Protease Solutions
Protease Solutions for Protein Cleavage & Processing
High-purity, highly specific proteases and tailored cleavage workflows for tag removal, API release, and controlled protein processing.
What Protease Cleavage Delivers
Proteases hydrolyze the peptide bonds between amino acids in a target protein, either at defined recognition sequences or more broadly across the substrate. That controlled hydrolysis is what turns a fusion construct into a released product: excising an affinity tag after purification, liberating an active pharmaceutical ingredient from its fusion partner, or converting a precursor protein into its mature form.
Because the reaction outcome depends on enzyme specificity, buffer conditions, temperature, and the enzyme-to-substrate ratio, protease-based processing is a design problem as much as a reagent problem. Our service pairs the right protease with a cleavage protocol built around your substrate, then verifies the result analytically so downstream steps start from a defined material.
Tag Excision and API Release
Highly specific proteases are commonly used to remove affinity tags from fusion proteins and to release active pharmaceutical ingredients from fusion partners in therapeutic workflows.
- Cleavage at defined recognition sequences
- Fusion partner removal after capture
- Precursor-to-mature protein processing
General Protein Removal
Where the goal is hydrolysis rather than a defined cut, potent proteases support complete protein degradation and removal applications.
- Broad-spectrum hydrolysis
- Protein removal from process streams
- Complementary protease inhibitor options
High-Purity and quality-controlled Supply
Recombinant proteases expressed in microbial systems avoid animal-derived material and endotoxin risk, supporting regulated production environments.
- Animal-component-free recombinant enzymes
- High-purity grades for regulated workflows
- Lot-to-lot consistency to reduce validation effort
Protease Selection by Application
Different processing goals call for different enzyme classes. Endoproteases such as trypsin cleave internally at defined residues, exoproteases such as carboxypeptidase B trim terminal residues, and engineered viral proteases are widely used for affinity-tag cleavage because they cut at a specific sequence.
The table below maps common application areas to the protease classes typically used and the processing goal each one serves. Final enzyme choice is confirmed against your substrate sequence and downstream requirements.
| Application | Typical Protease Class | Processing Goal | Notes |
|---|---|---|---|
| Affinity-tag removal | Engineered viral proteases (e.g., 3C protease) | Excise tag from purified fusion protein | Optimized constructs support high-yield expression and fast cleavage |
| API release from fusion partner | Highly specific endoproteases | Liberate active ingredient, e.g., insulin processing | High-purity grades for therapeutic workflows |
| Terminal residue trimming | Exoproteases (e.g., carboxypeptidase B) | Remove C-terminal basic residues | Used in sensitive biopharma manufacturing steps |
| Total protein degradation | Broad-spectrum proteases | Complete hydrolysis and protein removal | Paired with protease inhibitors where degradation must be stopped |
How an Engagement Works
Each project follows a defined path from substrate review to verified cleavage, with the parameters that control the reaction set and documented before processing begins.
Substrate and Specificity Review
We review your target protein sequence, fusion architecture, and downstream requirements to identify candidate cleavage sites and select a protease with the appropriate specificity.
Enzyme-to-Substrate Ratio and Condition Setting
Enzyme-to-substrate ratio, buffer composition, and temperature are defined for your substrate, since these parameters govern cleavage efficiency and the extent of unwanted secondary cuts.
Cleavage Reaction and Monitoring
The cleavage reaction is run under the agreed conditions, with progress monitored so that the reaction can be assessed against the intended product profile.
Protease Removal or Inactivation
After cleavage, the protease is removed or inactivated according to the chosen route, so the released product is not exposed to continued proteolytic activity.
Customization Options
Cleavage performance is substrate-specific, so the protocol is built around your molecule rather than applied as a fixed recipe. The options below describe what can be adjusted during scoping.
Protease and Specificity
Selection is driven by the recognition sequence present in your construct and by how much selectivity the downstream product requires.
- Endoprotease, exoprotease, or engineered viral protease
- Sequence-specific versus broad hydrolysis
- High-purity or quality-controlled options as scoped
Ratio, Buffer, and Temperature
Enzyme-to-substrate ratio, buffer conditions, and temperature are tuned together, because each influences both cleavage efficiency and side reactions.
- Ratio optimization against your substrate
- Buffer and pH conditions matched to the enzyme
- Temperature set for the required reaction profile
Removal, Inactivation, and QC
How the protease is stopped and how completeness is demonstrated are agreed up front, so the released product meets the specification you need.
- Protease removal or inactivation route
- SDS-PAGE, HPLC, or MS verification
- Documentation of cleavage results
Service Scope
Scope is defined case by case after consultation, based on your substrate, the required cleavage outcome, and the analytical evidence your project needs. The table describes the parameters that can be customized.
| Parameter | Typical Project Scope | Customization Basis | Support |
|---|---|---|---|
| Protease selection | Endoprotease, exoprotease, or engineered viral protease matched to your cleavage site | Substrate sequence and required specificity | A named scientific contact is assigned at project start, milestone review calls are scheduled, and email inquiries receive a response within 1 business day. |
| Enzyme-to-substrate ratio | Optimized for your substrate and target cleavage extent | Substrate concentration and reaction goal | A named scientific contact is assigned at project start, milestone review calls are scheduled, and email inquiries receive a response within 1 business day. |
| Buffer and temperature | Conditions defined for the selected enzyme and substrate | Enzyme compatibility and product stability | A named scientific contact is assigned at project start, milestone review calls are scheduled, and email inquiries receive a response within 1 business day. |
| Protease grade | High-purity or quality-controlled options as scoped | Regulatory and downstream requirements | A named scientific contact is assigned at project start, milestone review calls are scheduled, and email inquiries receive a response within 1 business day. |
| Protease removal or inactivation | Removal or inactivation route selected per project | Downstream process and product sensitivity | A named scientific contact is assigned at project start, milestone review calls are scheduled, and email inquiries receive a response within 1 business day. |
| Cleavage QC | Completeness verification by SDS-PAGE with orthogonal HPLC or MS confirmation as scoped | Analytical evidence required for release | A named scientific contact is assigned at project start, milestone review calls are scheduled, and email inquiries receive a response within 1 business day. |
Why Projects Choose This Approach
Protease-based processing succeeds or fails on the details: the specificity of the enzyme, the ratio at which it is applied, and the conditions under which it acts. Our approach keeps those details explicit and verifiable.
Cleavage Site Confidence
Enzyme choice is anchored to the recognition sequence in your construct, so cleavage is directed to the intended position rather than left to chance.
- Sequence-informed protease selection
- Defined recognition sites
- Reduced risk of unintended cuts
Consistent Enzyme Quality
Recombinant proteases produced under controlled conditions offer high lot-to-lot consistency, which supports reproducible processing and reduces validation effort.
- Animal-component-free recombinant enzymes
- Narrow lot activity specifications
- Consistent performance across batches
Documented Cleavage Completeness
Results are supported by analytical verification rather than assumption, giving you a defined starting point for the next process step.
- SDS-PAGE assessment of cleavage
- Orthogonal HPLC or MS confirmation
- Results documented for your records
Applications and Processing Goals
Protease cleavage supports a range of processing goals across recombinant protein and biopharmaceutical workflows. The table below outlines common application areas and what the processing step is intended to achieve.
| Application Area | Processing Goal | Typical Consideration | Verification |
|---|---|---|---|
| Recombinant protein purification | Remove affinity tag after capture | Tag accessibility and cleavage site placement | SDS-PAGE with orthogonal confirmation |
| Therapeutic protein manufacturing | Release active ingredient from fusion partner | Enzyme grade and process compatibility | Analytical verification as scoped |
| Precursor processing | Convert precursor to mature protein form | Specificity for the intended maturation site | Product profile assessment |
| Protein removal | Complete hydrolysis of unwanted protein | Reaction extent and stopping conditions | Residual protein assessment as scoped |
Analytical Verification
Cleavage completeness is the key release question in protease processing: has the substrate been converted to the intended product, and is residual protease activity controlled? Verification is therefore built into the workflow rather than added at the end.
Depending on the project, completeness is assessed by SDS-PAGE to visualize substrate and product bands, with orthogonal confirmation by HPLC or mass spectrometry where the product profile requires it. The analytical package is agreed during scoping so it matches the evidence your downstream process needs.
Getting Started
To scope a protease cleavage project, we typically need the target protein sequence or construct map, the intended cleavage outcome, and any downstream constraints such as required enzyme grade or analytical evidence.
From there, we confirm the protease class, propose reaction conditions, and outline the verification approach. Scope, analytical depth, and enzyme grade are defined in the project agreement rather than selected from a fixed package.
FAQ
How do you decide which protease to use for my construct?
Selection starts from the recognition sequence present in your target protein and from the specificity your downstream product requires. Endoproteases, exoproteases, and engineered viral proteases each cut differently, so the construct sequence and the intended cleavage position drive the recommendation, which is then confirmed during scoping.
What enzyme-to-substrate ratio will be used?
The ratio is optimized for your specific substrate rather than fixed in advance. Because the ratio influences both cleavage efficiency and the extent of unwanted secondary cuts, it is set alongside buffer and temperature conditions and reviewed against the observed cleavage profile for your project.
How is cleavage completeness verified?
Completeness is assessed analytically, typically by SDS-PAGE to visualize substrate and product bands, with orthogonal confirmation by HPLC or mass spectrometry where the product profile requires it. The specific methods and acceptance criteria are agreed during scoping so they match your downstream requirements.
How is the protease removed or inactivated after cleavage?
The removal or inactivation route is selected per project based on your downstream process and product sensitivity. The goal is to ensure the released product is not exposed to continued proteolytic activity, and the chosen approach is documented as part of the project record.
Do you offer quality-controlled or high-purity protease options?
High-purity and quality-controlled options can be scoped where the downstream application requires them. Recombinant proteases expressed in microbial systems avoid animal-derived material and endotoxin risk, and consistent lot specifications support reproducible processing in regulated environments.
References
- Gudipati RK, Braun K, Gypas F, et al. Protease-mediated processing of Argonaute proteins controls small RNA association. Molecular cell. 2021;81(11):2388-2402.e8. View on PubMed
Scope Your Protease Cleavage Project
Share your construct sequence, intended cleavage outcome, and downstream requirements, and we will propose a protease class, reaction conditions, and verification approach for your substrate.