If you’ve been following thus far, we’ve covered sequencing by pyrophosphate detection, sequencing by reversible terminators, and now we have sequencing by ligation. Note that the term ‘sequencing by synthesis’ is not used here (although Illumina likes to use the term and names some of their reagents ‘SBS’ accordingly) as […]
As mentioned previously, there are three main methods of sequencing, the first being the pyrophosphate detection approach, and here is the second (and most popular) approach, using reversible terminators. Given a set of amplified template molecules (remember there are millions to many hundreds of millions of these discrete ‘clusters’ of […]
After preparation of the library (and careful quantitation) and preparation of the amplified template comes the main event: the sequencing itself. While there are several methods available, the methods can be divided into three broad divisions. The three divisions are (firstly) Pyrophosphate Release (named for the original patent by Mostafa […]
After a library is properly prepared, (remember it can be from many sources – randomly sheared genomic DNA, cDNA from a small RNA sample, an immunoprecipitated sample) the library molecules need to be amplified in some manner, before the sequencing takes place. Thus there is a critical need for accurate […]
Looking at sequencing from one perspective, library preparation is straightforward. Sequencing a genome (whether bacterial on the order of 5 million bases or a human at 3 billion bases) is a shotgun-based affair with tens of millions to tens of billions of reads that overlap multiple times across the genome […]
As I mentioned in my prior post, Sanger capillary sequencing is not going away anytime soon. Yet next-generation sequencing has made a huge mark in the world – growing from zero in 2005 to a USD $1 Billion market in 2012. And its growth is estimated by various sources to […]
Even though the history of next-generation sequencing is short (the 454 GS20 came out in 2005, the Solexa 1G in 2007, and the SOLiD 2 in 2008), there is a robust genomic revolution going on, and a fierce battle in the marketplace with plummeting costs and soaring throughput. Whether Moore’s […]
We’re on the verge of a new era in education. This week, the Smithsonian Museum announced a new genomics exhibit at the National History Museum, in conjunction with the National Human Genome Research Institute (NHGRI), and generous grants from several companies and institutions, including a major contribution from Life Technologies […]
An enterprising salesperson from Complete Genomics used this newfangled social media thing called LinkedIn to make her mark on the world (perhaps) by posing a discussion question. (It was over at the ‘Genome Interpretation‘ group in case you were wondering.) Entitled, “The last days of exome sequencing“, she posed the […]
We’re living through a time this year of market transition. The Illumina HiSeq continues to have a strong market position (although the upcoming Ion Torrent Proton sets out to change that, however it won’t be available until this September / October). For the time being, customers with NGS platforms are […]
Yesterday was a good day. Baylor and Life Technologies announce that the upcoming Ion Torrent Proton sequencer has been installed at the Baylor College of Medicine’s Human Genome Sequencing Center. (For those of you who may have missed it, this was announced at the Consumer Electronics Show in Las Vegas […]
In the roads I travel (and it is now over six years since I made that fateful move from being an ‘internal’ Product Manager to ‘customer-facing’ sales representative) the buying process is all about perceptions of the customer. Right or wrong, potential customers each receive the information from a local […]
