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针对耐抗菌药物中不依赖辅因子的磷酸甘油酸变位酶的植物化学物质的虚拟筛选和分子动力学模拟

Virtual screening and molecular dynamics simulations of phytochemicals targeting cofactor-independent phosphoglycerate mutase in antimicrobial-resistant .

作者信息

Barik Krishnendu, Mandal Pranabesh, Arya Praffulla Kumar, Singh Durg Vijay, Kumar Anil

机构信息

Department of Bioinformatics, Central University of South Bihar, Gaya, 824236 India.

出版信息

3 Biotech. 2024 Oct;14(10):231. doi: 10.1007/s13205-024-04082-8. Epub 2024 Sep 11.

Abstract

poses a significant challenge in clinical treatment due to its increasing antimicrobial resistance. This study investigates alternative therapeutic approaches by targeting the cofactor-independent phosphoglycerate mutase (iPGM) enzyme with phytochemicals derived from ethnobotanical plants. In silico screening identified several promising inhibitors, with 2-carboxy-D-arabinitol demonstrating the highest binding affinity (- 9.77 kcal/mol), followed by gluconic acid (- 9.03 kcal/mol) and citric acid (- 8.68 kcal/mol). Further analysis through molecular dynamics (MD) simulations revealed insights into the binding mechanisms and stability of these phytochemicals within the iPGM active site. The MD simulations indicated initial fluctuations followed by stability, with intermittent spikes in RMSD values. The lowest RMSF values confirmed the stability of the ligand-protein complexes. Key residues, including Ser-61, Arg-188, Glu-62, Asp-397, and Arg-260, were found to play crucial roles in the binding and retention of inhibitors within the active pocket. These findings suggest that the identified phytochemicals could serve as novel antimicrobial agents against by effectively inhibiting iPGM activity.

摘要

由于其日益增加的抗菌耐药性,在临床治疗中构成了重大挑战。本研究通过使用源自民族植物学植物的植物化学物质靶向不依赖辅因子的磷酸甘油酸变位酶(iPGM)来研究替代治疗方法。计算机模拟筛选出了几种有前景的抑制剂,其中2-羧基-D-阿拉伯糖醇显示出最高的结合亲和力(-9.77千卡/摩尔),其次是葡萄糖酸(-9.03千卡/摩尔)和柠檬酸(-8.68千卡/摩尔)。通过分子动力学(MD)模拟的进一步分析揭示了这些植物化学物质在iPGM活性位点内的结合机制和稳定性。MD模拟表明最初有波动,随后趋于稳定,RMSD值有间歇性峰值。最低的RMSF值证实了配体-蛋白质复合物的稳定性。发现关键残基,包括Ser-61、Arg-188、Glu-62、Asp-397和Arg-260,在活性口袋内抑制剂的结合和保留中起关键作用。这些发现表明,所鉴定的植物化学物质可通过有效抑制iPGM活性作为对抗[此处原文缺失相关内容]的新型抗菌剂。

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