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Updated: Feb 27, 2026
Engineering Antiviral Agents via Surface Plasmon Resonance
Published on: June 14, 2022
Computational design of peptide ligands to target the intermolecular interaction between viral envelope protein and
Darong Xu1, Hongliang Bian1, Jinlan Cai1
1Yancheng Maternity and Child Health Care Hospital, Yancheng 224000, China.
Insights
Researchers computationally designed peptide ligands to block viral entry into pediatric cells. These peptides target the interaction between the virus large envelope protein (LHB) and the adaptin receptor (ADT), offering a novel therapeutic strategy.
Area of Science:
- Structural bioinformatics
- Virology
- Drug discovery
Background:
- Viral envelope proteins hijack cellular machinery for export in pediatric infections.
- The interaction between the virus large envelope protein (LHB) and the adaptin receptor (ADT) is crucial for this process.
Purpose of the Study:
- To computationally design peptide ligands targeting the LHB-ADT interaction.
- To develop novel therapeutic strategies against viral infections in children.
Main Methods:
- Determined sequence-specific amino acid preferences for ADT-binding peptides using structural bioinformatics.
- Employed a genetic evolution procedure to enhance peptide potency.
- Optimized high-affinity peptides based on computational structural analysis.
Main Results:
- Identified several peptide candidates that interact with ADT at micromolar levels.
- Revealed that potent peptides possess distinct N-terminal, hydrophobic core, and C-terminal regions.
- Found that peptide termini partially extend beyond the ADT active pocket, contributing to binding.
Conclusions:
- Successful computational design of peptide ligands targeting the LHB-ADT interaction.
- Demonstrated the potential of these peptides as antiviral agents.
- Provided insights into the structural requirements for effective peptide binding to ADT.
Abstract:
The recognition and binding of viral envelope protein to pediatric receptor subverts the membrane-trafficking apparatus to mediate virion export in young children. Here, we described a successful computational design of peptide ligands to target the intermolecular interaction between the virus large envelope protein (LHB) and adaptin receptor (ADT). Based on the crystal structure of ADT in complex with an oligopeptide segment corresponding to the core binding site of LHB, a sequence-specific amino acid preference profile was determined systematically for the ADT-binding peptides using structural bioinformatics approach. With the information harvested from the profile, a genetic evolution procedure was run to improve the biological potency of a peptide population generated randomly from the LHB. A number of potential hits were obtained from the evolution, and four were measured to interact with ADT at micromolar level. A high-affinity hit peptide was then optimized according to computational structural analysis. It is revealed that a potent peptide can be divided into three regions, i.e. a negatively charged region at N-terminus, a hydrophobic core region in middle, and a small, polar region at C-terminal tail. In addition, the two termini of peptide are partially out of the active pocket of ADT, thus contributing moderately to the peptide binding.
