Trichoderma reesei Mutant Strain for Enhanced Protein Production
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for enhancing protein production in Trichoderma reesei do not fully exploit the potential of novel control factors, limiting the strain's ability to produce proteins efficiently.
Innovation Solution
A mutant strain of Trichoderma reesei is developed with a mutation that eliminates or reduces the function of a specific polypeptide, specifically by introducing a stop codon mutation in the Glycosyltransferase_GTP_type domain, enhancing protein-producing ability and specific activities of cellulases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods for enhancing protein production in Trichoderma reesei are used, then some protein production improvement is achieved, but the full potential of the strain cannot be exploited and protein production efficiency remains limited
Solution Approach 1:
The patent extracts and eliminates a specific repressor polypeptide from the Trichoderma reesei system through targeted mutation. By removing this inhibitory element, the system allows for enhanced protein production without the constraint of the repressor, directly addressing the limitation of conventional methods that fail to fully exploit production potential.
Solution Approach 2:
The patent changes the genetic parameter of the polypeptide encoding gene by introducing mutations including stop codons, deletions, or substitutions. This parameter change eliminates or reduces the function of the repressor polypeptide, thereby transforming the protein production efficiency from a limited state to an enhanced state.
2Productivity
If the function of the polypeptide is eliminated or reduced through mutation, then protein production capacity is significantly improved, but the complexity of strain development increases
Solution Approach 1:
The patent applies targeted genetic modification to extract or eliminate the specific repressor polypeptide function through mutation. This focused approach on a single key element simplifies the overall strategy compared to attempting to modify multiple factors simultaneously, thereby managing complexity while achieving significant productivity improvement.
Solution Approach 2:
The patent employs specific parameter changes in the gene sequence (stop codons, deletions, substitutions) to achieve the desired functional elimination. These defined genetic modifications provide a systematic and controllable method for strain development, managing complexity through precise molecular interventions rather than random mutagenesis.
3Productivity
If a stop codon mutation is introduced in the Glycosyltransferase_GTP_type domain, then the polypeptide function is eliminated and protein production is enhanced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent introduces specific parameter changes at the molecular level, including stop codon mutations, deletions, or substitutions in the polypeptide encoding gene. These precise genetic modifications require high manufacturing precision in terms of DNA manipulation and verification, but they provide exact and predictable outcomes in terms of polypeptide function elimination and protein production enhancement.
Solution Approach 2:
The patent replaces traditional phenotypic screening methods with precise molecular genetic techniques for creating and identifying mutant strains. This substitution of mechanical/phenotypic approaches with molecular/genotypic methods enables higher precision in achieving the desired mutation outcomes and facilitates more accurate control over the protein production enhancement process.
Data Source
AI summary
A mutant strain of Trichoderma reesei has a mutation that eliminates or reduces a function of a polypeptide consisting of the amino acid sequence represented by SEQ ID NO: 2. A method produces a protein, the method including a step of cultivating the mutant strain.