虚拟筛选
四肽
三肽
化学
抑制性突触后电位
五肽重复序列
黄嘌呤氧化酶
高尿酸血症
生物化学
数量结构-活动关系
肽
尿酸
立体化学
酶
生物
药物发现
神经科学
作者
Hao Chen,Ying-Di Ge,Xiaoyu He,Shanshan Li,Zhengfeng Fang,Li Cheng,Hao Chen
标识
DOI:10.1016/j.foodchem.2024.140741
摘要
Xanthine oxidase (XO) inhibitory peptides can prevent XO-mediated hyperuricemia. Currently, QSAR about XO inhibitory peptides with different lengths remains to be enriched. Here, XO inhibitory peptides were obtained from porcine visceral proteins through virtual-screening. A prediction model was established by machine-learning. Virtual-screening retained four lengths of peptides, including 3–6. Molecular-docking recognized their binding sites with XO and showed residues W, F, and G were the key amino acids. Datasets of XO inhibitory peptides therewith were established. The optimal model was used to generalize the peptides reported. Results showed that the R2 of the tripeptide, tetrapeptide, pentapeptide and hexapeptide in the generalisation test were R2 = 0.81, R2 = 0.82, R2 = 0.83 and R2 = 0.83, respectively. Overall, this work can serve as a reference for explaining the activity mechanism of XO inhibitory peptides and predicting the activity of XO inhibitory peptides.
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