Custom gene synthesis services

A gene synthesis service enables researchers to order custom-designed DNA sequences that are built from scratch to match specific experimental goals. Rather than starting from an existing biological sample, the sequence is digitally designed, optimized if needed, and then chemically synthesized to create a ready-to-use gene construct. This approach saves time, reduces technical constraints, and gives scientists more flexibility when they need precise control over sequence composition. Gene synthesis can also include added services such as codon optimization, sequence redesign, mutagenesis, fragment assembly, and cloning into a selected vector. In practical terms, it helps accelerate projects in protein expression, antibody discovery, vaccine development, cell engineering, assay development, and many other research applications. By outsourcing this step to a specialized provider, researchers gain access to a reliable, scalable solution that supports both routine constructs and more complex designs while reducing the burden on their internal teams. It is therefore both a technical service and a strategic shortcut for faster research execution.

Gene synthesis pricing generally starts at €0.14 per base pair for standard projects, but the final cost depends on several technical and logistical factors. Gene length is one of the main pricing drivers, since longer constructs require more material, more assembly work, and more extensive quality control. Sequence complexity also plays a major role. For example, regions with extreme GC content, strong repeats, secondary structure risks, or difficult motifs may require additional design work and adapted synthesis strategies, which can increase pricing. Optional services such as codon optimization, subcloning, mutagenesis, sequence verification, plasmid preparation, or expedited turnaround can also affect the total budget. In many cases, the most efficient way to estimate cost is to request a quote based on the exact sequence and project specifications. This ensures pricing reflects the real technical scope of the project rather than a simplified starting rate alone. Transparent review at the quoting stage also helps avoid surprises later in development.

Standard gene synthesis is delivered in 7 to 16 business days, depending on sequence complexity. Straightforward constructs are typically ready in 7 business days. Sequences with high GC content, repeats, or complex design requirements may need up to 16 business days. For time-sensitive programs, express delivery in under 7 business days is available for eligible sequences — contact us to confirm feasibility before ordering.

Yes. Difficult sequences are a routine part of advanced gene synthesis work, and experienced teams regularly handle constructs that fall outside standard design parameters. This includes genes with very high or very low GC content, repetitive regions, unstable motifs, homopolymers, secondary structure issues, toxic elements, mutagenized variants, and longer or highly engineered constructs. Instead of applying a one-size-fits-all process, complex sequences are usually reviewed individually so the design and synthesis strategy can be adapted to their specific constraints. That may involve sequence optimization, fragmentation strategies, specialized assembly plans, or adjusted cloning approaches to improve manufacturability while preserving the intended function. This is particularly valuable for research programs involving engineered proteins, pathway optimization, challenging expression systems, or sequence variants that are not readily available elsewhere. A strong gene synthesis partner does not simply reject complex designs; they assess feasibility carefully and work toward practical solutions that maximize the chances of project success. This makes custom synthesis especially useful for ambitious or highly tailored R&D programs.

Yes. Codon optimization is typically included at no extra cost and is an important part of improving the expression potential of a synthetic gene. Although multiple DNA codons can encode the same amino acid, different host organisms do not use these codons with the same frequency. Optimizing a coding sequence for the intended expression host can therefore help improve translation efficiency, overall yield, and experimental consistency. A robust optimization strategy goes beyond simple codon replacement. It also considers factors such as GC balance, unwanted motifs, repetitive regions, RNA structure, cryptic splice sites, restriction sites, and other sequence features that may affect synthesis, cloning, or expression. The goal is to design a sequence that is both biologically relevant and technically manufacturable. Whether the target host is bacterial, mammalian, yeast, or another system, codon optimization helps align the sequence with project needs while taking into account host-specific preferences and synthesis constraints. It is one of the clearest ways to improve performance before any wet-lab work even begins.

Yes. In addition to standard delivery vectors, gene synthesis projects can often be cloned into a customer-provided vector when a specific downstream workflow requires it. This is especially useful when researchers already have an established expression, screening, or functional assay system built around a preferred backbone. Using a custom vector can save time in later project stages by reducing the need for additional subcloning and ensuring compatibility with existing platforms, promoters, selection markers, or expression formats. Before starting, the vector is usually reviewed to confirm its suitability, including its map, cloning sites, sequence integrity, and any technical constraints that could affect the project. This collaborative approach gives researchers more flexibility and helps align the final construct with their internal processes. Whether the goal is rapid expression testing, stable cell line development, protein production, or assay setup, cloning into a customer-supplied vector can be a practical way to streamline research and keep the project moving efficiently. It also helps ensure the final material is immediately usable in the customer’s preferred system.