NC2 Domain Collagen IX Trimerization Hexavalent Building Blocks
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Solution Overview
Problem
The existing understanding of the trimerization potential and stagger selection properties of collagen IX is unclear, specifically regarding the domains mediating these properties, which hinders the development of targeted molecular building blocks for hexavalent compositions and therapeutic applications.
Innovation Solution
The NC2 domain of collagen IX is identified as the primary mediator of trimerization and stagger selection, and compositions comprising this domain are developed, allowing for the directed association of heterologous moieties via trimerization initiating and stagger determining capacity, forming hexavalent molecular building blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If previous studies used NC1 sequences or extended NC1 sequences for trimerization, then some multimer formation was achieved, but the trimerization efficiency and heterotrimer specificity were insufficient
Solution Approach 1:
The patent extracts the specific NC2 domain from the full collagen IX structure to identify and utilize its unique trimerization-initiating and stagger-determining properties. By focusing on this isolated domain, the invention achieves reliable heterotrimer formation without requiring the complex full-length collagen structure or extended sequences.
Solution Approach 2:
The invention segments the collagen IX molecule into distinct functional domains, specifically identifying the NC2 domain as the critical segment for trimerization. This segmentation allows the patent to use only the necessary portion (NC2 domain with 1-10 glycine-proline-proline repeats) rather than the entire collagen structure, improving efficiency while reducing complexity.
2Manufacturing precision
If full-length collagen IX or extended sequences were used, then complete structural information was available, but the control over trimerization and stagger selection was insufficient
Solution Approach 1:
The patent applies local quality by concentrating the trimerization and stagger selection functions into the specific NC2 domain region rather than distributing them throughout the full collagen structure. The invention demonstrates that this localized domain (with its specific glycine-proline-proline repeat sequence) provides precise control over heterotrimer formation and stagger selection, achieving manufacturing precision without requiring the full-length protein.
Solution Approach 2:
The NC2 domain performs preliminary action by initiating trimerization and determining stagger orientation before the rest of the collagen structure assembles. This domain acts as a template or guide that pre-establishes the correct configuration, enabling subsequent efficient assembly with high precision control.
3Adaptability or versatility
If heterologous moieties were linked to collagen domains, then hexavalent compositions could be formed, but without identified trimerization domains, specific association was difficult to achieve
Solution Approach 1:
The NC2 domain serves as an intermediary that mediates the association between heterologous moieties and collagen chains. By linking heterologous moieties to the NC2 domain, the invention creates a bridge that enables directed association and specific heterotrimer formation. The NC2 domain's inherent trimerization-initiating properties facilitate this mediated association, making hexavalent composition formation easier and more controllable.
Solution Approach 2:
The NC2 domain exhibits multi-functionality by simultaneously providing trimerization initiation, stagger determination, and serving as a platform for heterologous moiety attachment. This universal domain can mediate multiple functions in the hexavalent composition, enabling both specific association and versatile application potential in a single structural element.
Data Source
AI summary
The present invention relates to the newly identified timerization initiating and stagger determining capacity of the NC2 domain of collagen IX. The invention further relates to a hexavalent molecular building block wherein the linkage of additional moieties to the amino and carboxyl terminals of monomers comprising the NC2 domain of collagen IX promotes the directed association of those moieties via the trimerization initiating and stagger determining capacity of the NC2 domain of collagen IX.