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The complex sequences you need, now directly synthesized up to 900 bp.
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Introducing 50 kb DNA Synthesis
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DNA Synthesis for the AI Era
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EXPECT MORE FROM YOUR DNA

At Ansa, you don’t have to design your project around what DNA vendors can or can’t build. You can design the biology you actually want—and get it synthesized the first time. Our enzymatic DNA synthesis platform removes the constraints of assembly-based methods, enabling direct synthesis of complex sequences up to 900 bp and seamless delivery of constructs up to 50 kb.

WHAT THAT MEANS:

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You can move from sequence design to functional construct without redesign cycles caused by repeats, GC-rich regions, or unstable elements.

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You can order full-length genes and large constructs as designed—without fragmenting, reassembling, or troubleshooting failures across multiple vendors.

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You can confidently incorporate difficult features like regulatory elements, homology arms, or repetitive domains that are often rejected or modified elsewhere.

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When your DNA arrives exactly as designed, your team spends less time troubleshooting and more time generating data that moves your program forward.

What Our Customers Say

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For the first time in my career, synthesis is no longer the bottleneck in my science.

Colin Harvey, PhD

Co-founder, VP of Early Discovery
Hexagon Bio

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Our experience with Ansa Biotechnologies has been excellent. The company successfully delivered a set of complex, repetitive sequences up to 41 kb that several other companies had declined to synthesize, all in about half the time of current industry standards. The Ansa team is responsive, easy to work with, and consistently follows through.

George Church, PhD

Professor, Harvard Medical School and Massachusetts Institute of Technology

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Ansa has been a consistent, responsive, and reliable partner who Terrain has utilized to great effect to deliver us highly complex DNA constructs that enable us to build complex and long mRNA sequences. Our partnership with Ansa, and in particular their 7.5kb - 50kb clonal gene offering enables us to push the limits of mRNA design and manufacturing. It has been a pleasure working with Ansa and it always feels like a true partnership.

Aaron Larsen, PhD

Chief Scientific Officer, Terrain Bio

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Ansa has provided us with extremely long and complex constructs we couldn't get anywhere else. For these types of sequences, as long as 50 kb, other providers often reject or quote an extremely long ETA. Without Ansa, we couldn't obtain them so efficiently, affordably, and reliably - or at all!

Molly Gasperini, PhD

Associate Director of Genome Engineering
Allen Institute’s Seattle Hub for Synthetic Biology

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The CRISPR arrays worked like a charm. The cloning into the destination vectors to create the CRISPR/Cas9 system for tomato transformation took less than 7 days (as opposed to 3-4 months).

Daniel Rodriguez Leal, PhD

Assistant Professor
University of Maryland, College Park

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Reshaping Biology

Learn how Ansa’s groundbreaking DNA synthesis technology empowers scientists to achieve the next wave of scientific breakthroughs and shape the future of biology.

Gene and Cell Therapies
Progress lead candidates without delays caused by synthesis failures or sequence compromises.

Antibody Discovery
Build diverse libraries and variant panels without losing critical sequence complexity.

CDMOs
Deliver on timelines and customer expectations without the unpredictability of outsourced DNA assembly workflows.

Agrigenomics
Design and test large, complex traits without being limited by sequence constraints.

Start Unlocking Breakthroughs

Move your research forward by letting us synthesize the complex sequences you need.