Twist Bioscience HQ
681 Gateway Blvd
South San Francisco, CA 94080
Get reliable NGS results from your most difficult samples, including formalin-fixed, paraffin-embedded (FFPE) and low-input DNA. The Twist Library Preparation Kit for Enzymatic Fragmentation (EF) features a single-tube enzymatic fragmentation workflow and the high-fidelity Equinox Library Prep Amp Mix to ensure high efficiency and low error rates. The streamlined and automation-ready design minimizes hands-on time, allowing you to increase lab throughput and productivity without sacrificing data quality.
Generate amplified, sequencer-ready libraries in 3 hours. Reduce hands-on time and simplify the path from sample to data.
Achieve high-yield amplification even from minimal or degraded DNA. Maintain high efficiency across input amounts with uniform coverage for GC-rich targets.
Confidently identify rare sequences with high uniformity and low chimera rates. Minimize technical artifacts to improve data resolution.
The on-target rate for the Twist EF 2.0 Library Prep Kit is equivalent to the on-target rate achieved with the Twist EF 1.0 Library Prep Kit. Aquí se muestra una comparación de la fracción de activaciones en el objetivo en distintas condiciones de hibridación.
El enriquecimiento del objetivo se realizó con el panel de exoma nuclear Twist y el sistema de adaptador universal Twist. La secuenciación se realizó en plataformas NextSeq® 550 o 2000. Se submuestrearon los datos a 150x el tamaño del objetivo y se analizaron mediante las métricas de Picard. Las barras de error representan la desviación estándar entre réplicas.
During library preparation, minimizing inappropriate DNA ligation or recombination reduces chimera-derived sequencing errors. The upgraded Twist EF 2.0 Library Prep Kit provides a significantly decreased fraction of chimera reads, shown here against the Twist EF 1.0 Library Prep Kit. It also shows equivalent chimera rates compared to library preparation with mechanical fragmentation.
NGS libraries were generated with the Twist EF 1.0 Library Prep Kit, Twist EF 2.0 Library Prep Kit, or Twist Mechanical Fragmentation Library Prep Kit. El enriquecimiento del objetivo se realizó con el panel de exoma nuclear Twist y el sistema de adaptador universal Twist. La secuenciación se realizó en una plataforma NextSeq® 2000. Se submuestrearon los datos a 150x el tamaño del objetivo y se comunicó la métrica Picard PCT_CHIMERAS. Las barras de error representan la desviación estándar entre réplicas.
El rendimiento repetible garantiza la confianza en los resultados. When experimental conditions are held constant, the Twist EF 2.0 Library Prep Kit produces a robust, consistent DNA library fragment size. Aquí se muestran 8 electroferogramas diferentes de bibliotecas de secuenciación de última generación (NGS) generadas con el kit. La superposición de las curvas fluorescente demuestra la coherencia en la preparación de bibliotecas que puede alcanzarse de un ciclo a otro.
NGS libraries were generated with the Twist EF 2.0 Library Prep Kit and Twist's Universal Adapter system. 50 ng of high-quality gDNA was fragmented for 20 minutes at 37°C. 6 cycles of PCR were utilized for amplification. Las muestras se analizaron con el análisis Agilent DNA 7500 y los resultados se superpusieron en el software Expert 2100.
With the Twist EF 2.0 Library Prep Kit, DNA library fragment size can be tuned to your specific needs by simply adjusting fragmentation time.
Aquí se muestran los cuatro electroferogramas de las bibliotecas de NGS generadas con distintos tiempos de fragmentación. NGS libraries were generated with the Twist EF 2.0 Library Prep Kit and Twist's Universal Adapter System. 50 ng of high-quality gDNA was fragmented for various times at 37°C. 6 cycles of PCR were utilized for amplification. Samples were analyzed with an Agilent DNA 7500 assay, and results were overlaid in Expert 2100 software.
Los errores durante la amplificación son inevitables, pero no tienen que ser comunes. The upgraded Twist EF 2.0 Library Prep Kit includes the Equinox Master Mix, featuring a high-fidelity hot-start enzyme. En comparación con la polimerasa previamente recomendada y de uso común, la mezcla maestra Equinox demuestra una tasa de error menor con menos bases mal incorporadas. Esto supone una amplificación más precisa y, en última instancia, datos de secuenciación fiables.
Los casos de bases mal incorporadas en numerosas parejas de bases mal emparejadas se midieron con un análisis patentado basado en la NGS. Los valores presentados representan una tasa de error media de todos los casos de incorporaciones incorrectas.
EF 1.0
EF 2.0
Amplificación
Equinox Library Amp Mix
Equinox Library Amp Mix
Tasa de error
Estándar
Lower (improved)
Low-input efficiency
Estándar
High efficiency at low volumes (improved)
Tasa de quimeras
Higher
Lower (improved)
On-target rate
Higher
Equivalent
Run-to-run consistency
Estándar
Robust, reproducible fragement size (improved)
Reaction format
Multi-step
Single-tube prep (improved)
Library prep time
2-2.5 hours
2-2.5 hours
Fragement size tunability
Sí
Yes (adjust fragmentation time)
GC content tolerance
Estándar
20-80%
DNA input range
10–1000 ng
1–500 ng
Adapter compatibility
Full-length or universal adapters
Full-length or universal adapters
Stay updated
Amplificación
Equinox Library Amp Mix
Tasa de error
Estándar
Low-input efficiency
Estándar
Tasa de quimeras
Higher
On-target rate
Higher
Run-to-run consistency
Estándar
Reaction format
Multi-step
Library prep time
2-2.5 hours
Fragement size tunability
Sí
GC content tolerance
Estándar
DNA input range
10–1000 ng
Adapter compatibility
Full-length or universal adapters
Amplificación
Equinox Library Amp Mix
Tasa de error
Lower (improved)
Low-input efficiency
High efficiency at low volumes (improved)
Tasa de quimeras
Lower (improved)
On-target rate
Equivalent
Run-to-run consistency
Robust, reproducible fragement size (improved)
Reaction format
Single-tube prep (improved)
Library prep time
2-2.5 hours
Fragement size tunability
Yes (adjust fragmentation time)
GC content tolerance
20-80%
DNA input range
1–500 ng
Adapter compatibility
Full-length or universal adapters