 . RESULTS Collagen from Salmo salar was digested in silico into hundreds of peptides. Results revealed that tetrapeptides PGAR and IGPR showed potent ACE inhibitory activity, with IC 50 values of 0.598 ± 0.12 and 0.43 ± 0.09 mmol 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. CONCLUSION Interaction 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. © 2018 Society of Chemical Industry