Chimeric Peptides for Crop Viral Protection
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Solution Overview
Problem
Current agricultural technologies lack effective antiviral compounds to safely and efficiently protect commercially valuable crops from various viral infections, such as grapevine leafroll and red blotch, cucumber mosaic virus, and tomato spotted wilt virus, which cause significant yield losses and disrupt plant growth.
Innovation Solution
Development of chimeric peptides comprising a recognition domain that binds to viral coat proteins and a lytic domain that lysess the viral membrane, connected by a linker domain, derived from plant sources like grapes, citrus, and tomatoes, to target and eliminate viruses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antiviral treatments are used, then viral infections can be treated, but they lack safety and efficiency for commercially valuable crops
Solution Approach 1:
The antiviral agent is divided into two functional domains: a recognition domain (subtilisin or fragment) that specifically binds to viral coat proteins, and a lytic domain (amphipathic helical peptide) that disrupts viral membranes. This segmentation allows each domain to perform its specialized function, improving both effectiveness and crop safety.
Solution Approach 2:
The invention creates a chimeric peptide by combining two different functional domains (recognition domain and lytic domain) into a single molecule. This composite structure integrates the targeting capability of subtilisin with the membrane-disrupting ability of amphipathic helices, achieving broad-spectrum antiviral activity with improved safety.
2Adaptability or versatility
If broad-spectrum antiviral activity is achieved, then multiple viral infections can be treated, but the complexity of the peptide structure increases
Solution Approach 1:
The chimeric peptide is designed with universal antiviral activity by combining a recognition domain that binds to conserved viral coat protein features with a lytic domain that disrupts viral membranes. This multi-functional design allows a single peptide structure to target multiple different viruses including grapevine viruses, cucumber mosaic virus, and tomato spotted wilt virus.
3Measurement precision
If the recognition domain specifically binds to viral coat proteins, then viral targeting precision is improved, but the peptide may fail to effectively lyse the viral membrane
Solution Approach 1:
The invention merges two essential antiviral functions into a single chimeric peptide: specific viral recognition through the subtilisin domain and membrane lysis through the amphipathic helical peptide domain. This combination ensures that the peptide both precisely targets viral coat proteins and effectively disrupts the viral membrane to eliminate the infection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The chimeric peptides effectively treat or prevent viral infections by enhancing the plant's innate immunity, providing broad-spectrum antiviral activity and reducing viral loads, thereby minimizing yield losses and disease symptoms in crops like grapes, citrus, and tomatoes.
Implementation Method 1
a recognition domain capable of binding to a virus coat protein
Implementation Method 2
lytic domain comprising an amphipathic helical peptide sequence
Data Source
AI summary
The present disclosure relates generally to chimeric peptides composed of at least two domains connected by a linker. More specifically, the peptide domains may include an amphipathic helical domain and a targeting domain, which, in combination, allow the peptides to target and kill various viruses. The disclosed peptides may have a variety of beneficial agricultural properties and uses, for example, in the treatment of viruses that infect grapes, tobacco, tomatoes, citrus, and other commercially important crops.