Rapafucin Library Universal Protein Chip Screening
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current chemical libraries are not compatible with human protein chips for screening due to the lack of a universal readout for detecting ligand-protein binding, and artificial tags often interfere with ligand activity.
Innovation Solution
Development of a Rapafucin library of hybrid cyclic molecules based on FK506 and rapamycin binding domains, which includes specific compounds and synthetic methods to produce these molecules for binding to proteins on protein chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If artificial tags are added to detect ligand-protein binding, then binding detection becomes possible, but ligand activity is interfered with
Solution Approach 1:
The invention extracts the detection function from the ligand itself by using a separate reporter system. The ligand binds to the protein target while a fluorescent reporter molecule, positioned away from the binding site, provides detection capability without interfering with the ligand's natural activity and binding properties.
Solution Approach 2:
The invention introduces an intermediary fluorescent reporter system that mediates the detection process. The reporter acts as a separate component that reports binding events through fluorescence changes without directly participating in or interfering with the ligand-protein binding interaction, thus resolving the conflict between detectability and activity.
2Productivity
If existing chemical libraries are used for screening, then screening can be performed, but they are not compatible with human protein chips due to lack of universal readout
Solution Approach 1:
The invention creates a universal screening platform where the fluorescent reporter-ligand conjugates can be used across different protein targets and library compounds. The standardized fluorescence readout system provides universal compatibility with protein chip technology, allowing the same detection methodology to be applied to screen entire chemical libraries against the human proteome.
3Adaptability or versatility
If large libraries of compounds are screened simultaneously, then protein function elucidation is facilitated, but lack of universal readout prevents effective screening
Solution Approach 1:
The invention changes the detection parameter from various target-specific assays to a universal fluorescence-based readout. By converting all binding events into standardized fluorescence signals, the system enables simultaneous screening of large compound libraries against multiple protein targets with consistent and comparable measurements across the entire human proteome.
Data Source
AI summary
A Rapafucin library containing compounds of the general structure, (A) and (E), and a synthesis of these compounds are provided.