CD Biosynsis offers professional Chlamydomonas reinhardtii Protein Expression and Purification Services, leveraging the unique advantages of this photosynthetic green alga as a "green cell factory." Chlamydomonas reinhardtii provides a eukaryotic environment capable of complex post-translational modifications (PTMs), disulfide bond formation, and correct protein folding, making it an excellent alternative to bacterial or yeast systems. Our platform is particularly suited for the production of therapeutic proteins, industrial enzymes, and vaccine antigens. With expertise in both nuclear and chloroplast expression, we provide a full-spectrum service from codon optimization to high-purity protein delivery.
The use of microalgae for recombinant protein production offers a scalable and cost-effective alternative to traditional mammalian cell cultures. Chlamydomonas reinhardtii is a Generally Recognized as Safe (GRAS) organism that can be grown in simple, inexpensive mineral media using light as the primary energy source. Our services are designed to overcome historical challenges such as gene silencing and low protein accumulation. By utilizing optimized algal vectors, high-efficiency transformation methods, and specialized protease-deficient host strains, we ensure high yields of bioactive proteins. We offer flexible solutions ranging from small-scale pilot studies to large-scale cultivation in photobioreactors, ensuring that your research or industrial needs are met with precision and reliability.
Get a QuoteProtein expression in Chlamydomonas reinhardtii can be targeted to different subcellular compartments, each offering distinct advantages for specific protein types. Nuclear expression allows for the utilization of the secretory pathway, enabling proteins to undergo complex N-glycosylation and be secreted into the culture medium for easier downstream processing. Conversely, the chloroplast genome (plastome) allows for high-level accumulation of proteins in the stroma, where the lack of gene silencing mechanisms results in exceptionally stable expression levels.
Our metabolic engineering team further enhances these platforms by optimizing the algal chassis. We can modify the metabolic flux to support higher translation rates or knock out endogenous proteases that might otherwise degrade your target protein. This integrated approach ensures that the "Green Cell Factory" operates at peak efficiency, delivering high-quality recombinant products that maintain their native biological activity and structural integrity.
PTM Fidelity
Ideal for proteins requiring eukaryotic modifications like glycosylation. We utilize native signal peptides to direct proteins through the ER/Golgi secretory pathway.
Secretion Advantage
Targeted secretion into the culture medium significantly reduces the complexity of purification by separating the target protein from the bulk of intracellular algal proteins.
High Accumulation
The chloroplast stroma provides a unique environment for high-level accumulation of proteins (up to 5 percent of total soluble protein) without silencing.
Operon Expression
Supports poly-cistronic expression, allowing for the simultaneous production of multi-subunit protein complexes or metabolic enzymes from a single transcript.
Tailored Chromatography
Multi-step purification protocols including IEX, SEC, and affinity chromatography (His, Strep, FLAG) optimized for the algal proteome background.
Quality Assurance
Rigorous QC including SDS-PAGE, Western Blot, and Mass Spectrometry to confirm protein identity, purity, and bioactivity.
1. Gene Optimization & Build
2. Algal Transformation
3. Screening & Scale-up
4. Purification & QC
Codon optimization to match the 64 percent GC-bias of Chlamydomonas. Synthesis and cloning into optimized algal expression vectors with appropriate signal peptides and affinity tags.
Transformation of nuclear (electroporation) or chloroplast (biolistic gene gun) genomes. Selection using antibiotic or metabolic markers.
Cell harvesting and lysis followed by multi-step chromatography. Final Quality Control and delivery of purified protein with a comprehensive Certificate of Analysis (CoA).
Human-Like PTMs
The nuclear platform supports essential eukaryotic modifications, including N-glycosylation, vital for the functionality of many therapeutic proteins.
Scalable & Green
Harnesses photosynthesis to drive protein synthesis, offering a sustainable and cost-effective production platform compared to mammalian systems.
Folding Fidelity
The eukaryotic ER and chloroplast stroma provide optimal environments for the folding of complex proteins with multiple disulfide bonds.
Biosafety Assurance
As a non-animal host, Chlamydomonas is free from human viral pathogens and has significantly lower endotoxin risks than bacterial systems.
1. Which platform should I choose: Nuclear or Chloroplast?
Nuclear expression is best for proteins requiring glycosylation or secretion. Chloroplast expression is preferred for high-yield accumulation and proteins that do not require complex glycosylation.
2. How do you address the low yield issues in Chlamydomonas?
We utilize specialized strains deficient in endogenous proteases and use optimized promoters/introns to maximize mRNA stability and translation efficiency.
3. Can you express toxic proteins in algae?
Yes, especially in the chloroplast or through inducible nuclear systems, which allow us to separate the growth phase from the protein production phase.
4. What is the typical turnaround time for purified protein?
A standard project from gene synthesis to purified protein typically takes 16 to 22 weeks, depending on the complexity and scale.
5. Do you offer endotoxin-free protein production?
Yes. As a non-bacterial host, algal systems naturally have significantly lower endotoxin levels compared to E. coli, and we follow stringent purification protocols to ensure low EU levels.
6. Is codon optimization necessary?
Absolutely. Algal genomes have a unique codon bias. We provide proprietary codon optimization to ensure your gene is highly expressed in the Chlamydomonas host.
7. Can you produce multi-subunit proteins?
Yes, we can use either co-transformation of the nucleus or poly-cistronic expression in the chloroplast to produce complex multi-subunit assemblies.
8. What documentation is provided with the final product?
Each project comes with a comprehensive Certificate of Analysis (CoA) detailing purity, concentration, molecular weight verification, and functional assay results.
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.