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In silico structural and functional characterization of high-risk missense variants in MMP8, GZMK, and OASL genes associated with epidemic viral infections
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In silico structural and functional characterization of high-risk missense variants in MMP8, GZMK, and OASL genes associated with epidemic viral infections
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Journal Article
In silico structural and functional characterization of high-risk missense variants in MMP8, GZMK, and OASL genes associated with epidemic viral infections
2026
Overview
This research explores the structural and functional consequences of high-impact missense variants in three immune-related genes MMP8 (D253N, Y261S), GZMK (A42P, L122P), and OASL (W216C) with possible relevance to host response in epidemic viral infections. A layered computational workflow was implemented to predict pathogenicity, evaluate structural stability, and assess residue conservation. Subsequent modeling of protein dynamics included structural perturbation analyses, molecular docking, and long-timescale molecular dynamics simulations. Findings revealed that the D253N variant in MMP8 induces substantial deviations from native architecture, characterized by reduced molecular dimensions, lower solvent accessibility, and a broader conformational ensemble. Y261S, by contrast, preserved global folding features with restrained atomic fluctuations. In GZMK, the L122P mutation significantly increased local flexibility and altered compactness, while A42P had minor impact. The W216C substitution in OASL disrupted packing density and expanded surface exposure, indicating a relaxation of the native fold. Principal component analysis confirmed that D253N, L122P, and W216C drive enhanced structural variance relative to native forms. Despite retained ligand-binding capacity, structural rearrangements affected interaction patterns in docking complexes. These findings underscore the potential role of these variants in modifying protein behavior during immune responses. The results serve as a foundation for downstream validation studies on their involvement in infection susceptibility and immune dysregulation.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 631/154
/ 631/535
/ gene
/ GZMK
/ Humanities and Social Sciences
/ Humans
/ Middle East respiratory syndrome
/ MMP8
/ Molecular Docking Simulation
/ Molecular Dynamics Simulation
/ OASL
/ Principal components analysis
/ Science
/ SNP
/ Structure-function relationships
/ Virus Diseases - epidemiology
/ Viruses
