Zn2+ chelating peptide GFLGSP: Characterization of structure/Zn2+ chelating mode and the potential mechanisms for promoting Zn2+ transport in Caco-2 cells
文献类型： 外文期刊
第一作者： Lin, Shanting
作者： Lin, Shanting;Li, Jun;Lin, Shanting;Li, Jun;Hu, Xiao;Chen, Shengjun;Huang, Hui;Wu, Yanyan;Hu, Xiao;Chen, Shengjun;Wu, Yanyan;Hu, Xiao;Lin, Shanting;Li, Zhenxing
作者机构：
关键词： Zn2+chelating peptide; Peptide-Zn2+complex; Chelating characterization; Zn2+transport rate; Transport mechanisms
期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：7.0； 五年影响因子：7.4 ）
ISSN： 0963-9969
年卷期： 2024 年 192 卷
页码：
收录情况： SCI
摘要： This study focused on exploring the Zn2+ chelating peptide GFLGSP: the characterization of structure/Zn2+ chelating mode and the potential mechanisms for promoting Zn2+ transport in Caco-2 cells. The findings revealed the bidentate chelating between Zn2+ and carboxyl oxygen atom in Pro6 residue. Thereafter, the secondary structure of GFLGSP remained unchanged, but there was an increase in zeta potential and particle size. Notably, the GFLGSP-Zn2+ complex enhanced the Zn2+ transport rate and modulated ZIP4 and ZNT1 expression in a Caco-2 cells monolayer model. As revealed by molecular docking analysis, GFLGSP interacted with ZIP4 through intermolecular hydrogen bonds as well as Van der Waals forces. The Zn2+ transport mechanisms of the GFLGSP-Zn2+ complex encompassed ZIP4 (vital channel), endocytosis (primary pathway) and paracellular transport (supplementary pathway). Based on these results, the tilapia skin collagen-derived GFLGSP hold promise as the potential dietary Zn2+ supplement.
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