CD Biosynsis provides professional Bacillus subtilis Pathway Optimization Services, utilizing advanced Metabolic Engineering and Synthetic Biology strategies to efficiently engineer the biosynthetic pathways of the Bacillus subtilis chassis. Our goal is to enhance the yield, purity, and production efficiency of target compounds, such as proteins, enzymes, amino acids, and vitamins. Our integrated platform combines high-throughput screening, CRISPR-Cas9 precise editing, and bioinformatics analysis. We cover comprehensive optimization needs, including eliminating byproduct pathways, enhancing rate-limiting steps, and integrating heterologous pathways. We are dedicated to delivering superior Bacillus subtilis strain optimization solutions for industrial fermentation and biomanufacturing.
Get a QuoteBacillus subtilis is one of the most important chassis organisms in biotechnology, often classified as GRAS (Generally Recognized As Safe). Metabolic pathway optimization is crucial for achieving high-yield, low-cost biomanufacturing. By systematically engineering its complex metabolic network, we effectively redirect carbon flux toward the target product, eliminate competitive byproduct pathways detrimental to production, and ensure the stability of heterologous gene expression. Our aim is to provide you with high-performance industrial strains that accelerate your transition from laboratory results to commercial success.
Precursor Supply Reinforcement
Overexpress or activate key rate-limiting enzyme genes in the upstream substrate synthesis pathway to increase the precursor supply for the target metabolite.
Competitive Pathway Elimination
Use CRISPR-Cas9 Gene Knockout technology to precisely inactivate competing metabolic pathways that produce byproducts, diverting carbon flux to the target product.
Rate-Limiting Enzyme Rational Mutation
Through precise base editing or site-directed mutagenesis, eliminate the feedback inhibition of key enzymes in the pathway or enhance their enzymatic activity.
Promoter Library Regulation
Use a gradient strength promoter library to precisely regulate the expression levels of individual enzymes within the pathway, achieving the optimal balance of pathway flux.
Transcriptional Repression (CRISPRi)
Leverage CRISPRi (CRISPR Interference) for reversible gene repression of select target genes, allowing for fine-tuning of gene expression and pathway flux.
RBS (Ribosomal Binding Site) Optimization
Optimize the RBS sequence of genes to finely control protein expression at the translation level, enabling the desired stoichiometric ratio for pathway enzymes.
Heterologous Gene Knock-in
Stably integrate new biosynthetic gene clusters or multi-gene pathways into the Safe Harbor Loci of the Bacillus subtilis genome via Gene Knock-in.
Pathway Element Screening
Construct and screen enzyme element libraries from different species to select the most active components for the Bacillus subtilis chassis.
Adaptive Laboratory Evolution (ALE)
Combine gene editing with ALE to accelerate strain adaptation to new metabolic pathways and high-yield conditions, thereby enhancing final titer.
Our integrated platform ensures high efficiency and reproducibility from theoretical design to strain delivery.
1. Metabolic Analysis & Target Identification
2. Synthetic Biology Design & Construction
3. Strain Screening & Fermentation Validation
4. Delivery & Data Report
Use bioinformatics and metabolomics data to build a model of the target pathway.
Identify bottlenecks (rate-limiting steps), competitive pathways, and key regulatory targets.
Formulate the gene editing strategy for knockout, knock-in, mutation, and regulation.
Design sgRNAs, knock-in fragments, and optimize promoter/RBS sequences.
Employ CRISPR/Cas9 precise editing technology to engineer the Bacillus subtilis genome with multi-locus modifications.
Delivery of the high-performance optimized engineered strain and control strain.
Provision of a detailed Strain Performance Report, gene editing verification, and metabolic product analysis data.
Integrated Metabolic Engineering Platform
Integrates computational biology, gene editing, and high-throughput screening to execute the Design-Build-Test-Learn (DBTL) cycle.
Efficient Multiplex Editing Capability
Capable of precisely editing more than 5 genetic loci simultaneously (knockout, knock-in, mutation) to accelerate the pathway optimization process.
Expertise in Industrial Strain Optimization
Focuses on optimizing fermentation performance and large-scale production, delivering stable strains with commercial potential.
Comprehensive Phenotype Validation
Uses analytical techniques like HPLC and GC-MS for quantitative analysis of target products and byproducts, ensuring optimization efficacy.
"They performed multiple rounds of optimization on our amino acid synthesis pathway. By knocking out key side routes, the final titer increased by over 40%. Their metabolic engineering expertise is truly convincing."
Dr. Li, R&D Director, Fermentation Products Company
"CD Biosynsis helped us stably integrate a complex heterologous synthesis pathway into a safe harbor locus of the Bacillus subtilis genome. The strain performed very stably in high-density fermentation."
Dr. Alan Rivas, Lab Director, Functional Genomics Institute
"Using their promoter library regulation service, we successfully balanced the expression of three rate-limiting enzymes in the pathway, resolving product accumulation issues and significantly improving our protein's expression purity."
Professor Wang, Chief Scientist, Biotechnology Research Institution
"Their technical support team was highly professional in designing a complex multi-gene knock-in strategy. The entire project was completed on schedule, and the strain's performance at industrial scale fully met expectations."
Ms. Sarah Jenkins, VP of Bioprocess Development, BioTech Company
What gene editing technologies are primarily used for pathway optimization?
We primarily use optimized CRISPR-Cas9 for gene knockout, gene knock-in, and point mutations. Additionally, we utilize CRISPRi for the fine-tuning and reversible repression of gene expression.
How do you identify rate-limiting steps in a metabolic pathway?
We combine Metabolic Flux Analysis (MFA), transcriptomics, and metabolomics data to build mathematical models that identify and quantify bottlenecks and competitive pathways.
Can you optimize the production of heterologous (non-native) compounds?
Absolutely. Our services include Heterologous Pathway Construction and Integration, where we stably knock-in foreign gene clusters into Bacillus subtilis genome safe harbor sites, enabling the synthesis of non-native compounds.
How do you ensure the stability of the optimized strain for industrial use?
We ensure stability by integrating optimized pathway components stably into the host chromosome instead of using plasmids. We then evaluate genetic stability through long-term passage experiments and fermenter validation for large-scale production feasibility.
What is the typical timeframe for a pathway optimization project?
The duration depends on the project complexity and target product. A preliminary optimization project involving 3-5 genetic modifications typically takes 3 to 5 months to complete design, construction, screening, and lab-scale verification.
What quality control (QC) is provided with the optimized strain?
QC includes genotype verification (sequencing confirmation of all edited sites), phenotype verification (HPLC/GC-MS quantitative analysis of target product and byproducts), and strain growth curve analysis.
Can you fine-tune Promoters and Ribosomal Binding Sites (RBS)?
Yes, we offer services for promoter strength gradient regulation and RBS optimization to precisely balance the expression ratio of different enzymes in the pathway, which is critical for maximizing metabolic flux.
What types of products are your pathway optimizations primarily focused on?
Our optimization services are applicable to a wide range of bioproducts, including but not limited to recombinant proteins, industrial enzymes, amino acids, organic acids, vitamins, and small molecule secondary metabolites.
CRISPR-Cas9 technology represents a transformative advancement in gene editing techniques. The main function of the system is to precisely cut DNA sequences by combining guide RNA (gRNA) with the Cas9 protein. This technology became a mainstream genome editing tool quickly after its 2012 introduction because of its efficient, simple and low-cost nature.
The CRISPR gene editing system with its Cas9 version stands as a vital instrument for current biological research. CRISPR technology enables gene knockout (KO) through permanent gene expression blockage achieved by sequence disruption. Various scientific domains including disease modeling and drug screening employ this technology to study gene functions. CRISPR KO technology demonstrates high efficiency and precision but requires confirmation and verification post-implementation because unsatisfactory editing may produce off-target effects or incomplete gene knockouts which impact experimental result reliability. For precise and efficient Gene Editing Services - CD Biosynsis, Biosynsis offers comprehensive solutions tailored to your research needs.
The CRISPR-Cas9 knockout cell line was developed using CRISPR/Cas9 gene editing to allow scientists to remove genes accurately for research on gene function and disease models and pharmaceutical discovery. Genetic research considers this technology essential due to its high efficiency together with simple operation and broad usability.
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CD Biosynsis is a leading customer-focused biotechnology company dedicated to providing high-quality products, comprehensive service packages, and tailored solutions to support and facilitate the applications of synthetic biology in a wide range of areas.