Protein on Demand™ Semi-Custom Recombinant Proteins

Protein on Demand™ Semi-Custom Recombinant Proteins

In need of small to mid-scale recombinant proteins produced in your desired expression system?

Cannot afford the custom protein expression services most providers offer?

Aviva Systems Biology offers Protein on Demand, a catalog of semi-custom recombinant proteins.

  • 300,000 protein targets across a wide variety of species.
  • Customize the expression system with up 4 expression systems.
  • Small quantities available: 20 ug - 1 mg.
  • Regardless of your application, Protein on Demand has the unique recombinant protein you need to succeed.

Please note that not all expression systems are available for each protein. Based on protein expression experience, the ideal expression systems are available for selection for each protein.

How to Customize

Once on the Product Page for your target protein, use the protein configuration with drop-down selectors to customize & request your protein.

Step 1: Select your Expression System using the dropdown arrow to view all available expression system options.

Step 3: Select your size, from 20ug to 1mg. The estimated price will be displayed.

Step 4: Place your order online or submit your order details to

Step 5: The Aviva Customer Service team will confirm your order details, validate delivery timelines, and place your order upon approval!

Please note that selection of your expression host does not guarantee product delivery. Every attempt will be made to manufacture your selection as requested. If expression difficulties are encounted, Customer Service will contact you regarding your order and possible alternatives.

Frequently Asked Questions

1. How do I customize a Protein on Demand protein?

Use the configurator that is found on each product page. Use the drop-down arrows to select from available expression systems and sizes.

2. How long does it take to receive my protein?

The minimum production time is 4-6 weeks. However, each expression system is unique and may take longer. Production time in baculovirus can be up to 11-12 weeks. Before placing your order, our customer service team will confirm all details with you, including the estimated delivery time.

3. Can I change the buffer?

Protein on Demand customization and pricing does not include the option for buffer changes. However, we can confirm if a buffer change can be accommodated at an additional cost.

4. I have placed a Protein on Demand order. Can I now cancel it?

Protein on Demand orders are all made to order and cannot be cancelled once protein production has begun. If you do desire to cancel your order, you will be charged a cancellation fee of the full order value. Production begins within 1-2 days of order submission.

5. I cannot find the protein I need produced in the Protein on Demand catalog. Can my protein be custom made?

Yes! We have a very experienced custom protein expression and production team that would love to help you. Fill out our simple Custom Protein Quote Request Form to start the conversation. Note that minimum quantities may need to be met for a full custom.