Kerry (formerly c-LEcta) Verified partner
Kerry (formerly c-LEcta) develops and manufactures enzymes and microbial production strains for regulated markets at the Kerry Biotechnology Centre in Leipzig, Germany. The business was founded as c-LEcta GmbH in 2004, joined Kerry Group in 2022, and is now being brought fully under the Kerry brand; c-LEcta GmbH remains the legal manufacturing entity. Its portfolio is built specifically for biopharmaceutical downstream processing.
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Its Denarase® endonucleases hydrolyse phosphodiester bonds in all forms of nucleic acid — single- and double-stranded, linear, circular and supercoiled DNA and RNA — down to fragments of roughly 3–5 base pairs. In viral vector and vaccine manufacturing this reduces lysate viscosity, clears host cell DNA, and simplifies the purification steps that follow.
Two variants cover the full process window. The standard Denarase®, referred to by the manufacturer as the wild-type variant, performs best at low to physiological salt (0–150 mM) and remains the more economical option there. Denarase® High Salt is engineered to retain activity from 0 to 500 mM, enabling salt-supplemented lysis conditions that can improve viral vector recovery.
Both variants are produced without raw materials of animal origin, without materials carrying a TSE/BSE risk and without antibiotics, in a gram-positive Bacillus sp. host that removes the endotoxin risk inherent to gram-negative expression systems. Within each product, R&D and GMP grades carry identical release specifications, and regulatory support documentation is available on request.
BioHippo is Kerry's authorized US distributor, supplying the Denarase® portfolio, the companion ELISA kit, and CellTrypase from US-facing stock — R&D grade ships from US inventory in 2–3 business days.
What makes Kerry (formerly c-LEcta) different
Full salt-spectrum DNA clearance
Standard Denarase® at 0–150 mM and Denarase® High Salt at 0–500 mM, both across pH 7.4–9. High activity on single- and double-stranded, linear, circular and supercoiled DNA and RNA, cleaving to fragments of around 3–5 base pairs. Magnesium is an essential cofactor: the optimum is 1–2 mM Mg2+ for standard Denarase®, while Denarase® High Salt is run at 5 mM MgCl2 as standard and gains activity up to 25 mM. Temperature optimum 37 °C.
Matched R&D and GMP grades
Within each product, both grades are released against the same specification: activity above 250 U/µL, purity ≥ 99% for standard Denarase® and ≥ 98% for Denarase® High Salt, specific activity above 6 × 10⁵ U/mg for standard Denarase® and at least 4 × 10⁵ U/mg for Denarase® High Salt, and endotoxin below 0.25 EU/kU. R&D grade is produced under ISO 9001; GMP grade under EU GMP.
Built for regulated manufacturing
Produced without antibiotics, without raw materials of animal origin and without materials carrying a TSE/BSE risk. Gram-positive Bacillus sp. expression host. Supplied in non-pyrogenic, USP Class VI compliant vials under tamper-evident secondary packaging. Validation Guide, qualification guidance and change-control documentation available on request.
Where they're strong
Kerry (formerly c-LEcta) enzymes support downstream bioprocessing, viral vector and vaccine manufacturing, and residual-impurity quality control
Product lines & services
Four Kerry (formerly c-LEcta) products available from BioHippo in the United States, spanning nucleic acid clearance, clearance validation, and animal origin-free cell dissociation

Kerry Enzymes
Denarase® nucleases for host-cell DNA clearance, the Serratia marcescens ELISA kit, and CellTrypase for animal origin-free cell dissociation...

Denarase® toolkit — Enzymatic DNA Removal in Bioprocessing
Denarase® is a Serratia marcescens-derived endonuclease from Kerry (formerly c-LEcta), engineered for efficient nucleic acid clearance across GMP...
Services
Hot products

Denarase® — Precision Nuclease for Cleaner Bioprocessing

Denarase® High Salt – Salt-Tolerant Nuclease for High-Efficiency DNA Removal

Denarase® ELISA Kit — The One-for-All Serratia marcescens ELISA Kit

CellTrypase – Recombinant Trypsin-Like Enzyme for Cell Dissociation
Promotions from Kerry (formerly c-LEcta)

Denarase® Endonuclease — 10% Off One Order
R&D-grade endonuclease from Kerry (formerly c-LEcta), engineered for efficient nucleic acid removal in viral vector manufacturing, vaccine production, and downstream bioprocessing. ≥98%...
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Free 25 kU Sample — Denarase® & Denarase® High Salt
Request a complimentary 25 kU sample of Denarase® or Denarase® High Salt from Kerry (formerly c-LEcta) and benchmark nucleic acid clearance in...
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Quality control & documentation
Every batch is released against a fixed specification, with the documentation qualification teams require
Lead time & shipping
R&D-grade enzyme is held in US stock. GMP grade is held at the manufacturer. Enzymes ship cold-chain; CellTrypase ships ambient.
Request a quote from Kerry (formerly c-LEcta)
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