Twist Bioscience launches complex gene synthesis service – Image for illustrative purposes only (Image credits: Unsplash)
Twist Bioscience Corporation introduced its Complex Genes service, a significant advancement in synthetic DNA production that targets sequences previously challenging to manufacture at scale. The new offering supports lengths up to 7,000 base pairs and handles structural complexities common in advanced research applications.[1][2] Researchers now gain access to high-fidelity genes for nucleic acid therapeutics and AI-generated designs without needing to modify sequences for manufacturability.
Handling the Toughest DNA Challenges
The Complex Genes service stands out for its ability to synthesize intricate DNA structures. It accommodates short tandem repeats, inverted repeats, long repeats, homopolymers stretching up to 30 base pairs, and regions with extreme high or low GC content.[1] These elements often appear in promoters, untranslated regions, inverted terminal repeats, secondary structures, and glycine-serine linkers.
Twist anticipates accepting roughly 99.5 percent of clonal gene orders and 99.9 percent of all DNA products through this service. Customers receive complexity and manufacturability scores right during the ordering process, providing transparency on feasibility. Delivery occurs within 15 business days for constructs ranging from 300 to 7,000 base pairs, with cloning available in catalog or customer-selected vectors.[1]
Expansion Builds on Proven Platform
This launch expands Twist’s clonal genes portfolio to encompass long and complex sequences, enhancing capabilities for intricate DNA constructs. The company leverages its silicon-based DNA synthesis platform, combined with refined downstream manufacturing, automation, and sequencing processes.[3][2] This technology enables parallel production of thousands of genes per chip while maintaining precision and low error rates.
Previously, complex sequences – those with repetitive elements, extreme GC content between 25 and 65 percent, or homopolymers – received special handling but often excluded from faster express options. Standard clonal genes topped out at 5,000 base pairs with average turnaround of 10 business days, while express versions offered 4-7 days for simpler designs.[3][4] The new service pushes boundaries further without compromising quality, as all clonal products undergo NGS verification.
Key Applications in Cutting-Edge Research
Researchers in nucleic acid therapeutics and AI-enabled drug discovery stand to benefit most. The service allows direct production of AI-designed protein variants, including those for toxins or viral elements, preserving original sequences critical for experimentation.[1] This eliminates workarounds that could alter functional outcomes.
- Support for advanced regulatory elements in gene therapy vectors.
- Production of engineered sequences for high-throughput screening.
- Scalable synthesis for academic and industrial workflows in healthcare, agriculture, and beyond.
Twist’s platform also emphasizes sustainability, generating fewer CO2 emissions than traditional methods. Pricing remains competitive, starting at 9 cents per base pair for clonal genes with no hidden complexity fees.[3]
Streamlining Workflows with Customization
Orders integrate seamlessly via Twist’s e-commerce portal, where an algorithm instantly evaluates sequence viability. Options include various prep scales from 50 nanograms to 1 milligram, animal-origin-free preparations, transfection-grade formats, and delivery in tubes or plates.[5] No minimum or maximum order sizes apply, accommodating projects from single genes to libraries.
Gene fragments complement the clonal service, offering linear DNA from 300 base pairs at 7 cents per base with 2-4 day shipping. Codon optimization further boosts success by mitigating issues like rare codons or hairpins.[3]
As synthetic biology accelerates, Twist Bioscience’s Complex Genes service removes longstanding barriers in DNA manufacturing. This move not only equips scientists with tools for ambitious designs but also underscores the maturing power of silicon-driven synthesis in driving discoveries forward.
