Multivalent Puromycin Linker for Higher-Diversity mRNA Display
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Solution Overview
Problem
Existing display methods using puromycin-like substances can only conjugate one translation product to one nucleic acid, limiting the diversity and efficiency of peptide selection.
Innovation Solution
A linker with multiple puromycin-like substances is used to conjugate multiple translation products to a single mRNA, enabling efficient production of genetic information material-linker-peptide conjugates through repeated translation steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a puromycin-like substance is used to conjugate translation products to nucleic acid, then the genotype-phenotype mapping is achieved, but only one translation product can be conjugated to one nucleic acid, limiting the diversity and efficiency of peptide selection
Solution Approach 1:
The puromycin-like substance is divided into multiple functional units, each capable of independently conjugating a translation product to the nucleic acid. This segmentation allows multiple peptides to be attached to a single mRNA molecule, increasing both conjugation capacity and selection efficiency
Solution Approach 2:
The modified puromycin-like substance serves multiple functions simultaneously: it acts as a substrate for peptidyl transfer reaction, a linker for conjugating multiple peptides, and a bridge connecting the phenotype (peptide) to the genotype (nucleic acid). This multi-functionality resolves the contradiction by enabling one molecule to conjugate multiple translation products
2Adaptability or versatility
If multiple translation products are conjugated to a single mRNA, then the diversity of peptide selection is improved, but the complexity of the conjugate structure increases
Solution Approach 1:
The conjugate structure is segmented into modular units where each puromycin-like substance acts as an independent attachment point. This modular segmentation allows multiple peptides to be conjugated in a systematic way, managing structural complexity while maintaining high peptide diversity
Solution Approach 2:
The puromycin-like substance serves as an intermediary molecule that simplifies the complex conjugation process. It mediates between the ribosome (translation machinery) and the nucleic acid, providing a standardized interface for attaching multiple peptides without requiring complex direct conjugation mechanisms
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
This approach allows for multivalent interactions with target substances, enhancing the recovery of peptides with target binding ability and improving the efficiency of display methods.
Implementation Method 1
the puromycin-like substance is bonded to the C-terminus of the Elongating peptide chain as a substrate for a peptidyl transfer reaction on the ribosome
Implementation Method 2
mRNA and a puromycin-like substance are bonded covalently using RNA ligase or non-covalently by hybridization of nucleic acids
Data Source
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AI summary
The present invention relates to a linker and use thereof. The linker of the present invention is a linker including: an attachment part having a structure that can be attached to a desired genetic information material; and at least two or more puromycin-like substances, wherein each of the puromycin-like substances can be covalently bonded to a C-terminus of a desired peptide.