Custom Protein Expression Services

If you’re involved in biochemical research, drug discovery, structural biology, or other fields requiring specific proteins for your experiments, our custom protein production services offer a reliable solution tailored to your unique requirements. This page will provide you with valuable information about our services and how we can assist you in obtaining high-quality custom proteins for your scientific endeavors

Why Choose IBT for Protein Expression Services?

IBT BioServices is a trusted partner in protein expression and purification services. With our extensive experience in recombinant protein expression and advanced protein purification techniques, we deliver results that meet the most stringent industry standards. Our services are customized to support diverse research applications, from basic science to therapeutic development. By choosing IBT, you gain access to a team of skilled scientists and state-of-the-art facilities dedicated to excellence in protein expression and purification.

Our Process

Our protein expression services follow a structured, rigorous workflow to ensure high-quality results at every step:

 

Consultation and Construct Design: We begin with a comprehensive consultation to understand your specific needs. Our team then designs optimized constructs suitable for various expression systems, including codon optimization and inclusion of tags.

Protein Expression: We specialize in custom protein expression using various systems, such as E. coli, mammalian, and insect cells. Each system is chosen based on the specific requirements of your project to achieve optimal yield and functionality.

Protein Purification: We employ cutting-edge protein purification services, including affinity chromatography, ion exchange chromatography, and size exclusion chromatography. This ensures high purity and functionality for downstream applications.

Quality Control: Rigorous quality control measures, including SDS-PAGE, Western blotting, and mass spectrometry, are performed at every stage. This ensures that the final product meets the highest standards for purity, integrity, and identity.

 

Our structured process guarantees a smooth and efficient experience, making us an ideal choice for all your protein expression and purification needs.

Popular Custom Protein Expression Systems

IBT BioServices offers a range of protein expression systems, each selected based on the specific demands of your project:

 

E. coli Expression: Cost-effective and rapid production for straightforward proteins.

 

Mammalian Expression: Ideal for proteins requiring post-translational modifications, providing high functional activity.

 

Insect Cell Expression: Suitable for complex proteins that require glycosylation, offering high-quality yield.

 

Each system offers distinct advantages, and our team is ready to help you select the best option to meet your project goals.

Standard workflow of recombinant protein production

Example of a solubly expressed recombinant protein in E. coli. Recombinant protein expression can also be performed in mammalian and insect cells.

 

Cell Paste Resuspension 

In the initial step, cell paste resuspension involves rehydrating the collected cell paste to prepare it for further processing. This step is crucial as it ensures that cells are in a manageable state for the following mechanical lysis.

 

Mechanical Lysis (Microfluidizer)

Mechanical lysis uses a microfluidizer to break open the cell walls, releasing intracellular proteins and other contents. This method provides a controlled environment, ensuring efficient cell disruption while preserving the protein’s structural integrity for subsequent purification.

 

Cation Exchange Chromatography (POROS50 HS)  

Following lysis, the solution is passed through cation exchange chromatography using POROS50 HS resin, which binds proteins based on their charge. This step helps separate the desired proteins from other cellular materials, setting up a cleaner sample for the next purification phase.

 

Mixed Modal Chromatography Biorad Ceramic HTP  

In this stage, mixed modal chromatography further purifies the sample by leveraging multiple binding interactions. Using Biorad Ceramic HTP, it selectively retains target proteins, enhancing purity and making the sample ready for final formulation.

 

Concentration/Diafiltration and Final Formulation

After chromatography, concentration and diafiltration processes adjust the protein concentration and remove unwanted salts. This formulation step is essential to stabilize the protein in a suitable buffer for downstream applications.

 

Characterization Assays  

The final step, characterization assays, verifies the protein’s identity, purity, and functionality through analytical techniques. This ensures that the final product meets quality standards, completing the workflow from cell preparation to purified protein.

 

Standard workflow of recombinant protein production

IBT BioServices offers a range of protein expression systems, each selected based on the specific demands of your project:

 

E. coli Expression: Cost-effective and rapid production for straightforward proteins.

 

Mammalian Expression: Ideal for proteins requiring post-translational modifications, providing high functional activity.

 

Insect Cell Expression: Suitable for complex proteins that require glycosylation, offering high-quality yield.

 

Each system offers distinct advantages, and our team is ready to help you select the best option to meet your project goals.

Recombinant protein is purified using two column chromatography steps

First step, cell lysates is loaded onto the cation exchange column and eluted by step elution with high salt. The desired protein is eluted in fraction 2, diluted two-fold and loaded on to a mixed mode column. The protein is eluted by increasing phosphate concentration. The desired protein is eluted in fraction 2.
This assay tests for hemagglutinin (HA)-specific antibodies against influenza virus (INFV). Serial dilutions of the TA starting are incubated with a standardized amount of IFV antigen and Turkey Red Blood Cells (TRBCs) in 96-well plates. In the absence of antibodies against influenza hemagglutinin (HA) glycoprotein, the HA protein agglutinates TRBCs. Hemagglutination is inhibited in the presence of HA-specific antibodies, which will bind to the antigenic sites on the HA protein. The number of antibodies present in a sample is quantified as an HA titer, given as the highest dilution of serum that completely inhibits hemagglutination. IBT’s method is standardized to the WHO testing protocol and can use live virus for testing.

Here are key features and components of our custom protein production:

Optimization of Expression Conditions

Scale-Up Capability

Documentation and Reporting

Confidentiality and IP Protection

Post-Production Support

With years of experience in the field, our team of skilled scientists and technicians are well-versed in conducting protein production. We utilize state-of-the-art equipment and follow stringent quality control measures to ensure precise and reproducible results.

OUR EXPERTISE

Comprehensive Protein Production Services

Customization and Consultation

Services begin with in-depth consultations to understand the client’s specific needs, including the desired protein, its intended application, any modifications required, and the preferred expression system.

Construct Design and Cloning

Expertise in construct design and cloning ensures the creation of optimized expression vectors suitable for the chosen host system, taking into account factors such as codon optimization and inclusion of tags.

Protein Purification Expertise

State-of-the-art purification techniques, such as affinity chromatography, size exclusion chromatography, and ion exchange chromatography, are employed to achieve high purity levels and preserve protein integrity.

Quality Control Measures

Stringent quality control measures are implemented throughout the production process, involving analytical techniques like SDS-PAGE, Western blotting, mass spectrometry, and other methods to verify protein identity, purity, and integrity.

WHY CHOOSE IBT?

EXPERTISE

Our team of scientists and technicians are highly skilled and experienced in conducting HAI assays, ensuring accurate and reliable results.

CUSTOMIZED SOLUTIONS

We understand the unique needs of each research project and provide customized assay designs to meet your specific requirements.

TIMELY RESULTS

We prioritize efficiency without compromising on quality. Our streamlined processes and advanced equipment allow for quick turnaround times, ensuring you receive results promptly.

QUALITY ASSURANCE

We maintain rigorous quality control measures throughout our operations, ensuring the accuracy and reproducibility of our assay results.

EXCEPTIONAL SUPPORT

Our dedicated customer support team is always available to address your queries and provide assistance at every step of the process.

FAq

What quality control measures are included?
We implement stringent quality control measures, including SDS-PAGE, Western blotting, and mass spectrometry, ensuring high purity and functional integrity of the expressed protein.

How much protein yield can I expect?
Yields vary based on the expression system and protein complexity. We work with you to set realistic yield expectations and optimize conditions to maximize protein output.

What is the typical timeline for protein expression projects?
Timelines depend on project complexity and system choice. However, we prioritize efficiency and aim to deliver results promptly while maintaining high quality.

Can you help with construct design?
Yes, our team offers comprehensive support in construct design, including codon optimization and tag inclusion, to ensure successful expression.

Do you offer scale-up for larger production needs?
Absolutely. We offer scale-up capabilities to accommodate larger production needs, providing flexibility for both small-scale studies and large-scale applications.

How should I ship my samples, and do you offer support for international clients?

We provide detailed instructions for sample preparation and shipping, ensuring safe transport. We also support international clients, offering guidance on regulatory and shipping requirements

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