Peptide Aptamer FGHIHEGY for Arginine Detection
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Solution Overview
Problem
Current methods for detecting L-arginine are either expensive and require specialized equipment or are cost-effective but unstable and difficult to produce, lacking a low-cost, easy-to-operate, and stable biosensor solution.
Innovation Solution
A peptide aptamer with the sequence FGHIHEGY is developed for specific recognition of L-arginine, which can be modified for improved stability and detection, used in kits or biosensors, and verified through molecular simulation and isothermal titration calorimeter binding verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If large-scale instruments such as liquid chromatography or amino acid analyzer are used for arginine detection, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses a peptide aptamer that mimics the binding function of natural arginine-binding proteins, creating a simplified copy of the recognition mechanism. This allows achieving specific arginine detection without requiring complex large-scale instrumentation, resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The patent replaces complex mechanical/instrumental detection systems with a biochemical recognition system based on peptide-arginine binding. The peptide aptamer provides specific recognition through molecular interaction rather than requiring complex instrumental analysis, thereby reducing device complexity while maintaining detection capability
2Ease of operation
If enzyme-based biosensor is used for arginine detection, then ease of operation is improved, but reliability deteriorates due to low stability and high production cost
Solution Approach 1:
The patent changes the fundamental parameter of the recognition element from enzyme to peptide aptamer. This substitution maintains ease of operation for biosensor application while dramatically improving stability, as peptides are more stable than enzymes under various conditions and do not require complex production processes
Solution Approach 2:
The peptide aptamer can be synthesized through simple and cost-effective methods compared to enzyme production. While the patent does not explicitly emphasize disposability, the simplified synthesis route and enhanced stability make the detection system more reliable and cost-effective for various applications
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 peptide aptamer provides a stable, sensitive, and cost-effective means for rapid L-arginine detection, offering stronger binding capabilities and reduced synthesis costs compared to prior methods, suitable for drug development and biosensor applications.
Implementation Method 1
a peptide aptamer for specific recognition of arginine
Implementation Method 2
a binding verification is carried out on the peptide aptamer library and the arginine by an isothermal titration calorimeter
Data Source
AI summary
A peptide aptamer for specific recognition of arginine and its application are provided. The sequence of the peptide aptamer is shown in SEQ ID No. 1. The peptide aptamer is modified by a group that improves stability, or by a fluorescent group, an isotope and an electrochemical group that provide a detection signal, or by an affinity ligand and a mercapto. According to the computer-aided molecular docking simulation prediction, the peptide aptamer that can specifically bind to L-arginine is screened, which is verified by an isothermal titration calorimeter. The peptide aptamer has the advantages of good stability, strong binding ability, high specificity and low production cost.