About DENARASE®
How DENARASE® works
DENARASE® specifically hydrolyzes the phosphodiester bonds between nucleotides leaving smaller fragments of around 3-5 base pairs. The enzyme is active on all forms of nucleic acids including single-stranded, double-stranded, linear, circular or supercoiled. Best results are obtained when the enzyme is added before the release of DNA.
Production of DENARASE®
DENARASE® has been developed for use in commercial manufacturing processes of biologicals and complies with EU GMP regulations. The patented production process uses a gram-positive Bacillus sp. production host, which minimizes the risks of endotoxins in the product. No antibiotics, Triton X-100, materials with TSE/BSE risk or raw materials of animal origin are employed in the manufacture of the product.


DENARASE® is available in two quality grades:
DENARASE® for Research and Development (R&D) use &
DENARASE® for manufacturing under GMP.
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DENARASE® R&D-grade is produced in conformity with the ISO 9001 standard, with less strict requirements regarding documentation, storage and distribution
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DENARASE® GMP-grade is manufactured under EU GMP conditions
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From a technical performance perspective, both quality grades are equal and the parameters on the specification are the same. This allows for a seamless transition from early R&D stage towards biopharmaceutical manufacturing under GMP.
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In order to avoid mix-ups, packaging units of the same size are indicated differently in the product name of the two quality standards: 1000/5000 kU for R&D-grade DENARASE® and 1/5 MU for GMP-grade DENARASE®.
Order your DENARASE® toolkit now!
Step 1 | Which product?
Products for use in research and development & GMP
For process development and GMP manufacturing of biologicals such as viral vectors and vaccines. Removing all forms of DNA and RNA, DENARASE® enhables a simpler, more efficient downstream process.
- DENARASE® GMP-grade is manufactured under EU GMP conditions
- DENARASE® R&D-grade is produced in conformity with the ISO 9001 standard, with less strict requirements regarding documentation, storage and distribution
- From a technical performance perspective, both quality grades are equal and the parameters on the specification are the same. This allows for a seamless transition from early R&D stage towards biopharmaceutical manufacturing under GMP.
Products for use in research and development & GMP
DENARASE® High Salt is designed to retain activity at elevated salt and different pH levels. It is specifically engineered for use in development and manufacturing processes, that benefit from salt additions. The salt-tolerant enzyme efficiently cleaves all forms of DNA and RNA across a broad range of process-relevant conditions, facilitating flexible and more efficient production of biologicals, such as viral vectors and vaccines.
- DENARASE® High Salt GMP-grade manufacturing complies with EU GMP standards
- DENARASE® High Salt R&D-grade is produced under ISO 9001 standard
- Both quality grades of DENARASE® High Salt are technically equivalent, enabling a seamless transition from early R&D stages to biopharmaceutical manufacturing under GMP
ELISA Kit for detection of DENARASE®, DENARASE® High Salt and Benzonase*
For the quantitative analysis of residual Serratia marcescens endonucleases including DENARASE® High Salt in process samples.
- The kit consists of a pre-coated micro test plate and all ready to use reagents
- The capacity of 1 kit is 480 measurements
- Estimated Delivery time: 1-2 weeks (depending on region)
- Net price excluding VAT and shipment costs
*Benzonase Nuclease is a registered trademark of Merck KGaA
Step 2 | Which quality grade?
For process development of biologicals such as viral vectors and vaccines. The enzyme cleaves all forms of DNA and RNA and enables a simpler, more efficient downstream process.
Purity: ≥ 99%
Activity: > 250 U/µl
Formulation: buffered aqueous glycerol solution
Storage Temperature: -20°C
Estimated Delivery time: 1-2 weeks (depending on region)
- Produced in conformity with ISO 9001 standard
- Manufacturing free of animal-derived raw materials and antibiotics
- Depending on your application 10-100 U/ml is needed
- Net price excluding VAT and shipment costs
Activity: > 250 U/µl
Formulation: buffered aqueous glycerol solution
Storage Temperature: -20°C
Estimated Delivery time: 1-2 weeks (depending on region)
- Produced under EU GMP conditions
- Manufacturing free of animal-derived raw materials and antibiotics
- Dedicated regulatory support for US-market approvals of pharmaceutical products via own US FDA Drug Master File
- Net price excluding VAT and shipment costs
Step 2 | Which quality grade?
Intended for use in process development of biologicals such as viral vectors and vaccines. The salt-tolerant enzyme cleaves all forms of DNA and RNA and enables a simpler, more efficient downstream process at salt concentrations above 150 mM.
Purity: ≥ 98%Activity: > 250 U/µl
Formulation: buffered aqueous glycerol solution
Storage Temperature: -20°C
Estimated Delivery time: 1-2 weeks (depending on region)
- Produced under ISO 9001 standard
- Manufactured without the use of antibiotics, Triton X-100 and raw materials of animal origin
- Depending on your application 10-100 U/ml enzyme is needed
- Net price excluding VAT and shipment costs
Intended for use in GMP manufacturing of biologicals such as viral vectors and vaccines. The salt-tolerant enzyme cleaves all forms of DNA and RNA and enables a simpler, more efficient downstream process at salt concentrations above 150 mM.
Purity: ≥ 98%Activity: > 250 U/µl
Formulation: buffered aqueous glycerol solution
Storage Temperature: -20°C
Estimated Delivery time: 1-2 weeks (depending on region)
- Manufacturing of the GMP-grade DENARASE® High Salt complies with the same stringent regulations and standards as the wild-type GMP-grade DENARASE® products.
- Produced under GMP conditions complying with EU GMP regulations
- Manufactured without the use of antibiotics, Triton X-100 and raw materials of animal origin
- Net price excluding VAT and shipment costs
Step 4 | Request price
Step 4 | Request price
Step 4 | Request price
Step 4 | Request price
Not quite ready to buy yet?

DENARASE® - Your complete toolkit for DNA removal
Pick the most efficient DENARASE® version for your application.

The One-for-all Serratia marcescens ELISA Kit!
For the quantification of residual Serratia marcescens endonucleases including DENARASE® High Salt.
Development of DENARASE®
2025
Launch of the DENARASE® High Salt GMP-Grade
Following the introduction of the R&D grade in March 2024, DENARASE® High Salt is now also available as GMP-grade. Manufactured under EU GMP conditions, this quality grade ensures compliance with the highest regulatory standards. With its enhanced activity across a broad spectrum of salt concentrations, DENARASE® High Salt GMP grade meets stringent quality requirements and offers maximal flexibility for clinical and commercial stage processes that benefit from elevated salt conditions.

2024
Launch of DENARASE® High Salt
c-LEcta launched DENARASE® High Salt, an engineered version of its top-selling product DENARASE®.
The newest addition to the DENARASE® portfolio has been especially designed to retain activity at higher salt concentrations and a broad pH spectrum. These features provide customers with greater process flexibility and increased cost efficiency in viral vector manufacturing processes that benefit from elevated salt levels.

2023
New sizes of R&D-grade DENARASE® available
c-LEcta has just launched additional sizes of DENARASE® for research and development use.
Being widely applied in biopharmaceutical R&D and manufacturing, DENARASE sizes of 1 MU and 5 MU will now also be available as R&D-grade, in addition to GMP-grade.

2022
Global application of DENARASE® and ELISA Kit in biopharmaceutical manufacturing
DENARASE® and ELISA Kit are established highest-quality products, applied in the manufacturing of viral vectors for Gene therapies and vaccines:
> 150 customers in > 30 countries
DENARASE® is applied in 4 Commercial and 40+ Clinical Phase I-III viral vector manufacturing processes

2021
Drug Master File for DENARASE® accepted by FDA
Dedicated regulatory support for US-market approvals of pharmaceutical products via own US FDA Drug Master File.
In addition, certified compliance with the EXCiPACT and ANSI NSF 363 Standard (meeting GMP for pharmaceutical excipients)

2020
COVID-Support
Focused support for customers developing and manufacturing COVID-19 vaccines at unprecedented speed
Concerted efforts of c-LEcta teams with COVID-19 vaccine customers succeeded in the delivery of large, unplanned quantities of DENARASE on short timelines
c-LEcta’s resilient manufacturing and distribution network kept COVID-19 related supply issues to general customers at an absolute minimum

2020
Launch of DENARASE® ELISA Kit
Launch of own ELISA kit for the detection of S. marcescens endonucleases in process-derived samples
Fastest and most sensitive ELISA kit available on the market

2017
First DENARASE®-related patents granted
Patents were successfully granted for the production technology of DENARASE® based on recombinant expression in Bacillus

2012
Product launch of DENARASE®
DENARASE® fulfills highest quality standards for biopharmaceutical manufacturing
Starting to build a global sales and distribution network for life science customers
Growth of internal quality, production, distribution and sales functions

2012
Manufacturing of DENARASE® under GMP conditions
Requirements of the biopharmaceutical industry for a GMP product were identified
Partnering with a contract manufacturing organization (CMO) to produce DENARASE® under EU GMP conditions
Manufacturing process free of animal derived raw materials and antibiotics was established

2009-2012
Start of DENARASE® project: Strain selection, development of upstream and purification process
Project started: Application of endonucleases for DNA removal during protein purification
c-LEcta‘s Bacillus strain, an endotoxin-free expression host, yielded highly active DENARASE product. Purity of ≥99 % was achieved after purification.

Get in touch with our DENARASE® expert team!

Vaishnavi Devarakonda
DENARASE® Sales

Melissa Rangel
DENARASE® Sales
Need support? Contact me!

Sedef Ozyurek
DENARASE® Sales
Need support? Contact me!