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Trusted by Leading Research & Pharma Institutions

Custom Saccharomyces cerevisiae Protein Expression

The gold-standard eukaryotic expression system trusted for decades in research and industry. Our optimized S. cerevisiae platform delivers properly folded, glycosylated proteins with the GRAS safety profile essential for food and pharmaceutical applications.

GRAS Status
Proper Folding
Scalable
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Trusted by leading research and pharmaceutical institutions

MIT
Pfizer
Stanford
Roche
Johns Hopkins
Merck

Why Choose Us

GRAS-certified production strain
Complete N-glycosylation machinery
Advanced GAL expression system
Scalable from lab to industrial

Safe Production

GRAS status for food-grade proteins

Proper Glycosylation

Complete eukaryotic PTM capabilities

GAL Induction

Tight transcriptional control

Industry
70+ Years
Overview Technology Specifications Workflow Applications FAQ
Service Overview

The Gold Standard Eukaryotic System

Saccharomyces cerevisiae has been the workhorse of eukaryotic recombinant protein production for over 70 years, offering proven reliability, safety, and sophisticated post-translational modification capabilities.

GRAS Safety Status

Saccharomyces cerevisiae has Generally Recognized As Safe (GRAS) status from the FDA, making it the ideal host for producing proteins for food, pharmaceutical, and cosmetic applications. No pathogenic toxins or viral contaminants.

  • FDA GRAS certification available
  • No endotoxins or viral contamination
  • Established industrial scale-up protocols

Complete Post-Translational Modifications

Yeast provides the full complement of eukaryotic protein processing machinery including disulfide bond formation, protein glycosylation, phosphorylation, lipidation, and proper protein folding in the ER and Golgi.

  • N-linked and O-linked glycosylation
  • Disulfide bond formation
  • Protein sorting and secretion

GAL Induction System

The galactose-inducible GAL1/10/7 promoter system provides tight transcriptional control and high expression levels when induced with galactose.

Scalable Platform

Seamlessly scale from milligram research batches to industrial-scale fermentation using well-established protocols and equipment.

Advanced Genetics

Well-characterized genome, efficient homologous recombination, and powerful CRISPR tools enable precise metabolic engineering.

Ready to Start Your Project?

Get a customized expression strategy and quote for your S. cerevisiae project.

Technology Platform

Advanced Expression Technologies

Our integrated platform combines state-of-the-art molecular tools with proven fermentation protocols for maximum protein production.

GAL Promoter System

The galactose-inducible GAL1 promoter provides tight regulation with exceptional expression levels. Synthetic GAL promoters offer even greater dynamic range and carbon source flexibility.

Tight Regulation High Induction

CRISPR-Cas9 Engineering

Advanced CRISPR-Cas9 genome editing enables precise gene knockout, knock-in, and multiplexed metabolic engineering for optimized production strains with superior yields.

High Efficiency Multiplexed

Glycoengineering

Engineered glycosylation pathways produce more human-compatible glycan structures. Strains can be tailored for high-mannose, complex, or humanized glycosylation profiles.

Humanized Customizable

Quality Control

SEC Size exclusion chromatography purity
MS Mass spectrometry verification
Glycan Glycosylation profile analysis
Activity Functional activity assays

Expression Formats

Intracellular Cytoplasmic expression
Secreted Alpha-factor secretion signal
Surface Cell surface display
Periplasmic Oxidizing environment for disulfide bonds
Specifications

Comprehensive Expression Services

From gene synthesis to purified protein, we offer tailored solutions for every stage of your project.

Parameter Standard Service Premium Service Industrial Scale
Expression Level 100-500 mg/L 500 mg - 2 g/L Up to 5+ g/L
Scale Options 10 mg to 500 mg 500 mg to 10 g 10 g to kg
Turnaround Time 4-8 weeks 8-12 weeks 3-6 months
Purity Level >80% (His-tag) >95% (AKTA pure) >98% (industrial grade)
Glycosylation High-mannose (native) Engineered profiles Custom glycan engineering
Host Strain BY4741, INVSc1 Glyco-engineered strains Industrial strains
Workflow

Proven Expression Pipeline

Our systematic approach ensures quality and efficiency at every stage of your project.

1

Gene Design

Sequence optimization and codon analysis

2

Vector Construction

GAL expression cassette cloning

3

Strain Development

Transformation and clone screening

4

Fermentation

GAL induction and cultivation

5

QC & Delivery

Purification and quality verification

Applications

Diverse Applications Across Industries

Our S. cerevisiae expression platform supports applications from research to industrial bioprocessing.

Biopharmaceutical Production

S. cerevisiae has a long history in pharmaceutical protein production, including vaccines, growth factors, and virus-like particles. The GRAS status and complete eukaryotic PTM machinery make it ideal for complex therapeutic proteins.

  • Vaccine antigens and VLPs
  • Recombinant hormones and growth factors
  • Antibody fragments and fusion proteins
  • Glycoengineered therapeutic proteins
GRAS
FDA-Approved Safety Status

Industrial Enzyme Production

Yeast-based enzyme production has revolutionized industrial bioprocessing. S. cerevisiae produces high-activity enzymes for applications in biofuels, textiles, pulp and paper, and specialty chemicals.

  • Cellulases for bioethanol production
  • Lipases for biodiesel and specialty chemicals
  • Invertases for food industry
  • Oxidoreductases for biosynthesis
5+ g/L
Industrial Scale Expression

Food and Beverage Applications

The GRAS status makes S. cerevisiae the preferred host for food-grade protein production. Enzymes produced include those for baking, brewing, dairy alternatives, and nutritional supplements.

  • Baking enzymes (invertase, glucoamylase)
  • Brewing and winemaking enzymes
  • Dairy enzyme alternatives (rennet)
  • Nutritional protein supplements
Food-Grade
GRAS-Certified Production
Testimonials

What Our Clients Say

Trusted by researchers worldwide for quality and reliability.

"The GAL induction system provided the tight control we needed for our toxic protein expression project. Expression levels were excellent once we optimized the induction conditions. The technical team was very responsive."

M
Senior Scientist
Pharmaceutical Company

"We needed a GRAS-status host for our food enzyme product and S. cerevisiae was perfect. The scale-up from lab to industrial production was seamless. Consistent quality across all batches."

R
Technical Director
Food Biotechnology Company

"The glycoengineering capabilities allowed us to produce proteins with the exact glycosylation profile required for our therapeutic application. The humanized glycan strains exceeded our expectations."

J
Principal Investigator
Academic Research Institution
Scientific Literature

Scientific Foundation

Our platform is backed by peer-reviewed research.

30+ Citations

Engineering Strategies for Enhanced Heterologous Protein Production by Saccharomyces cerevisiae

Zhao M, Ma J, Zhang L, Qi H. Microbial Cell Factories. 2024.

Comprehensive review of engineering strategies for enhancing heterologous protein production in S. cerevisiae, covering expression system construction, protein secretion engineering, glycosylation pathway engineering, and systems metabolic engineering.

View DOI
13 Citations

Engineering Saccharomyces cerevisiae for Efficient Production of Recombinant Proteins

Yang S, Song L, Wang J, Zhao J, Tang H, Bao X. Engineering Microbiology. 2023.

Comprehensive overview of recent advances in engineering S. cerevisiae for improved recombinant protein production, focusing on promoter engineering, codon optimization, and secretory pathway modifications.

View DOI
30+ Citations

Challenges and Progress Towards Industrial Recombinant Protein Production in Yeasts

De Brabander P, Uitterhaegen E, Delmulle T, De Winter K, Soetaert W. Biotechnology Advances. 2023.

Review of current status and performance of major yeast species including S. cerevisiae in commercial recombinant protein production, including critical process parameters for large-scale bioreactors.

View DOI
New Publication

From Natural to Synthetic: Promoter Engineering in Yeast Expression Systems

Nguyen L, Schmelzer B, Wilkinson S, Mattanovich D. Biotechnology Advances. 2024.

Systematic review of endogenous promoter identification and synthetic promoter construction methods in yeast expression systems, providing insights into developing customized promoters for different applications.

View DOI
30+ Citations

A Synthetic Promoter System for Well-Controlled Protein Expression with Different Carbon Sources in Saccharomyces cerevisiae

Deng J, Wu Y, Zheng Z, Chen N, Luo X, Tang H, Keasling JD. Microbial Cell Factories. 2021.

Construction of a GAL synthetic promoter library revealing that upstream activating sequences and core promoter synergy determine performance across different carbon sources.

View DOI
FAQ

Frequently Asked Questions

Find answers to common questions about our service.

S. cerevisiae offers several unique advantages: GRAS safety status for food and pharmaceutical applications, complete eukaryotic post-translational modifications including glycosylation, well-characterized genome with advanced genetic tools, decades of industrial experience and established protocols, and cost-effective production on defined media.
The GAL system uses galactose as an inducer to activate transcription from GAL promoters (GAL1, GAL10, GAL7). In the absence of galactose (using glucose or raffinose as carbon source), the promoter is tightly repressed. Adding galactose triggers a cascade that activates expression, allowing precise temporal control of protein production.
Wild-type S. cerevisiae produces high-mannose N-glycans (8-50 mannose residues) which are more immunogenic than mammalian glycans. However, we offer glycoengineered strains that can produce humanized glycosylation patterns with reduced mannose content or even complex mammalian-like glycans suitable for therapeutic applications.
Standard expression projects typically take 4-8 weeks from gene receipt to purified protein. This includes gene synthesis/cloning, expression vector construction, strain transformation and screening, small-scale expression testing, fermentation and purification. Premium services with extensive optimization may take 8-12 weeks.
Expression levels vary depending on the protein and conditions. Shake flask expressions typically yield 10-100 mg/L of secreted protein. In optimized fed-batch fermentations, volumetric productivities of 500 mg to 5+ g/L can be achieved. Some highly expressed proteins have reached even higher levels in industrial settings.
Secretory expression is generally preferred when possible, as it simplifies purification and provides proper disulfide bond formation in the ER. However, for intracellular proteins, toxic proteins, or proteins that do not secrete well, intracellular expression may be necessary. Our team can help determine the optimal strategy based on your protein characteristics.

Ready to Start Your Project?

Get a customized quote for your Custom Saccharomyces cerevisiae Protein Expression Service project. Our experts will respond within 24 hours.

No obligation
24h response
Expert consultation

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· Step-by-Step Guide to Generating CRISPR Knockout Cell Lines for Research
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