IMGM Laboratories has worked collaboratively with Roche over the last year to optimize long read sequencing results of 16S rRNA libraries on the 454 GS FLX+ system. As an early access customer of the latest software (Version 2.9), IMGM sequenced and analyzed multiple 16S amplicon libraries ranging from 650 – 1,050 bp. The sequencing results showed increased performance, with modal read lengths ranging from 590 to 999bp respectively.
In applications like 16S metagenomics, longer read lengths directly translate into increased biological information content. Extended amplicon read lengths on the GS FLX+ system allow coverage of up to 6 variable regions of the 16S rRNA gene in a single read for more precise taxonomic assignment of organisms in complex microbial community profiling studies.
“During our cooperation with Roche 454 over the last year we had seen a steady improvement, but also had to recognize some limitations of the existing software for amplicon sequencing”, said Dr. Ralph Oehlmann, Director Business Development at IMGM Laboratories. “Seeing the latest v2.9 software test results, I am extremely excited about the marked improvement in system performance and particularly with the long read lengths attained.”