Dual Expression Vector for Faster Yeast Protein Interaction Testing
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Solution Overview
Problem
The traditional yeast two-hybrid system requires constructing multiple vectors for testing multiple protein interactions, significantly increasing workload and limiting efficiency.
Innovation Solution
A dual expression vector that simultaneously expresses two genes in yeast cells, utilizing a circular DNA molecule with linked multiple cloning sites and promoters for GAL4 activation and binding domains, along with a terminator to control gene expression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple vectors are constructed for testing multiple protein interactions in the traditional yeast two-hybrid system, then the ability to test multiple protein pairs is improved, but the workload and time required for vector construction increases significantly
Solution Approach 1:
The patent combines two separate expression vectors into a single dual expression vector that can simultaneously express both bait and prey proteins. This merging eliminates the need to construct and transfer multiple separate vectors, directly resolving the technical contradiction by maintaining the ability to test multiple protein interactions while dramatically reducing the time and workload for vector construction
Solution Approach 2:
The dual expression vector serves multiple functions within a single plasmid: it contains both the bait gene expression cassette and the prey gene expression cassette, along with necessary selection markers and regulatory elements. This multi-functionality allows a single vector to replace what previously required multiple separate vectors, thereby improving versatility while reducing construction time
2Adaptability or versatility
If multiple vectors are constructed and transferred into two yeast strains respectively, then protein interaction testing capability is improved, but the complexity of the experimental procedure increases
Solution Approach 1:
The patent merges the functionality of two separate vectors into one dual expression vector that can be transferred into a single yeast strain. This combining simplifies the experimental procedure by eliminating the need to maintain and manipulate two separate yeast strains, directly addressing the contradiction between testing capability and procedural complexity
Solution Approach 2:
Within the single dual expression vector, the patent segments the expression cassettes into distinct functional modules: a bait gene expression cassette with its own promoter and multiple cloning site, and a prey gene expression cassette with its own promoter and multiple cloning site. This segmentation allows independent manipulation of bait and prey genes while maintaining overall system simplicity
3Ease of manufacture
If traditional enzyme-ligation and Gateway cloning techniques are used to construct expression vectors, then vector construction is achieved, but the workload for identifying multiple protein interactions increases greatly
Solution Approach 1:
The patent combines two separate vector construction processes into a single dual expression vector construction event. By integrating both bait and prey gene expression cassettes into one plasmid, the ease of manufacture is maintained through standard cloning techniques while productivity is dramatically improved by reducing the number of construction steps from multiple separate vectors to a single unified vector
Data Source
AI summary
A dual expression vector and a method are provided. The dual expression vector has a first multiple cloning site and a second multiple cloning site. The genes of the different proteins could be inserted into the first multiple cloning site and the second multiple cloning site of the dual expression vector for testing the interaction between the different proteins.