Roche Applied Science Genome Sequencer FLX System

454 GS FLX is a high-throughput next-generation DNA sequencer developed by 454 Life Sciences and launched in 2007. This instrument utilises pyrosequencing technology to deliver rapid and accurate sequencing of entire genomes, making it a valuable tool in various biotechnology applications.

Key features include:

• Long read lengths: Achieves average read lengths between 200–300 base pairs, enhancing the assembly of complex genomes.
• High throughput: Generates over 400,000 reads per run, producing approximately 100 megabases of data in less than eight hours.
• Exceptional accuracy: Offers single-read accuracy greater than 99.5% over 200 bases and consensus accuracy exceeding 99.99%.

This sequencer is widely applied in:

• De novo whole genome sequencing: Facilitates the assembly of previously unsequenced genomes.
• Resequencing: Enables the identification of genetic variations by comparing sequences to reference genomes.
• Metagenomics: Allows comprehensive analysis of microbial communities in environmental samples.
• Transcriptome analysis: Supports the study of gene expression and regulation through RNA sequencing.

Commonly utilised in university laboratories, biomedical research centres, and biotechnology companies, the 454 GS FLX has been instrumental in advancing fields such as molecular biology, genomics, and synthetic biology. Notably, it played a pivotal role in sequencing the Neanderthal genome, providing significant insights into human evolution.

While the 454 GS FLX was phased out by Roche in 2016, its legacy continues to influence current sequencing technologies and methodologies in the biotechnology industry.