Food and Fermentation Industries >

2024 , Vol. 50 >Issue 19: 180 - 190

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.040013

Structural identification of corn peptides and virtual screening of peptides for the prevention of alcoholic liver injury

  • MENG Ganlu ,
  • OU Liming ,
  • ZHANG Xinxue ,
  • LIU Rui ,
  • WANG Hualei ,
  • TANG Yanbin ,
  • LIU Wenying
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  • 1(China National Research Institute of Food and Fermentation Industries,Beijing Engineering Research Center of Protein & Functional Peptides, Beijing 100015, China)
    2(National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Key Laboratory of Trace Element Nutrition, National Health and Family Planning Commission of the People's Republic of China, Beijing 100050, China)

Received date: 2024-05-27

  Revised date: 2024-07-02

  Online published: 2024-10-29

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Abstract

To investigate the preventive effects of corn peptides on alcoholic liver injury, high-performance liquid chromatography-tandem mass spectrometry was used to identify the composition and sequence of corn peptides.And the peptides with preventive activity of alcoholic liver injury were screened from the identified corn peptides by molecular coupling method and pharmacokinetic and toxicological simulations of the peptides were also performed.The results showed that three peptides, Ile-Pro (IP), Ala-Pro (AP), and Val-Ala-Tyr-Pro-Glu (VAYPE), were identified from the corn peptides by product ion scanning and quantitative analysis with multiple reaction monitoring.The peptides were molecularly docked to the receptors of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase 2*2 (ALDH2*2).After analyzing the binding energies and the interaction forces of each docking, it was found that IP and VAYPE can bind with the receptors of ADH and ALDH well.Therefore, both IP and VAYPE can prevent alcoholic liver injury by accelerating alcohol degradation.After toxicological analysis, all three peptides were non-toxic, non-carcinogenic, non-sensitizing, non-mutagenic, and had good water solubility.In this paper, a fast and convenient molecular docking method was used for screening the peptides, which is more efficient than the traditional enzymatic method.Moreover, the method provided new thoughts for the screening of bio-active peptides of animal and plant origin, and this paper lays the foundation for the in-depth study of the activity of corn peptides in the prevention of alcoholic liver injury.

Key words： corn peptide; peptide identification; alcoholic liver injury; molecular docking

Cite this article

MENG Ganlu , OU Liming , ZHANG Xinxue , LIU Rui , WANG Hualei , TANG Yanbin , LIU Wenying . Structural identification of corn peptides and virtual screening of peptides for the prevention of alcoholic liver injury[J]. Food and Fermentation Industries, 2024 , 50(19) : 180 -190 . DOI: 10.13995/j.cnki.11-1802/ts.040013

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