Scalable and High-Efficiency Secretion Platform for Complex Proteins. Aspergillus niger is globally recognized as one of the most powerful eukaryotic hosts for protein production, boasting an extraordinary natural capacity to secrete grams-per-liter of proteins into the culture medium. CD Biosynsis provides professional Aspergillus niger Protein Expression and Purification Services, offering a "gene-to-pure-protein" solution. Our platform is specifically designed to handle the challenges of complex eukaryotic proteins, including proper folding, disulfide bond formation, and post-translational modifications to provide high-purity protein products for pharmaceutical, food, and industrial applications.
Get a Technical QuoteOur protein platform spans the entire development cycle, ensuring that every target molecule is matched with the optimal expression strategy and purification workflow. We focus on maximizing extracellular yields while maintaining the highest levels of biological activity.
| Service Tier | Technical Focus | Primary Application | Industrial Value |
|---|---|---|---|
| High-Level Secretion | Signal peptide & Codon optimization | Industrial enzymes & Organic acids | Simplifies downstream recovery |
| Complex Folding | Chaperone & Foldase co-expression | Therapeutic proteins & Antibodies | Ensures biological activity of targets |
| Multi-Step Purification | FPLC (IEX, HIC, SEC) & Tag removal | Research & Diagnostic proteins | Delivers >95% purity; low endotoxin |
| Protease-Reduced Prep | Optimized host strain selection | Bio-pharmaceuticals & Peptides | Prevents target protein degradation |
| Scalable Fermentation | Media & Feed-batch optimization | Pilot-scale commercial trials | Reliable scaling for commercialization |
1. Gene Synthesis
2. Vector & Transformation
3. Fermentation Optimization
4. Downstream Purification
Bioinformatic adaptation of target genes to match Aspergillus niger translational bias and secretory pathway requirements.
Technical project feasibility study and Mutual NDA signing.
Integration of target genes under strong constitutive or inducible fungal promoters followed by high-throughput clone screening.
Verification of sequence accuracy and preliminary secretion assessment.
Tuning of culture parameters including pH, temperature, and specialized ion supplementation to maximize extracellular titers.
Real-time monitoring of growth kinetics and protein accumulation.
Multi-step purification using advanced chromatography (IEX, SEC) and quality control (SDS-PAGE, HPLC, Mass Spec).
Final delivery of purified proteins and comprehensive characterization dossiers.
We benchmark our secretion and purification protocols against landmark research to ensure industrial-grade quality.
A. niger is an excellent host for proteins requiring precise folding. Technical benchmarks have demonstrated the successful secretion of recombinant calcium-binding lysozymes. By optimizing Ca²⁺ concentrations (up to 100 mM), researchers achieved significant secretion increases (150 mg/L). This case highlights the platform's ability to produce biologically active eukaryotic proteins with correctly established structural integrity.
(Reference: Journal of Protein Chemistry)
For the food industry, high-purity enzymes are critical for flavor enhancement. Utilizing A. niger as a cell factory, researchers expressed exogenous lipase genes. Through strategic codon optimization and signal peptide selection, high-level extracellular expression was achieved. Purified enzymes showed superior pH and thermal stability, ideal for large-scale food manufacturing oil decomposition.
(Reference: Journal of Food Science & Technology, 2024)
Modern agriculture requires enzymes that survive harsh pelleting processes. Technical projects focused on the expression of acid phytases in A. niger. Through a multi-step purification process involving ion exchange and gel filtration, enzymes with high specific activity (186.6 U/mg) were obtained. These purified phytases remain active at high temperatures, effectively degrading phytates in livestock feed.
(Reference: Journal of Microbiology and Biotechnology)
Ready to leverage the secretory power of Aspergillus niger for your protein production?
Contact Us1. Can Aspergillus niger handle human or animal protein expression?
Yes. A. niger is particularly suited for animal-derived proteins because it possesses the eukaryotic machinery needed for complex folding and glycosylation that prokaryotic hosts lack.
2. How do you deal with endogenous proteases that might degrade the product?
We utilize specialized protease-deficient host strains and optimized fermentation additives to minimize degradation during the secretion process, ensuring high product integrity.
3. What level of protein purity can you provide?
Depending on your application, we can provide research-grade (80-90%) to pharmaceutical-grade (>98%) purity using our advanced multi-step chromatography workflows.
4. What is the typical lead time for a custom protein project?
A standard project from gene design to purified protein typically takes 12–16 weeks, including strain construction, fermentation optimization, and purification.
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.