Recombinant Ab-Y3 Glycan Binding Proteins for N-Glycan Detection
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Solution Overview
Problem
The knowledge and development of glycan binding proteins (GBPs) have been hindered by the structural diversity and rapid evolution of glycans, as well as limitations in analytical techniques, making it challenging to discover and develop new GBPs for biological research.
Innovation Solution
The expression of recombinant Agaricus bisporus Ab-Y3 protein variants with specific binding capabilities for complex N-glycans, such as bi-, tri-, and tetra-antennary structures, is achieved through engineered expression constructs, allowing for detection, isolation, and purification of proteins with specific glycosylation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional analytical techniques are used to study glycans, then the structural diversity and rapid evolution of glycans can be investigated, but the discovery and development of new GBPs is hindered due to limitations in these techniques
Solution Approach 1:
The patent uses a phage display library as an intermediary system to bridge the gap between conventional analytical techniques and GBP discovery. The phage display technology enables high-throughput screening of GBP variants against glycans, overcoming the limitations of conventional analytical methods while maintaining the ability to study diverse glycan structures.
Solution Approach 2:
The patent employs site-directed mutagenesis to systematically change amino acid parameters in GBP sequences, creating variants with modified glycan binding specificities. This approach allows researchers to overcome the limitations of conventional techniques by engineering GBPs with tailored properties that can detect and bind to diverse glycan structures.
2Measurement precision
If GBPs with high binding specificity for complex N-glycans are developed, then detection and isolation of target proteins with specific glycosylation patterns is improved, but the complexity of engineering and characterizing these proteins increases
Solution Approach 1:
The patent divides the GBP engineering process into manageable segments: (1) creating a phage display library of GBP variants, (2) screening against specific glycan targets, (3) isolating high-affinity binders, and (4) characterizing binding specificity. This segmentation reduces the overall complexity by breaking down the engineering challenge into sequential, optimized steps.
Solution Approach 2:
The patent uses phage display technology to create copies of GBP sequences in a library format, allowing high-throughput screening and selection of variants with desired binding properties. This copying approach enables systematic exploration of sequence-space without requiring de novo design of each variant, reducing engineering complexity.
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
These recombinant Ab-Y3 protein variants effectively bind to complex N-glycans, enabling the detection and isolation of target proteins with high specificity, thereby facilitating research in glycosylation patterns and biological processes.
Implementation Method 1
GBPs read and execute biological information encoded in diverse glycans, being essential to virtually all biological processes
Data Source
AI summary
Aspects of the disclosure relate to compositions and methods for expressing glycan binding proteins (GBPs) in a cell or cells. In some embodiments, the disclosure provides recombinant Ab-Y3 protein variants and isolated nucleic acids engineered to express the same. In some embodiments, the disclosure provides methods of isolating, purifying, detecting, or screening for certain proteins (e.g., IgG proteins) using recombinant Ab-Y3 protein variants.