Genetically Encoded Biosensor Conformational Signal Transduction
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Solution Overview
Problem
Current protein-based sensors are limited by their narrow range of detectable analytes and inability to distinguish signal from noise, restricting their application in real-time visualization of biological events.
Innovation Solution
Genetically encoded recombinant peptides with an analyte-binding framework portion linked to a signaling portion that undergoes a conformational change upon analyte interaction, allowing for macroscopic signal transduction of microscopic binding events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If protein-based sensors are used for real-time visualization of biological events, then microscopic binding events can be transduced into macroscopically observable signals, but the range of detectable analytes remains narrow and signal distinction from noise is poor
Solution Approach 1:
The patent applies universality by designing a modular sensor architecture where a single framework structure can bind multiple different analytes through customizable binding sites. The framework portion serves multiple functions: analyte binding, conformational change transmission, and signaling portion positioning. This modular design allows the same basic sensor platform to detect various analytes including small molecules, peptides, and proteins, thereby expanding the range of detectable analytes while maintaining signal quality through the standardized signaling mechanism.
2Measurement precision
If a signaling portion is inserted within the framework portion at a site undergoing conformational change, then macroscopic signal transduction is achieved, but the structural complexity of the sensor increases
Solution Approach 1:
The patent employs an intermediary approach by introducing a signaling portion as a mediator between the analyte binding event and the detectable signal. The signaling portion acts as an intermediary element that receives conformational changes from the framework portion and converts them into macroscopically observable signals. This intermediary mechanism enhances signal transduction capability while keeping the overall sensor design relatively simple through the use of well-characterized signaling domains with predictable conformational responses.
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
Enables the detection of a wide range of target analytes with enhanced signal distinction, enabling real-time monitoring and analysis of biological events.
Implementation Method 1
the signaling portion is present within the framework portion at a site or amino acid position that undergoes a conformational change (e.g., a conformational change sufficient to alter a physical and/or functional characteristic of the signaling portion) upon interaction of the framework portion with a defined, specific, or selected analyte
Implementation Method 2
the signaling portion is allosterically regulated by the framework portion such that signaling from the signaling portion is altered (e.g. wherein a first level of signaling is altered or changed to a second level of signaling that can be distinguished using routine methods of detection from the first) upon interaction of the framework portion with the analyte
Data Source
AI summary
The present disclosure provides, inter alia, genetically encoded recombinant peptide biosensors comprising analyte-binding framework portions and signaling portions, wherein the signaling portions are present within the framework portions at sites or amino acid positions that undergo a conformational change upon interaction of the framework portion with an analyte.