Yeast Protein Expression

Yeast Protein Expression and Purification Services

Custom yeast expression and purification services for Pichia pastoris and Saccharomyces projects, from construct design to purified protein.

Pichia pastoris and Saccharomyces host platforms
Construct, tag and secretion options scoped per target
Purified protein delivered with analytical QC

Discuss your expression project

From construct to purified protein

Expression route, production scale and purification depth are defined case by case, starting from your target sequence, required protein quantity and downstream application.

Target sequence and construct review
Yeast host and expression format selection
Small-scale expression screening

Pichia pastoris and Saccharomyces

Screening to fermentation scale

Purification and QC release

Our approach

A yeast expression and purification route built around your target

Each project starts with the target, the protein quantity you need and how the material will be used, then moves through construct design, expression screening, scale-up and purification.

Yeast host and construct strategy

We evaluate Pichia pastoris, Saccharomyces cerevisiae and other yeast expression systems against your target class, modification requirements and downstream application, then define vector, tag, leader and secretion options for the project.

Codon-optimized ORF and expression vector build
Tag, leader and secretion format options
Construct-tag panels for challenging targets, scoped per project

Expression, purification and analytical release

Selected constructs move into small-scale screening and then into the scoped production format, followed by chromatography purification and an analytical package agreed with your team before material is released.

Screening of expression level, solubility and format
Affinity capture with polishing chromatography
SDS-PAGE, Western blot and SEC-HPLC as agreed

Host selection driven by the target

Host and expression route are confirmed during project design, based on the target class, its modification requirements and the intended downstream application.

Scales that follow the project

Work begins at small screening volumes and can move to fermentation format when the required protein quantity or the downstream application calls for it, with process parameters recorded for transfer.

Documented outcomes and reporting

Constructs, host configuration, process parameters and analytical results are reported so your team can review what was tested and decide the appropriate next step for the program.

Deliverables

What you receive at project handoff

The handoff package combines the purified material with the documentation needed to review the run and plan follow-up work; specific items are confirmed in the project scope.

Material deliverables

Purified target protein released against the agreed analytical.
Expression construct and host configuration used for the delivered material.
Strain glycerol stocks of the selected expression strain when included.
Tag-cleaved, concentrated or buffer-exchanged aliquots when scoped

Data and documentation deliverables

Project report covering construct, host, process parameters and expression.
Analytical QC records such as SDS-PAGE, Western blot and SEC-HPLC.
Purification summary with chromatography steps and buffer conditions
Construct and primer sequence files supplied on request

Service scope

What can be scoped for your yeast expression project

The parameters below are agreed case by case during project design; final scope, analytics and acceptance criteria are fixed in the project SOW.

Parameter	Typical project scope
Host / expression system	Pichia pastoris, Saccharomyces cerevisiae and other yeast platforms; the host route is selected against target class, modification needs and downstream use.
Construct and tag strategy	Codon-optimized ORF with tag, leader and secretion options; construct-tag panels can be evaluated for challenging targets, with quantity scoped per project.
Expression format	Intracellular, secreted or periplasm-targeted formats; shake-flask screening and controlled fermentation are used as scoped.
Expression scale	Screening volumes from around 1 mL through 48 L fermentation scale, depending on the protein quantity the project requires.
Fermentation parameters	Media, induction strategy, temperature and feed profile are defined per construct and recorded so the process can be reviewed or transferred.
Solubilization and refolding	Solubilization and refolding conditions are evaluated for insoluble targets when scoped, with the approach confirmed during project design.
Purification strategy	Affinity capture with optional tag cleavage, followed by polishing chromatography such as ion exchange or size exclusion when scoped.
Analytical QC	SDS-PAGE, Western blot, SEC-HPLC, intact mass confirmation and endotoxin testing when required; acceptance criteria are set in the SOW.
Deliverable format	Purified protein aliquots, QC records, construct documentation and strain glycerol stocks when included in the agreed project scope.
Project communication	Scientific contact and milestone updates are confirmed with your team during project scoping.

Workflow

How a yeast expression and purification project runs

The engagement follows five stages, from initial scoping through to released purified protein and documentation.

Project scoping and feasibility review

We review the target sequence, intended application, required protein quantity and purity expectations, then agree a project plan with defined acceptance criteria and analytical scope.

Construct and strain design

Expression vector, tag and secretion strategy and yeast host are defined for the target; challenging targets can start from a construct-tag panel rather than a single build.

Small-scale expression screening

Parallel small-volume cultures are compared for expression level, solubility and format, and the best-performing construct and host combination is carried forward into scale-up.

Scale-up expression and harvest

The selected configuration is produced at the scoped scale with controlled media, induction, temperature and feed parameters, followed by cell harvest and clarification of the lysate or supernatant.

Purification and QC release

Capture and polishing chromatography are run as scoped, tag cleavage is performed when required, and purity, identity and integrity are assessed within the agreed analytical package.

Applications

Where yeast-expressed protein is typically used

Yeast expression suits programs that need a defined, reproducible protein source; the examples below are common starting points and are scoped against your own requirements.

Antigens, binding proteins and assay reagents

Yeast expression is commonly used to supply recombinant antigens, binding proteins and assay reagents where a defined protein source is needed for downstream testing and internal method work.

Recombinant antigen and reference protein supply
Reagent batches from a documented expression configuration
QC records suitable for internal method documentation

Proteins for structural and biophysical work

Purified material can be prepared for crystallography, cryo-EM or biophysical assays, with tag cleavage, buffer exchange and concentration handled as part of the purification scope.

Tag-cleaved and buffer-exchanged material when scoped
Concentration and aliquot formats agreed in advance
SEC-HPLC and mass confirmation supporting identity checks

Enzymes and industrial protein candidates

Yeast platforms are widely used for enzyme and industrial protein candidates, and projects can be structured to compare constructs before committing to a larger production format.

Construct comparison before larger-scale production
Secreted or intracellular formats evaluated side by side
Process parameters recorded to support later transfer

FAQ

Questions buyers ask before starting

These are the points most often raised during scoping for yeast expression and purification projects.

Host selection is based on the target's sequence and complexity, its modification requirements, the downstream application and the protein quantity you need. Pichia pastoris, Saccharomyces cerevisiae and other yeast platforms can be evaluated, and small-scale comparisons are run when the right route is not obvious from the outset.
That is a normal development finding rather than a stopping point. Depending on the project we can test additional constructs and tag combinations, change host or expression format, adjust induction and temperature, and apply detergent screening or refolding as scoped. Outcomes remain target-dependent and are reported as observed.
Work starts at small screening volumes and can scale to fermentation format, with roughly 1 mL to 48 L as the range typically discussed. The batch size for your project is set by how much protein you need, how it will be used and how much material the purification step is expected to recover, and it is fixed in the SOW.
The analytical package is agreed before release and commonly includes SDS-PAGE with purity assessment, Western blot confirmation when a suitable antibody exists, SEC-HPLC, and intact mass confirmation. Endotoxin testing and additional assays are added when your application requires them, with acceptance criteria defined in the SOW.
Difficult targets are accepted case by case. Construct-tag panels, alternative yeast hosts, secreted or intracellular formats, and detergent screening during or after expression can be incorporated to identify solubilization conditions. Feasibility and the achievable format are discussed during scoping rather than assumed upfront.

Scientific Literature

References

Ma M, Goyal S, Burd CG, et al. Expression, Purification, and Liposome Binding of Budding Yeast SNX-BAR Heterodimers. Journal of visualized experiments: JoVE. 2019 Dec 6. View on PubMed
Weston S, Frieman M. Using Yeast to Identify Coronavirus-Host Protein Interactions. Methods in molecular biology (Clifton, N.J.). 2020;2203:205-221. View on PubMed
Siddiquee R, Choi SS, Lam SS, et al. Cell-free expression of natively folded hydrophobins. Protein expression and purification. 2020;170:105591. View on PubMed

Ready to Start Your Project?

Get a customized quote for your Yeast Protein Expression and Purification Services project. Our experts will respond within 24 hours.

No obligation

24h response

Expert consultation

Yeast Protein Expression and Purification Services

From construct to purified protein

A yeast expression and purification route built around your target

Yeast host and construct strategy

Expression, purification and analytical release

Host selection driven by the target

Scales that follow the project

Documented outcomes and reporting

What you receive at project handoff

Material deliverables

Data and documentation deliverables

What can be scoped for your yeast expression project

How a yeast expression and purification project runs

Project scoping and feasibility review

Construct and strain design

Small-scale expression screening

Scale-up expression and harvest

Purification and QC release

Where yeast-expressed protein is typically used

Antigens, binding proteins and assay reagents

Proteins for structural and biophysical work

Enzymes and industrial protein candidates

Questions buyers ask before starting

References

Ready to Start Your Project?

Recommended Services

Related Resources